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Page last updated
9 August
2018

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The Freshwater Mussels (Unionoida) of the World
(and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the search fields. Either way, you win!

Taxa known only as fossils are highlighted in gray. Those without representatives in fresh waters are highlighted in gold.

 

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Publication Information

Frierson, L.S. 1927. A Classified and Annotated Check List of the North American Naiades: 111 pp.
Availably electronically? yes.

Species Described
Anodonta jewittiana Simpson, 1900.
‘Lea’ Of Authors.
Simpson, 1900, Proc. U.S. Nat. Mus.: 927.
Frierson, 1927, Check List N. Amer. Naiades: 97.
(error for Anodonta jewettiana Lea, 1868)
= Anodontites trapesialis
 
Anodonta jewittii Simpson, 1900.
‘Lea’ Of Authors.
Simpson, 1900, Proc. U.S. Nat. Mus.: 927.
Frierson, 1927, Check List N. Amer. Naiades: 97.
‘Lea’ Haas, 1931, Senckenbergiana: 99.
(error for Anodonta jewettii Lea, 1868)
= Anodontites trapesialis
 
Anodonta linneana Conrad, 1853.
‘Lea’ Of Authors.
Conrad, 1853, Proc. Acad. Nat. Sci.: 264.
Hanley, 1856, Cat. Rec. Bivalve Shells, Suppl.: 387.
Sowerby, 1870, Conch. Icon.: pl. 35, sp. 144.
Simpson, 1900, Proc. U.S. Nat. Mus.: 646.
Simpson, 1914, Descr. Cat. Naiades: 431.
Frierson, 1927, Check List N. Amer. Naiades: 14.
Haas, 1969, Das Tierreich: 364.
Parmalee & Bogan, 1998, The Freshwater Mussels of Tennessee: 206.
Watters et al., 2009, Freshw. Mussels OH: 260.
(error for Anodonta linnaeana Lea, 1852)
= Pyganodon grandis
 
Anodonta nuttaliana Hanley, 1843.
‘Lea’ Of Authors.
Hanley, 1843, Illustr. Descr. Cat. Rec. Bivalve Shells: 216.
Frierson, 1927, Check List N. Amer. Naiades: 14.
Turgeon et al., 1988, Am. Fisher. Soc. Spec. Publ.: 28.
Williams et al., 1993, Fisheries: 10.
(error for Anodonta nuttalliana Lea, 1838)
= Anodonta nuttalliana
 
Anodonta pennsylvanica Stark, 1828.
‘Lamarck’ Of Authors.
Stark, 1828, Elements Nat. Hist.: 89.
Lea, 1836, Synopsis Fam. Naiades: 50.
Lea, 1852, Synopsis Fam. Naiades: 49.
Conrad, 1853, Proc. Acad. Nat. Sci.: 263.
Sowerby, 1867, Conch. Icon.: pl. 11, sp. 30.
Lea, 1870, Synopsis Fam. Naiades: 79.
Simpson, 1900, Proc. U.S. Nat. Mus.: 618.
Ortmann & Walker, 1922, Occ. Pap. Mus. Zool. Univ. Mich.: 40.
Frierson, 1927, Check List N. Amer. Naiades: 22 [as ‘Strophitus undulatus-pennsylvanicus’].
Haas, 1969, Das Tierreich: 373 [as ‘Strophitus undulatus pennsylvanicus’].
(error for Anodonta pensylvanica Lamarck, 1819)
= Strophitus undulatus
 
Anodonta salmonea Sowerby, 1867.
‘Lea’ Of Authors.
Sowerby, 1867, Conch. Icon.: pl. 19, sp. 74.
Frierson, 1927, Check List N. Amer. Naiades: 15.
F.C. Baker, 1928, Bull. Wisconsin Geol. Nat. Hist. Survey: 155.
(error for Anodonta salmonia Lea, 1838)
= Pyganodon grandis
 
Anodonta shafferiana Lea, 1870.
‘Lea’ Of Authors.
Lea, 1870, Synopsis Fam. Naiades: 81.
Clessin, 1873, Conchyl. Cab.: 243, pl. 17, figs. 5-7.
B.H. Wright, 1888, Check List: unnumbered p. 7.
Call, 1895, Trans. Acad. Sci. St. Louis: 60.
Utterback, 1916, Amer. Midl. Nat.: 311.
Frierson, 1927, Check List N. Amer. Naiades: 23.
(error for Anodonta shaefferiana Lea, 1852)
= Strophitus undulatus
 
Anodontites schombergianus Frierson, 1927.
‘Sowerby’ Of Authors.
Frierson, 1927, Check List N. Amer. Naiades: 97.
Martinez et al., 2004, Mem. Fund. La Salle Cienc. Nat.: 294.
Lasso et al., 2009, Biota Colombiana: 72.
(error for Anodon schomburgianus Sowerby, 1870)
= Anodontites schomburgianus
 
Elliptio cylindraceus Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 29, sp. 87.
(new name for Unio lugubris Lea, 1838)
= Elliptio icterina
 
Elliptio rugolosus Frierson, 1927.
‘Küster’ Frierson, 1927, Check List N. Amer. Naiades: 35.
(error for Unio rugulosus Küster, 1856)
= Nephronaias rugulosa
 
Elliptio (Nephritica) haricotti Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 38, sp. 150.
Frierson, 1928, Nautilus: 139, pl. 3, fig. 4.
Type(s): SYNTYPE UMMZ_97047, Guatemala.
= Nephritica haricotti
 
Elliptio (Nephronaias) guatemalensis Frierson, 1927.
‘von Martens’ Frierson, 1927, Check List N. Amer. Naiades: 36.
(error for Unio guatemalanus Martens, 1900)
= Nephronaias goascoranensis
 
Elliptio (Nephronaias) sajensis Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 37, sp. 139.
Frierson, 1928, Nautilus: 139, pl. 2, fig. 2.
Type(s): SYNTYPE UMMZ_108010, Rio Saja, 5 mi W Esmeralda, Guatemala.
= Nephronaias sajensis
 
Elliptio (Sphenonaias) liebmanni cuatotolapamensis Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 37, sp. 141a.
(error for Elliptio cuatolopamensis H.B. Baker, 1922)
= Sphenonaias liebmanni
 
Elliptio tetralasmus manubius Frierson, 1927.
‘Gould’ Frierson, 1927, Check List N. Amer. Naiades: 34.
(mis-ID'd reference to Unio manubius Gould, 1855)
= Uniomerus declivis
 
Fusconaia undata trigonoides Utterback, 1915.
‘Frierson, MS’ Utterback, 1915, Amer. Midl. Nat.: 107, pl. 15, figs. 30A-D; pl. 4, figs. 9a-b.
Frierson, 1927, Check List N. Amer. Naiades: 55, sp. 232d.
(intro'd as intra-sp. of Unio undatus Barnes, 1823)
= Fusconaia flava
 
Glabaris glabrus Frierson, 1927.
‘Simpson’ Frierson, 1927, Check List N. Amer. Naiades: 13.
(intro'd as syn of Anodonta impura Say, 1829)
= Anodonta impura
 
Lampsilis arkansensis Frierson, 1927.
‘Lea’ Frierson, 1927, Check List N. Amer. Naiades: 81, sp. 355.
(error for Unio arkansasensis Lea, 1862)
= Obovaria arkansasensis
 
Lampsilis fimbriata Frierson, 1907.
Frierson, 1907, Nautilus: 86, pl. 12, two upper figs. & lower left one.
Frierson, 1927, Check List N. Amer. Naiades: 83, sp. 363.
Type(s): HOLOTYPE (ORIG. DESIG.) UMMZ_91161, Valles River, Mexico.
= Disconaias fimbriata
 
Lampsilis propia Frierson, 1927.
‘Lea’ Frierson, 1927, Check List N. Amer. Naiades: 75.
(error for Unio proprius Lea, 1865)
= Leaunio umbrans
 
Lampsilis (Actinonaias) meddellina Frierson, 1927.
‘Lea’ Frierson, 1927, Check List N. Amer. Naiades: 84.
(error for Unio medellinus Lea, 1838)
= Actinonaias medellina
 
Lampsilis (Cyrtonaias) tampicoensis kusteriana Frierson, 1927.
‘Lea’ Küster, 1862, Conchyl. Cab.: 275, pl. 93, fig. 1 [as ‘Unio tampicoënsis’].
Frierson, 1927, Check List N. Amer. Naiades: 85, sp. 383d.
(intro'd as intra-sp. of Unio tampicoensis Lea, 1838)
= Cyrtonaias tampicoensis
 
Lampsilis (Disconaias) martensi Frierson, 1927.
‘Philippi’ Martens, 1900, Biol. Centr.-Amer., Moll.: pl. 37, figs. 1-1a [as ‘Unio aztecorum’].
Frierson, 1927, Check List N. Amer. Naiades: 83, sp. 364.
= Nephronaias aztecorum
 
Lampsilis (Disconaias) novileonensis Frierson, 1927.
‘Pilsbry’ Frierson, 1927, Check List N. Amer. Naiades: 83 [as ‘novi-leonensis’].
(error for Lampsilis novileonis Pilsbry, 1910)
= Disconaias novileonis
 
Lampsilis (Disconaias) pilsbryana Frierson, 1927.
‘Say’ Frierson, 1912, Nautilus: pl. 3, fig. 4 [as ‘Lampsilis purpuriatus’].
Frierson, 1927, Check List N. Amer. Naiades: 83, sp. 368.
Type(s): HOLOTYPE UMMZ_91175, Valles River, Mecos, Mexico.
= Disconaias purpuriata
 
Lampsilis (Ligumia) nervosa Frierson, 1927.
‘Rafinesque’ Of Authors.
Frierson, 1927, Check List N. Amer. Naiades: 77, sp. 336.
Haas, 1969, Das Tierreich: 445.
(mis-ID'd reference to Unio nervosa Rafinesque, 1820)
= Cambarunio iris
 
Lampsilis (Ligumia) streckeri Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 74, sp. 321.
Frierson, 1928, Nautilus: 139, pl. 2, fig. 1.
Type(s): HOLOTYPE UMMZ_91075, Little Red R., Arkansas.
= Lampsilis streckeri
 
Lampsilis (s.s.) rafinesqueana Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 69, sp. 309.
Frierson, 1928, Nautilus: 138, pl. 1, figs. 1-2.
Type(s): SYNTYPES UMMZ_91176, Indian Creek, McDonald Co., McDonald.
= Lampsilis rafinesqueana
 
Lampsilis (s.s.) sowerbyana Frierson, 1927.
‘Lea’ Sowerby, 1868, Conch. Icon.: pl. 63, sp. 316 [as ‘Unio pictus’].
Frierson, 1927, Check List N. Amer. Naiades: 69, sp. 308.
= Ortmanniana ligamentina
 
Lampsilis (Villosa) wrightiana Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 81, sp. 351.
Frierson, 1928, Nautilus: 139, pl. 2, fig. 3.
Type(s): SYNTYPE UMMZ_91179, Volusia Co., Fla.
= Villosa amygdalum
 
Margaritana curreyana Lea, 1842.
‘Lea’ Of Authors.
Lea, 1842, Trans. Amer. Phil. Soc.: pl. 18, fig. 40.
Lea, 1852, Synopsis Fam. Naiades: 42.
Agassiz, 1852, Arch. Naturg.: 47.
Conrad, 1853, Proc. Acad. Nat. Sci.: 263.
Adams & Adams, 1857, Gen. Rec. Moll.: 499.
Sowerby, 1868, Conch. Icon.: pl. 63, sp. 319.
Lea, 1870, Synopsis Fam. Naiades: 68.
Simpson, 1900, Proc. U.S. Nat. Mus.: 661.
Simpson, 1914, Descr. Cat. Naiades: 474.
Frierson, 1927, Check List N. Amer. Naiades: 21.
Haas, 1969, Das Tierreich: 395.
(error for Margaritana curreyiana Lea, 1840)
= Pegias fabula
 
Margaritana etowahensis Simpson, 1900.
‘Conrad’ Of Authors.
Simpson, 1900, Proc. U.S. Nat. Mus.: 672.
Simpson, 1914, Descr. Cat. Naiades: 510.
Frierson, 1927, Check List N. Amer. Naiades: 19.
(error for Margaritana etowaensis Conrad, 1849)
= Lasmigona etowaensis
 
Margaron (Anodonta) marryatana Lea, 1870.
Lea, 1870, Synopsis Fam. Naiades: 82.
‘Lea’ Frierson, 1927, Check List N. Amer. Naiades: 15.
(error for Anodonta maryattana Lea, 1840)
= Pyganodon grandis
 
Obliquaria reflexa conradi Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 65, sp. 290a.
(intro'd as intra-sp. of Obliquaria reflexa Rafinesque, 1820)
Type(s): LECTOTYPE ANSP_56695, Alabama R., Ala.
= Obliquaria reflexa
 
Parreysia robsoni Frierson, 1927.
‘Lea’ Sowerby, 1866, Conch. Icon.: pl. 36, sp. 198 [as ‘Unio pumilus’].
Frierson, 1927, Check List N. Amer. Naiades: 45.
Type(s): HOLOTYPE BMNH_1965150, Loc._ ?.
= Parreysia favidens
 
Pleurobema tombigbeanum Frierson, 1908.
Frierson, 1908, Nautilus: 27, pl. 3, figs. 3-4.
Frierson, 1927, Check List N. Amer. Naiades: 42 [under P. taitianum Lea].
= Pleurobema taitianum
 
Pleurobema utterbackii Utterback, 1915.
Frierson in Utterback, 1915, Amer. Midl. Nat.: 197, pl. 5, fig. 12a-b; pl 20, figs. 63A-D.
Frierson, 1927, Check List N. Amer. Naiades: 57, sp. 247 [as ‘Q. (Fusconaia) utterbackii’].
Type(s): HOLOTYPE (ORIG. DESIG.) MCZ_271448, White R., Hollister, Taney Co., Missouri.
= Fusconaia ozarkensis
 
Pleurobema (Plethobasus) cicatricoideum Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 45, sp. 203.
(error for Unio cicatricoides Frierson, 1911)
= Plethobasus cicatricosus
 
Pleurobema (s.s.) aldrichi Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 44, sp. 197.
Frierson, 1928, Nautilus: 139, pl. 3, fig. 1.
Type(s): LECTOTYPE ANSP_145246, Selma, Ala.
= Pleurobema taitianum
 
Pleurobema (s.s.) fictum Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 43, sp. 195.
Frierson, 1928, Nautilus: 139, pl. 3, figs. 2-2a.
Type(s): HOLOTYPE UMMZ_80791, Cahaba River, Alabama.
= Pleurobema rubellum
 
Pleurobema (s.s.) marshalli Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 43, sp. 196.
Frierson, 1928, Nautilus: 139, pl. 3, fig. 3.
Type(s): FIGURED SYNTYPE UMMZ_80859, Tombigbee River, Boligee, Greene Co., Alabama.
= Pleurobema marshalli
 
Psoronaias kuxensis Frierson, 1917.
Frierson, 1917, Nautilus: 48, pl. 7, figs. 1-2.
Frierson, 1927, Check List N. Amer. Naiades: 64, sp. 282.
Type(s): LECTOTYPE ANSP_117094, Kux Creek, Chama, Guatemala.
= Psoronaias kuxensis
 
Psoronaias martensi Frierson, 1927.
Martens, 1900, Biol. Centr.-Amer., Moll.: 494, pl. 31, figs. 1-2 [as ‘Unio psoricus’].
Frierson, 1927, Check List N. Amer. Naiades: 64, sp. 279.
= Psoronaias martensi
 
Psoronaias plexoideus Frierson, 1927.
‘Lea’ Sowerby, 1868, Conch. Icon.: pl. 64, sp. 324; errata [as ‘Unio rusticus’].
Frierson, 1927, Check List N. Amer. Naiades: 63, sp. 273.
= Barynaias plexus
 
Quadrula lachrymosa Swainson, 1840.
‘Lea’ Of Authors.
Swainson, 1840, Treat. Malacol.: 378.
Hanley, 1843, Illustr. Descr. Cat. Rec. Bivalve Shells: 177.
Conrad, 1853, Proc. Acad. Nat. Sci.: 256.
Adams & Adams, 1857, Gen. Rec. Moll.: 497.
Reeve, 1864, Conch. Icon.: pl. 9, sp. 33.
Call, 1895, Trans. Acad. Sci. St. Louis: 21.
F.C. Baker, 1898, Bull. Chicago Acad. Sci.: 83, pl. 25, fig. 1; pl. 12, fig. 2.
Call, 1900, Ind. Dept. Geol. Nat. Res.: 489.
Simpson, 1900, Proc. U.S. Nat. Mus.: 776.
Ortmann, 1910, Nautilus: 140.
Ortmann, 1910, Nautilus: 116.
Ortmann, 1912, Ann. Carnegie Mus.: 253.
Simpson, 1914, Descr. Cat. Naiades: 839, 841.
Ortmann & Walker, 1922, Occ. Pap. Mus. Zool. Univ. Mich.: 14, 16.
Frierson, 1927, Check List N. Amer. Naiades: 47.
F.C. Baker, 1928, Bull. Wisconsin Geol. Nat. Hist. Survey: 84.
R.I. Johnson, 1980, Bull. MCZ: 90.
Vidrine, 1993, Histr. Distr. Freshw. Mussels LA: 53.
Strayer & Jirka, 1997, Pearly Mussels NY: 98.
(error for Unio lacrymosus Lea, 1828)
= Quadrula quadrula
 
Quadrula (Cyclonaias) tuberculata utterbackiana Frierson, 1927.
‘Lea’ Utterback, 1915, Amer. Midl. Nat.: 183, pl. 20, fig. 57a-b [as ‘Plethobasus cooperianus’].
Frierson, 1927, Check List N. Amer. Naiades: 52, sp. 224c.
(intro'd as intra-sp. of Obliquaria tuberculata Rafinesque, 1820)
= Cyclonaias tuberculata
 
Quadrula (Fusconaia) flava sampsoniana Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 55, sp. 235d.
(intro'd as intra-sp. of Obliquaria flava Rafinesque, 1820)
Type(s): LECTOTYPE UMMZ_92226 (selected by R.I. Johnson, 1972), Elk River, Missouri.
= Fusconaia ozarkensis
 
Quadrula (Fusconia [sic] beadleana Frierson, 1927.
‘Lea’ Of Authors.
Frierson, 1927, Check List N. Amer. Naiades: 57.
Vidrine, 1993, Histr. Distr. Freshw. Mussels LA: 63 [as ‘Pleurobema beadleanum’].
Burdick & White, 2007, J. Moll. Studies: 370 [as ‘Pleurobema beadleanum’].
Haag, 2012, N. Amer. Freshw. Mussels: 71 [as ‘Pleurobema beadleanum’].
(error for Unio beadleianus Lea, 1861)
= Pleurobema beadleianum
 
Quadrula (Pleuronaia) analogia Frierson, 1927.
‘Ortmann’ Frierson, 1927, Check List N. Amer. Naiades: 60, sp. 261.
(error for Fusconaia analoga Ortmann, 1918)
= Fusconaia cor
 
Quadrula (Pleuronaia) meridithii Frierson, 1927.
‘Lea’ Frierson, 1927, Check List N. Amer. Naiades: 58, sp. 253.
(error for Unio meredithii Lea, 1858)
= Pleuronaia barnesiana
 
Quadrula (Quincuncina) vittata Frierson, 1927.
‘Lamarck’ Reeve, 1865, Conch. Icon.: pl. 23, sp. 106 [as ‘Unio rotundatus’].
Frierson, 1927, Check List N. Amer. Naiades: 50, sp. 218.
= Glebula rotundata
 
Quadrula trapezoides var. pentagonoides Frierson, 1902.
Frierson, 1902, Nautilus: 39.
Frierson, 1927, Check List N. Amer. Naiades: 62 [as ‘A. (Plectomerus) dombeyana’].
(intro'd as intra-sp. of Unio trapezoides Lea, 1831)
Type(s): LECTOTYPE ANSP_128928 (selected by R.I. Johnson, 1972), Lake Charles, La.
= Plectomerus dombeyanus
 
Strophitus undulatus ovatus Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 22, sp. 37e.
R.I. Johnson, 1972, Occ. Pap. Moll.: 147, pl. 22, fig. 2.
(intro'd as intra-sp. of Anodonta undulata Say, 1817)
Type(s): LECTOTYPE UMMZ_113533 (selected by R.I. Johnson, 1972), Edwards River, Illinois.
= Strophitus undulatus
 
Strophitus undulatus tennesseensis Frierson, 1927.
Frierson, 1927, Check List N. Amer. Naiades: 22, sp. 37d.
(intro'd as intra-sp. of Anodonta undulata Say, 1817)
Type(s): LECTOTYPE MCZ_16690 (selected by R.I. Johnson, 1956), Duck River, Shelbyville, Rockford, Co., Tennessee.
= Strophitus undulatus
 
Unio averillii Simpson, 1900.
“Wright” Of Authors.
Simpson, 1900, Proc. U.S. Nat. Mus.: 560.
Simpson, 1914, Descr. Cat. Naiades: 138.
Frierson, 1927, Check List N. Amer. Naiades: 76.
R.I. Johnson, 1970, Bull. MCZ: 373.
R.I. Johnson, 1972, Bull. Fla. State Mus.: 237.
Burch, 1975, Freshw. Unio. North Amer.: 159.
(error for Unio averellii B.H. Wright, 1888)
= Villosa vibex
 
Unio bissellianus Lea, 1870.
‘Lea’ Of Authors.
Lea, 1870, Synopsis Fam. Naiades: 50.
Simpson, 1900, Proc. U.S. Nat. Mus.: 743.
Simpson, 1914, Descr. Cat. Naiades: 714.
Frierson, 1927, Check List N. Amer. Naiades: 35.
Haas, 1969, Das Tierreich: 210.
(error for Unio bisselianus Lea, 1867)
= Uniomerus carolinianus
 
Unio cistelliformis Simpson, 1900.
‘Lea’ Of Authors.
Simpson, 1900, Proc. U.S. Nat. Mus.: 716.
Simpson, 1914, Descr. Cat. Naiades: 641.
Frierson, 1927, Check List N. Amer. Naiades: 29.
Haas, 1969, Das Tierreich: 228.
R.I. Johnson, 1970, Bull. MCZ: 317.
Davis et al., 1981, Biol. J. Linn. Soc.: 135.
Davis, 1984, Malacologia: 631.
Williams et al., 1993, Fisheries: 11.
Haag, 2012, N. Amer. Freshw. Mussels: 73.
(error for Unio cistellaeformis Lea, 1863)
= Elliptio cistellaeformis
 
Unio detectus Frierson, 1911.
Frierson, 1911, Nautilus: 52, pls. 2 , lower fig.; pl. 3, upper fig..
Frierson, 1927, Check List N. Amer. Naiades: 45, sp. 202.
Type(s): HOLOTYPE UMMZ_81937, Ohio River.
= Plethobasus cicatricosus
 
Unio hanleyanus Conrad, 1853.
‘Lea’ Of Authors.
Conrad, 1853, Proc. Acad. Nat. Sci.: 250.
Sowerby, 1866, Conch. Icon.: pl. 46, sp. 249.
Simpson, 1900, Proc. U.S. Nat. Mus.: 759.
Simpson, 1914, Descr. Cat. Naiades: 780.
Frierson, 1927, Check List N. Amer. Naiades: 42, sp. 175.
Haas, 1969, Das Tierreich: 256.
Burch, 1975, Freshw. Unio. North Amer.: 13.
Turgeon et al., 1988, Am. Fisher. Soc. Spec. Publ.: 32.
Williams et al., 1993, Fisheries: 13.
Parmalee & Bogan, 1998, The Freshwater Mussels of Tennessee: 184.
Lydeard et al., 1999, Gulf Mex. Sci.: 129.
(error for Unio hanleyianus Lea, 1852)
= Pleurobema hanleyianum
 
Unio hippopaeus Lea, 1852.
‘Lea’ Of Authors.
Lea, 1852, Synopsis Fam. Naiades: 21 [as ‘hippopæus’].
Conrad, 1853, Proc. Acad. Nat. Sci.: 261 [as ‘hippopæus’].
Adams & Adams, 1857, Gen. Rec. Moll.: 497 [as ‘hippopæus’].
Reeve, 1864, Conch. Icon.: pl. 11, sp. 40 [as ‘hippopæus’].
Lea, 1870, Synopsis Fam. Naiades: 31 [as ‘hippopæus’].
Simpson, 1900, Proc. U.S. Nat. Mus.: 767 [as ‘hippopæa’].
Simpson, 1914, Descr. Cat. Naiades: 816 [as ‘hippopæa’].
Frierson, 1927, Check List N. Amer. Naiades: 61.
Haas, 1969, Das Tierreich: 287.
Clarke, 1973, Malacologia: 35.
Burch, 1975, Freshw. Unio. North Amer.: 165.
Strayer & Jirka, 1997, Pearly Mussels NY: 98.
He & Zhuang, 2013, Freshwater Bivalves China: 27.
(error for Unio hippopoeus Lea, 1845)
= Amblema plicata
 
Unio inusitatus Lea, 1870.
‘Lea’ Lea, 1870, Synopsis Fam. Naiades: 51.
‘Lea’ Frierson, 1927, Check List N. Amer. Naiades: 31.
(error for Unio inusitatis Lea, 1859)
= Elliptio hopetonensis
 
Unio leseurianus Conrad, 1853.
‘Lea’ Of Authors.
Conrad, 1853, Proc. Acad. Nat. Sci.: 251.
Frierson, 1927, Check List N. Amer. Naiades: 56.
(error for Unio lesueurianus Lea, 1840)
= Fusconaia subrotunda
 
Unio mellinus Paetel, 1890.
‘Conrad’ Of Authors.
Paetel, 1890, Cat. Conch.-Samml.: 159.
Frierson, 1927, Check List N. Amer. Naiades: 72, sp. 316a.
(error for Unio melinus Conrad, 1838)
= Lampsilis radiata
 
Unio mytilloides Frierson, 1927.
‘Lea, 1829’ Frierson, 1927, Check List N. Amer. Naiades: 52.
(mis-ID'd reference to Pleurobema mytiloides Rafinesque, 1820; error for Pleurobema mytiloides Rafinesque, 1820)
= Pleurobema rubrum
 
Unio mytilloides Frierson, 1927.
‘Swainson’ Frierson, 1927, Check List N. Amer. Naiades: 91.
(mis-ID'd reference to Unio mytiloides Swainson, 1840; error for Unio mytiloides Swainson, 1840)
= Obovaria olivaria
 
Unio panucoensis Martens, 1900.
‘von dem Busch’ Of Authors.
Martens, 1900, Biol. Centr.-Amer., Moll.: 510.
Pilsbry, 1910, Proc. Acad. Nat. Sci.: 533.
Simpson, 1914, Descr. Cat. Naiades: 603.
Frierson, 1927, Check List N. Amer. Naiades: 82.
(error for Unio panacoensis Philippi, 1843)
= Disconaias panacoensis
 
Unio petrinus Frierson, 1927.
‘Call (Mss)’ Frierson, 1927, Check List N. Amer. Naiades: 49.
(intro'd as syn of Unio aureus Lea, 1859)
= Cyclonaias aurea
 
Unio planilateralis Frierson, 1927.
‘Conrad’ Of Authors.
Frierson, 1927, Check List N. Amer. Naiades: 31.
Haas, 1969, Das Tierreich: 233.
(error for Unio planilateris Conrad, 1838)
= Elliptio congaraea
 
Unio reevianus Conrad, 1853.
‘Lea’ Of Authors.
Conrad, 1853, Proc. Acad. Nat. Sci.: 256.
Simpson, 1900, Proc. U.S. Nat. Mus.: 538.
Simpson, 1914, Descr. Cat. Naiades: 74.
Utterback, 1916, Amer. Midl. Nat.: 449.
Frierson, 1927, Check List N. Amer. Naiades: 73.
Haas, 1969, Das Tierreich: 437.
R.I. Johnson, 1980, Bull. MCZ: 132.
Oesch, 1984, Missouri Naiades: 225.
Turgeon et al., 1988, Am. Fisher. Soc. Spec. Publ.: 31.
Williams et al., 1993, Fisheries: 12.
Turgeon et al., 1998, Am. Fisher. Soc. Spec. Publ.: 35.
Graf & Cummings, 2007, J. Moll. Studies: 305.
Bogan, 2010, FADA: [web].
Haag, 2012, N. Amer. Freshw. Mussels: 71 [as ‘Lampsilis reeviana’].
(error for Unio reeveianus Lea, 1852)
= Lampsilis reeveiana
 
Unio ridellii Frierson, 1927.
‘Lea’ Of Authors.
Frierson, 1927, Check List N. Amer. Naiades: 54.
Haas, 1969, Das Tierreich: 300.
Pfeiffer et al., 2016, Conserv. Genet.: [3].
(error for Unio riddellii Lea, 1862)
= Pleurobema riddellii
 
Unio sowerbyanus Küster, 1852.
‘Lea’ Of Authors.
Küster, 1852, Conchyl. Cab.: 62.
Agassiz, 1852, Arch. Naturg.: 43.
Reeve, 1864, Conch. Icon.: pl. 14, sp. 58.
Simpson, 1900, Proc. U.S. Nat. Mus.: 520.
Simpson, 1914, Descr. Cat. Naiades: 17.
Frierson, 1927, Check List N. Amer. Naiades: 94.
Haas, 1969, Das Tierreich: 483.
Burch, 1975, Freshw. Unio. North Amer.: 173.
R.I. Johnson, 1978, Bull. MCZ: 280.
Parmalee & Bogan, 1998, The Freshwater Mussels of Tennessee: 91.
(error for Unio sowerbianus Lea, 1834)
= Epioblasma haysiana
 
Unio virginea Frierson, 1927.
‘Lamarck’ Frierson, 1927, Check List N. Amer. Naiades: 72.
(error for Unio virginana Reeve, 1865)
= Lampsilis radiata
 
Unio whiteanus Conrad, 1853.
‘Lea’ Of Authors.
Conrad, 1853, Proc. Acad. Nat. Sci.: 260.
Frierson, 1927, Check List N. Amer. Naiades: 28.
(error for Unio whiteianus Lea, 1852)
= Elliptio icterina
 
Unio zonata Simpson, 1900.
‘Rafinesque’ Of Authors.
Simpson, 1900, Proc. U.S. Nat. Mus.: 744.
Simpson, 1914, Descr. Cat. Naiades: 731.
Frierson, 1927, Check List N. Amer. Naiades: 90.
(error for Unio zonalis Rafinesque, 1820)
= Obovaria subrotunda
 
Unio (Lampsilis) amphichaena Frierson, 1898.
Frierson, 1898, Nautilus: 109, pl. 1.
Frierson, 1927, Check List N. Amer. Naiades: 87, sp. 395.
Type(s): HOLOTYPE USNM_159935, Sabine R., Logansport, La.
= Potamilus amphichaenus
 
Unio (Nephronaias) ortmanni Frierson, 1913.
Frierson, 1913, Nautilus: 14, pl. 2.
Frierson, 1927, Check List N. Amer. Naiades: 36 [as ‘E. (Nephronaias) sphenorhynchus Cr. & Fisch. 1893’].
Type(s): PARATYPES MCZ_20916, Conchins River, Guatemala.
= Nephronaias sphenorhyncha
 
Unio (Obovaria) jacksoniana Frierson, 1912.
Frierson, 1912, Nautilus: 23, pl. 3, figs. 1-3.
Frierson, 1927, Check List N. Amer. Naiades: 91, sp. 412.
Type(s): LECTOTYPE ANSP_106063, Pearl R., Miss.
= Obovaria arkansasensis
 
Unio (Pleurobema) hagleri Frierson, 1900.
Frierson, 1900, Nautilus: 109, pl. 2.
Frierson, 1927, Check List N. Amer. Naiades: 41, sp. 169.
Type(s): LECTOTYPE ANSP_77902, North River, nr. Tynes, Ala.
= Pleurobema rubellum
 
Unio calamitarum var. prolongus Frierson, 1927.
‘C. & F.’ Frierson, 1927, Check List N. Amer. Naiades: 36.
(error for Unio prolongata Fischer & Crosse, 1894)
= Nephronaias calamitarum
 
Taxonomic Opinions
Alasmidonta (Bullella) arcula (Lea, 1838). — Frierson (1927: 18).
Alasmidonta (Pressodonta) calceola (Lea, 1828). — Frierson (1927: 18).
Alasmidonta (Pressodonta) calceola-minor (Lea, 1845). — Frierson (1927: 19).
Alasmidonta (Prolasmidonta) heterodon (Lea, 1829). — Frierson (1927: 19).
Alasmidonta (s.s.) triangulata (Lea, 1858). — Frierson (1927: 18).
Alasmidonta (s.s.) undulata (Say, 1817). — Frierson (1927: 18).
Alasmidonta (s.s.) undulata-mytiloides (Swainson, 1840). — Frierson (1927: 18).
Alasmidonta (Sulcularia) badia (Rafinesque, 1831). — Frierson (1927: 19).
Alasmidonta (Sulcularia) diversa (Conrad, 1856). — Frierson (1927: 19).
Amblema (Megalonaias) gigantea (Barnes, 1823). — Frierson (1927: 62).
Amblema (Megalonaias) gigantea-boykiniana (Lea, 1840). — Frierson (1927: 62).
Amblema (Megalonaias) nickliniana (Lea, 1834). — Frierson (1927: 62).
Amblema (Megalonaias) nickliniana-digitata (Morelet, 1851). — Frierson (1927: 62).
Amblema (Megalonaias) triumphans (Wright, B.H., 1898). — Frierson (1927: 62).
Amblema (Plectomerus) dombeyana (Valenciennes, 1827). — Frierson (1927: 62).
Amblema (s.s.) plicata (Say, 1819). — Frierson (1927: 60).
Amblema (s.s.) plicata-costata Rafinesque, 1820. — Frierson (1927: 61).
Amblema (s.s.) plicata-elliottii (Lea, 1856). — Frierson (1927: 61).
Amblema (s.s.) plicata-hippopaea [sic] Lea, 1845. — Frierson (1927: 61).
Amblema (s.s.) plicata-neisleri (Lea, 1858). — Frierson (1927: 61).
Amblema (s.s.) plicata-perplicata (Conrad, 1841). — Frierson (1927: 61).
Amblema (s.s.) plicata-pilsbryi (Marsh, 1891). — Frierson (1927: 61).
Amblema (s.s.) plicata-quintardi (Cragin, 1887). — Frierson (1927: 61).
Amblema (s.s.) plicata-southalli (Marshall, 1916). — Frierson (1927: 61).
Anodonta (Anodontoides) birgei (Baker, F.C., 1923). — Frierson (1927: 17).
Anodonta (Anodontoides) ferussaciana Lea, 1834. — Frierson (1927: 16).
Anodonta (Anodontoides) ferussaciana-subcylindracea Lea, 1838. — Frierson (1927: 17).
Anodonta (Anodontoides) modesta Lea, 1857. — Frierson (1927: 17).
Anodonta (Arnoldina) dejecta Lewis, 1875. — Frierson (1927: 16).
Anodonta (Lastena) couperiana Lea, 1840. — Frierson (1927: 17).
Anodonta (Lastena) couperiana-dunlapiana Lea, 1842. — Frierson (1927: 17).
Anodonta (Lastena) ohiensis Rafinesque, 1820. — Frierson (1927: 17).
Anodonta (Lastena) ohiensis-horda Gould, 1855. — Frierson (1927: 17).
Anodonta (Pyganodon) cataracta Say, 1817. — Frierson (1927: 16).
Anodonta (Pyganodon) cataracta-gibbosa Say, 1825. — Frierson (1927: 16).
Anodonta (Pyganodon) cataracta-hallenbeckii Lea, 1858. — Frierson (1927: 16).
Anodonta (Pyganodon) grandis Say, 1829. — Frierson (1927: 14).
Anodonta (Pyganodon) grandis-bealei Lea, 1863. — Frierson (1927: 15).
Anodonta (Pyganodon) grandis-benedictensis (Lea, 1834). — Frierson (1927: 15).
Anodonta (Pyganodon) grandis-dakota Frierson, 1910. — Frierson (1927: 15).
Anodonta (Pyganodon) grandis-dakotana Utterback, 1915. — Frierson (1927: 15).
Anodonta (Pyganodon) grandis-globosa Lea, 1841. — Frierson (1927: 15).
Anodonta (Pyganodon) grandis-grijalvae Morelet, 1884. — Frierson (1927: 16).
Anodonta (Pyganodon) grandis-lugubris Say, 1829. — Frierson (1927: 15).
Anodonta (Pyganodon) grandis-pepiniana Lea, 1838. — Frierson (1927: 15).
Anodonta (Pyganodon) grandis-tabascensis Morelet, 1884. — Frierson (1927: 16).
Anodonta (Pyganodon) implicata Say, 1829. — Frierson (1927: 16).
Anodonta (s.s.) beringiana Middendorff, 1851. — Frierson (1927: 13).
Anodonta (s.s.) californiensis Lea, 1852. — Frierson (1927: 13).
Anodonta (s.s.) impura Say, 1829. — Frierson (1927: 13).
Anodonta (s.s.) kennerlyi Lea, 1860. — Frierson (1927: 13).
Anodonta (s.s.) lurulenta Morelet, 1849. — Frierson (1927: 13).
Anodonta (s.s.) marginata Say, 1817. — Frierson (1927: 13).
Anodonta (s.s.) oregonensis Lea, 1838. — Frierson (1927: 14).
Anodonta (s.s.) richardsoni Martens, 1900. — Frierson (1927: 13).
Anodonta (s.s.) wahlamatensis Lea, 1838. — Frierson (1927: 14).
Anodonta (Utterbackiana) suborbiculata Say, 1831. — Frierson (1927: 17).
Anodontites cylindracea (Lea, 1838). — Frierson (1927: 97).
Anodontites depexa (von Martens, 1900). — Frierson (1927: 97).
Anodontites jaliscoensis (Pilsbry, 1920). — Frierson (1927: 97).
Anodontites montezuma (Lea, 1841). — Frierson (1927: 97).
Anodontites tehuantepecensis (Crosse & Fischer, 1894). — Frierson (1927: 97).
Anodontites tortilis (Lea, 1852). — Frierson (1927: 97).
Arcidens confragosa (Say, 1829). — Frierson (1927: 21).
Arkansia wheeleri Ortmann & Walker, 1912. — Frierson (1927: 21).
Arotonaias cyrenoides (Philippi, 1847). — Frierson (1927: 92).
Arotonaias gabbiana (Lea, 1868). — Frierson (1927: 92).
Arotonaias imbricata (Mörch, 1861). — Frierson (1927: 92).
Canthyria collina (Conrad, 1836). — Frierson (1927: 46).
Canthyria spinosa (Lea, 1838). — Frierson (1927: 46).
Carunculina glans (Lea, 1831). — Frierson (1927: 88).
Carunculina glans-corvuncula (Lea, 1868). — Frierson (1927: 88).
Carunculina glans-cylindrella (Lea, 1868). — Frierson (1927: 88).
Carunculina minor (Lea, 1843). — Frierson (1927: 88).
Carunculina parva (Barnes, 1823). — Frierson (1927: 87).
Carunculina parva-compressa (Simpson, 1900). — Frierson (1927: 88).
Carunculina parva-haleiana (Lea, 1843). — Frierson (1927: 87).
Carunculina parva-mearnsi (Simpson, 1900). — Frierson (1927: 88).
Carunculina parva-texasensis (Lea, 1857). — Frierson (1927: 87).
Carunculina paula (Lea, 1840). — Frierson (1927: 88).
Cumberlandia monodonta (Say, 1829). — Frierson (1927: 24).
Cyprogenia aberti (Conrad, 1850). — Frierson (1927: 66).
Cyprogenia stegaria (Rafinesque, 1820). — Frierson (1927: 66).
Cyprogenia stegaria-pusilla Simpson, 1900. — Frierson (1927: 66).
Decurambis marginata (Say, 1818). — Frierson (1927: 21).
Decurambis marginata-atropurpureum Rafinesque, 1831. — Frierson (1927: 21).
Decurambis marginata-varicosa (Lamarck, 1819). — Frierson (1927: 21).
Diplasma vitrea Rafinesque. — Frierson (1927: 99).
Dromus dromas (Lea, 1834). — Frierson (1927: 66).
Dromus dromas-caperatus (Lea, 1845). — Frierson (1927: 66).
Dysnomia (Capsaeformis) capsaeformis (Lea, 1834). — Frierson (1927: 95).
Dysnomia (Capsaeformis) florentina (Lea, 1857). — Frierson (1927: 95).
Dysnomia (Capsaeformis) florentina-curtisi (Utterback, 1915). — Frierson (1927: 95).
Dysnomia (Capsaeformis) lefevrei (Utterback, 1915). — Frierson (1927: 95).
Dysnomia (Capsaeformis) turgidula (Lea, 1858). — Frierson (1927: 95).
Dysnomia (Capsaeformis) walkeri (Wilson & Clark, 1914). — Frierson (1927: 95).
Dysnomia (Penita) arcaeformis (Lea, 1831). — Frierson (1927: 94).
Dysnomia (Penita) brevidens (Lea, 1831). — Frierson (1927: 94).
Dysnomia (Penita) haysiana (Lea, 1834). — Frierson (1927: 94).
Dysnomia (Penita) lenior (Lea, 1840). — Frierson (1927: 94).
Dysnomia (Penita) metastriatus (Conrad, 1838). — Frierson (1927: 93).
Dysnomia (Penita) modicella (Lea, 1859). — Frierson (1927: 94).
Dysnomia (Penita) othcaloogensis (Lea, 1857). — Frierson (1927: 94).
Dysnomia (Penita) penita (Conrad, 1834). — Frierson (1927: 93).
Dysnomia (Pilea) personata (Say, 1829). — Frierson (1927: 96).
Dysnomia (Pilea) sulcata (Lea, 1829). — Frierson (1927: 96).
Dysnomia (Pilea) sulcata-pectita (Conrad, 1853). — Frierson (1927: 96).
Dysnomia (s.s.) flexuosa (Rafinesque, 1820). — Frierson (1927: 93).
Dysnomia (s.s.) lewisi (Walker, 1910). — Frierson (1927: 93).
Dysnomia (s.s.) stewardsoni (Lea, 1852). — Frierson (1927: 93).
Dysnomia (Torulosa) biemarginata (Lea, 1857). — Frierson (1927: 95).
Dysnomia (Torulosa) propinqua (Lea, 1857). — Frierson (1927: 95).
Dysnomia (Torulosa) rangiana (Lea, 1838). — Frierson (1927: 95).
Dysnomia (Torulosa) sampsonii (Lea, 1862). — Frierson (1927: 95).
Dysnomia (Torulosa) torulosa (Rafinesque, 1820). — Frierson (1927: 94).
Dysnomia (Torulosa) torulosa-cincinnatiensis (Lea, 1840). — Frierson (1927: 94).
Dysnomia (Torulosa) torulosa-gubernaculum (Reeve, 1856). — Frierson (1927: 95).
Dysnomia (Truncillopsis) triquetra (Rafinesque, 1820). — Frierson (1927: 96).
Elliptio (Barynaias) averyi (Lea, 1859). — Frierson (1927: 39).
Elliptio (Barynaias) opacatus (Crosse & Fischer, 1893). — Frierson (1927: 39).
Elliptio (Barynaias) pigerrimus (Crosse & Fischer, 1893). — Frierson (1927: 39).
Elliptio (Barynaias) sallei (Crosse & Fischer, 1893). — Frierson (1927: 39).
Elliptio (Barynaias) sallei-grossus (von Martens, 1900). — Frierson (1927: 39).
Elliptio (Barynaias) tamaulipasensis (Conrad, 1855) [sic]. — Frierson (1927: 39).
Elliptio (Barynaias) tamaulipasensis-elongatus (Simpson, 1914). — Frierson (1927: 39).
Elliptio (Elliptoideus) sloatianus (Lea, 1840). — Frierson (1927: 33).
Elliptio (Eurynaia [sic]) dilatatus (Rafinesque, 1820). — Frierson (1927: 33).
Elliptio (Eurynaia [sic]) dilatatus-arcus (Conrad, 1834). — Frierson (1927: 34).
Elliptio (Eurynaia [sic]) dilatatus-armathwaitensis (Wright, B.H., 1898). — Frierson (1927: 34).
Elliptio (Eurynaia [sic]) dilatatus-delicatus (Simpson, 1900). — Frierson (1927: 34).
Elliptio (Eurynaia [sic]) dilatatus-fulvus (Rafinesque, 1831). — Frierson (1927: 34).
Elliptio (Martensnaias) rubicundus (von Martens, 1900). — Frierson (1927: 38).
Elliptio (Micronaias) aratus (Lea, 1843). — Frierson (1927: 39).
Elliptio (Micronaias) fallaciosus (Simpson, 1914). — Frierson (1927: 39).
Elliptio (Micronaias) granadensis (Lea, 1868). — Frierson (1927: 39).
Elliptio (Nephritica) haricotti Frierson, 1927. — Frierson (1927: 38).
Elliptio (Nephritica) poeyanus (Lea, 1857). — Frierson (1927: 38).
Elliptio (Nephronaias) aeruginosus (Morelet, 1849). — Frierson (1927: 36).
Elliptio (Nephronaias) calamitarum (Morelet, 1849). — Frierson (1927: 36).
Elliptio (Nephronaias) calamitarum-prolongus [sic] (Crosse & Fischer, 1893). — Frierson (1927: 36).
Elliptio (Nephronaias) championi (von Martens, 1900). — Frierson (1927: 36).
Elliptio (Nephronaias) copanensis (von Martens, 1900). — Frierson (1927: 36).
Elliptio (Nephronaias) dysoni (Lea, 1859). — Frierson (1927: 37).
Elliptio (Nephronaias) goascoranensis (Lea, 1858). — Frierson (1927: 36).
Elliptio (Nephronaias) guatemalensis [sic] (Martens, 1900). — Frierson (1927: 36).
Elliptio (Nephronaias) hjalmarsoni (Dunker, 1858). — Frierson (1927: 37).
Elliptio (Nephronaias) melleus (Lea, 1859). — Frierson (1927: 36).
Elliptio (Nephronaias) oregonensis (Lea, 1852). — Frierson (1927: 36).
Elliptio (Nephronaias) persulcatus (Lea, 1859). — Frierson (1927: 36).
Elliptio (Nephronaias) plicatulus (Charpentier in Küster, 1856). — Frierson (1927: 35).
Elliptio (Nephronaias) ravistellus (Morelet, 1849). — Frierson (1927: 36).
Elliptio (Nephronaias) ravistellus-vellicatus (Sowerby, 1865). — Frierson (1927: 36).
Elliptio (Nephronaias) ravistellus-yzabalensis (Crosse & Fischer, 1892). — Frierson (1927: 36).
Elliptio (Nephronaias) rowellii (Lea, 1859). — Frierson (1927: 37).
Elliptio (Nephronaias) rugolosus [sic] (Charpentier in Küster, 1856). — Frierson (1927: 35).
Elliptio (Nephronaias) sajensis (Frierson, 1927). — Frierson (1927: 37).
Elliptio (Nephronaias) scamnatus (Morelet, 1849). — Frierson (1927: 35).
Elliptio (Nephronaias) sphenorhynchus (Crosse & Fischer, 1893). — Frierson (1927: 36).
Elliptio (Nephronaias) subventralis (von Martens, 1900). — Frierson (1927: 36).
Elliptio (Nephronaias) tabascoensis (Charpentier in Küster, 1856). — Frierson (1927: 36).
Elliptio (Pachynaias) rugososulcatus (Lea, 1866). — Frierson (1927: 38).
Elliptio (Pachynaias) spheniopsis (Crosse & Fischer, 1893) [sic]. — Frierson (1927: 38).
Elliptio (Popenaias) metallicus (Say, 1831). — Frierson (1927: 38).
Elliptio (Popenaias) metallicus-ganinus (Pilsbry, 1909). — Frierson (1927: 38).
Elliptio (Popenaias) popei (Lea, 1857). — Frierson (1927: 38).
Elliptio (Reticulatus) reticulatus (Simpson, 1900). — Frierson (1927: 38).
Elliptio (s.s.) aheneus (Lea, 1841). — Frierson (1927: 29).
Elliptio (s.s.) aheneus-oscari (Wright, B.H., 1892). — Frierson (1927: 29).
Elliptio (s.s.) angustatus (Lea, 1831). — Frierson (1927: 30).
Elliptio (s.s.) anthonyi (Lea, 1861). — Frierson (1927: 25).
Elliptio (s.s.) aquilus (Lea, 1857). — Frierson (1927: 30).
Elliptio (s.s.) arctatus (Conrad, 1834). — Frierson (1927: 28).
Elliptio (s.s.) buckleyi (Lea, 1841). — Frierson (1927: 26).
Elliptio (s.s.) buddianus (Lea, 1843). — Frierson (1927: 26).
Elliptio (s.s.) buddianus-dalli (Wright, B.H., 1888). — Frierson (1927: 26).
Elliptio (s.s.) buddianus-hartwrightii (Wright, B.H., 1896). — Frierson (1927: 26).
Elliptio (s.s.) buddianus-monroensis (Lea, 1843). — Frierson (1927: 26).
Elliptio (s.s.) buddianus-orcuttii (Wright, S.H., 1888). — Frierson (1927: 27).
Elliptio (s.s.) buddianus-pinei (Wright, B.H., 1897). — Frierson (1927: 27).
Elliptio (s.s.) buxtoni (Wright, B.H., 1897). — Frierson (1927: 29).
Elliptio (s.s.) chipolaensis (Walker, 1905). — Frierson (1927: 29).
Elliptio (s.s.) complanatus (Dillwyn, 1817). — Frierson (1927: 30).
Elliptio (s.s.) complanatus-catawbensis (Lea, 1862). — Frierson (1927: 32).
Elliptio (s.s.) complanatus-cuvierianus (Lea, 1852). — Frierson (1927: 32).
Elliptio (s.s.) complanatus-icterinus (Conrad, 1834). — Frierson (1927: 32).
Elliptio (s.s.) complanatus-jejunus (Lea, 1838). — Frierson (1927: 32).
Elliptio (s.s.) complanatus-livingstonensis (Lea, 1863). — Frierson (1927: 32).
Elliptio (s.s.) complanatus-northamptonensis (Lea, 1862). — Frierson (1927: 32).
Elliptio (s.s.) complanatus-ocmulgeensis (Lea, 1861). — Frierson (1927: 32).
Elliptio (s.s.) complanatus-plantii (Lea, 1857). — Frierson (1927: 32).
Elliptio (s.s.) complanatus-pullatus (Lea, 1858). — Frierson (1927: 32).
Elliptio (s.s.) complanatus-subinflatus (Conrad, 1835). — Frierson (1927: 32).
Elliptio (s.s.) complanatus-tuomeyi (Lea, 1852). — Frierson (1927: 32).
Elliptio (s.s.) congaraeus (Lea, 1831). — Frierson (1927: 25).
Elliptio (s.s.) coruscus (Gould, 1856). — Frierson (1927: 27).
Elliptio (s.s.) coruscus-fryanus (Wright, B.H., 1888). — Frierson (1927: 27).
Elliptio (s.s.) cunninghami (Wright, B.H., 1883). — Frierson (1927: 27).
Elliptio (s.s.) cylindraceus Frierson, 1927. — Frierson (1927: 29).
Elliptio (s.s.) dariensis (Lea, 1842). — Frierson (1927: 25).
Elliptio (s.s.) dorei (Wright, B.H., 1888). — Frierson (1927: 27).
Elliptio (s.s.) dorsatus (Lea, 1868). — Frierson (1927: 27).
Elliptio (s.s.) downiei (Lea, 1858). — Frierson (1927: 26).
Elliptio (s.s.) duttonianus (Lea, 1841). — Frierson (1927: 30).
Elliptio (s.s.) emmonsii (Lea, 1857). — Frierson (1927: 30).
Elliptio (s.s.) errans (Lea, 1856). — Frierson (1927: 33).
Elliptio (s.s.) ferrissii (Marsh, 1891). — Frierson (1927: 27).
Elliptio (s.s.) folliculatus (Lea, 1838). — Frierson (1927: 32).
Elliptio (s.s.) forbesianus (Lea, 1853). — Frierson (1927: 25).
Elliptio (s.s.) fraternus (Lea, 1852). — Frierson (1927: 26).
Elliptio (s.s.) fuscatus (Lea, 1841). — Frierson (1927: 28).
Elliptio (s.s.) geddingsianus (Lea, 1840). — Frierson (1927: 28).
Elliptio (s.s.) geminus (Lea, 1856). — Frierson (1927: 26).
Elliptio (s.s.) hazelhurstianus (Lea, 1858). — Frierson (1927: 29).
Elliptio (s.s.) hepaticus (Lea, 1859). — Frierson (1927: 28).
Elliptio (s.s.) hinkleyi (Wright, B.H., 1888). — Frierson (1927: 27).
Elliptio (s.s.) insulsus (Lea, 1857). — Frierson (1927: 29).
Elliptio (s.s.) jayensis (Lea, 1838). — Frierson (1927: 27).
Elliptio (s.s.) jayensis-tryoni (Wright, B.H., 1888). — Frierson (1927: 27).
Elliptio (s.s.) lanceolatus (Lea, 1828). — Frierson (1927: 33).
Elliptio (s.s.) lecontianus (Lea, 1838). — Frierson (1927: 26).
Elliptio (s.s.) lehmani (Wright, S.H., 1897). — Frierson (1927: 28).
Elliptio (s.s.) lucidus (Lea, 1863). — Frierson (1927: 29).
Elliptio (s.s.) marshii (Wright, B.H., 1888). — Frierson (1927: 27).
Elliptio (s.s.) masoni (Conrad, 1834). — Frierson (1927: 25).
Elliptio (s.s.) micans (Lea, 1857). — Frierson (1927: 33).
Elliptio (s.s.) naviculoides (Lea, 1857). — Frierson (1927: 29).
Elliptio (s.s.) nigellus (Lea, 1853). — Frierson (1927: 28).
Elliptio (s.s.) niger (Rafinesque, 1820). — Frierson (1927: 25).
Elliptio (s.s.) niger-danielsi (Wright, B.H., 1899). — Frierson (1927: 25).
Elliptio (s.s.) niger-incrassatus (Lea, 1840). — Frierson (1927: 25).
Elliptio (s.s.) nolani (Wright, B.H., 1888). — Frierson (1927: 29).
Elliptio (s.s.) obnubilus (Lea, 1857). — Frierson (1927: 29).
Elliptio (s.s.) occultus (Lea, 1841). — Frierson (1927: 28).
Elliptio (s.s.) perstriatus (Lea, 1852). — Frierson (1927: 33).
Elliptio (s.s.) polymorphus (Wright, B.H., 1899). — Frierson (1927: 26).
Elliptio (s.s.) productus (Conrad, 1836). — Frierson (1927: 29).
Elliptio (s.s.) pusillus (Lea, 1840). — Frierson (1927: 26).
Elliptio (s.s.) pygmaeus (Lea, 1852). — Frierson (1927: 27).
Elliptio (s.s.) raveneli (Conrad, 1834). — Frierson (1927: 28).
Elliptio (s.s.) rostraeformis (Lea, 1856). — Frierson (1927: 33).
Elliptio (s.s.) shepardianus (Lea, 1834). — Frierson (1927: 33).
Elliptio (s.s.) similis (Lea, 1857). — Frierson (1927: 29).
Elliptio (s.s.) spadiceus (Lea, 1857). — Frierson (1927: 33).
Elliptio (s.s.) spissus (Lea, 1859). — Frierson (1927: 26).
Elliptio (s.s.) subluridus (Simpson, 1900). — Frierson (1927: 27).
Elliptio (s.s.) subniger (Lea, 1857). — Frierson (1927: 33).
Elliptio (s.s.) suttoni (Wright, B.H., 1897). — Frierson (1927: 27).
Elliptio (s.s.) tenuisculus (Frierson, 1911). — Frierson (1927: 27).
Elliptio (s.s.) tortivus (Lea, 1840). — Frierson (1927: 28).
Elliptio (s.s.) viridicatus (Lea, 1857). — Frierson (1927: 29).
Elliptio (s.s.) viridulus (Lea, 1863). — Frierson (1927: 33).
Elliptio (s.s.) waccamawensis (Lea, 1863). — Frierson (1927: 28).
Elliptio (s.s.) waltoni (Wright, B.H., 1888). — Frierson (1927: 29).
Elliptio (Sphenonaias) callosus (Lea, 1841). — Frierson (1927: 37).
Elliptio (Sphenonaias) coloratus (Charpentier, 1856). — Frierson (1927: 37).
Elliptio (Sphenonaias) flucki (Bartsch, 1906). — Frierson (1927: 38).
Elliptio (Sphenonaias) liebmanni (Philippi, 1847). — Frierson (1927: 37).
Elliptio (Sphenonaias) liebmanni-cuatotolapamensis [sic] Baker, H.B., 1922. — Frierson (1927: 37).
Elliptio (Sphenonaias) mexicanus (Philippi, 1847). — Frierson (1927: 37).
Elliptio (Sphenonaias) microdon (von Martens, 1887). — Frierson (1927: 37).
Elliptio (Uniomerus) bissellianus [sic] (Lea, 1867). — Frierson (1927: 35).
Elliptio (Uniomerus) declivis (Say, 1831). — Frierson (1927: 34).
Elliptio (Uniomerus) dispalans (Wright, B.H., 1899). — Frierson (1927: 35).
Elliptio (Uniomerus) obesus (Lea, 1831). — Frierson (1927: 35).
Elliptio (Uniomerus) obesus-blandingianus (Lea, 1834). — Frierson (1927: 35).
Elliptio (Uniomerus) obesus-paludicolus (Lea, 1834). — Frierson (1927: 35).
Elliptio (Uniomerus) tetralasmus (Say, 1831). — Frierson (1927: 34).
Elliptio (Uniomerus) tetralasmus-camptodon (Say, 1832). — Frierson (1927: 34).
Elliptio (Uniomerus) tetralasmus-columbensis (Lea, 1857). — Frierson (1927: 34).
Elliptio (Uniomerus) tetralasmus-manubius (Gould, 1855). — Frierson (1927: 34).
Elliptio (Uniomerus) tetralasmus-sayi (Ward, 1839). — Frierson (1927: 34).
Glebula suborbiculata (Lamarck, 1819). — Frierson (1927: 91).
Gonidea angulata (Lea, 1838). — Frierson (1927: 67).
Gonidea angulata-haroldiana Dall, 1908. — Frierson (1927: 67).
Gonidea angulata-subangulata (Hemphill, 1891). — Frierson (1927: 67).
Hemistena lata (Rafinesque, 1820). — Frierson (1927: 66).
Lampsilis (Actinonaias) computata (Crosse & Fischer, 1893). — Frierson (1927: 84).
Lampsilis (Actinonaias) coyensis Pilsbry, 1909. — Frierson (1927: 84).
Lampsilis (Actinonaias) gundlachi (Dunker, 1858). — Frierson (1927: 84).
Lampsilis (Actinonaias) meddellina [sic] (Lea, 1838). — Frierson (1927: 84).
Lampsilis (Actinonaias) moctezumensis Pilsbry, 1909. — Frierson (1927: 84).
Lampsilis (Actinonaias) ruthveni Baker, H.B., 1922. — Frierson (1927: 84).
Lampsilis (Actinonaias) sapotalensis (Lea, 1841). — Frierson (1927: 84).
Lampsilis (Actinonaias) signata Pilsbry, 1909. — Frierson (1927: 84).
Lampsilis (Actinonaias) undivaga Pilsbry, 1909. — Frierson (1927: 84).
Lampsilis (Cyrtonaias) alienigena (Crosse & Fischer, 1893). — Frierson (1927: 85).
Lampsilis (Cyrtonaias) explicata (Morelet, 1849). — Frierson (1927: 85).
Lampsilis (Cyrtonaias) livida Simpson, 1900. — Frierson (1927: 85).
Lampsilis (Cyrtonaias) saladoensis (Lea, 1860). — Frierson (1927: 85).
Lampsilis (Cyrtonaias) sapperi (von Ihering, 1901). — Frierson (1927: 85).
Lampsilis (Cyrtonaias) tampicoensis (Lea, 1838). — Frierson (1927: 85).
Lampsilis (Cyrtonaias) tampicoensis-berlandieri (Lea, 1857). — Frierson (1927: 85).
Lampsilis (Cyrtonaias) tampicoensis-heermanni (Lea, 1862). — Frierson (1927: 85).
Lampsilis (Cyrtonaias) tampicoensis-kusteriana N.V. — Frierson (1927: 85).
Lampsilis (Cyrtonaias) tampicoensis-tecomatensis (Lea, 1841). — Frierson (1927: 85).
Lampsilis (Cyrtonaias) umbrosa (Lea, 1856). — Frierson (1927: 85).
Lampsilis (Delphinonaias) delphinulus (Morelet, 1849). — Frierson (1927: 84).
Lampsilis (Delphinonaias) paludosa (Morelet, 1849). — Frierson (1927: 84).
Lampsilis (Delphinonaias) scutulata (Morelet, 1849). — Frierson (1927: 84).
Lampsilis (Disconaias) aztecorum (Philippi, 1847). — Frierson (1927: 83).
Lampsilis (Disconaias) discus (Lea, 1838). — Frierson (1927: 82).
Lampsilis (Disconaias) fimbriata Frierson, 1907. — Frierson (1927: 83).
Lampsilis (Disconaias) martensi Frierson, 1927. — Frierson (1927: 83).
Lampsilis (Disconaias) novi-leonensis [sic] Pilsbry, 1908. — Frierson (1927: 83).
Lampsilis (Disconaias) panucoensis [sic] (von dem Busch in Philippi, 1843). — Frierson (1927: 82).
Lampsilis (Disconaias) pilsbryana Frierson, 1927. — Frierson (1927: 83).
Lampsilis (Disconaias) purpuriata (Say, 1831). — Frierson (1927: 83).
Lampsilis (Friersonia) iridella Pilsbry & Frierson, 1907. — Frierson (1927: 84).
Lampsilis (Friersonia) semirasa Pilsbry, 1909. — Frierson (1927: 84).
Lampsilis (Leptodea) fragilis (Rafinesque, 1820). — Frierson (1927: 82).
Lampsilis (Leptodea) fragilis-simpsoni Ferriss, 1900. — Frierson (1927: 82).
Lampsilis (Leptodea) leptodon (Rafinesque, 1820). — Frierson (1927: 82).
Lampsilis (Leptodea) velum (Say, 1829). — Frierson (1927: 82).
Lampsilis (Ligumia) australis Simpson, 1900. — Frierson (1927: 71).
Lampsilis (Ligumia) borealis (Gray, 1882). — Frierson (1927: 72).
Lampsilis (Ligumia) bracteata (Gould, 1855). — Frierson (1927: 73).
Lampsilis (Ligumia) delumbis (Conrad, 1834). — Frierson (1927: 75).
Lampsilis (Ligumia) fabacea (Lea, 1861). — Frierson (1927: 75).
Lampsilis (Ligumia) fasciata (Rafinesque, 1820). — Frierson (1927: 71).
Lampsilis (Ligumia) fasciata-claibornensis (Lea, 1838). — Frierson (1927: 72).
Lampsilis (Ligumia) fasciata-hydiana (Lea, 1838). — Frierson (1927: 72).
Lampsilis (Ligumia) fasciata-opalina (Anthony, J.G., 1866). — Frierson (1927: 72).
Lampsilis (Ligumia) fasciata-rosacea (DeKay, 1843). — Frierson (1927: 72).
Lampsilis (Ligumia) fasciata-straminea (Conrad, 1834). — Frierson (1927: 72).
Lampsilis (Ligumia) fasciata-superiorensis (Marsh, 1897). — Frierson (1927: 72).
Lampsilis (Ligumia) gracilior (Lea, 1856). — Frierson (1927: 78).
Lampsilis (Ligumia) lienosa (Conrad, 1834). — Frierson (1927: 74).
Lampsilis (Ligumia) menkiana (Lea, 1838). — Frierson (1927: 79).
Lampsilis (Ligumia) modioliformis (Lea, 1834). — Frierson (1927: 76).
Lampsilis (Ligumia) nasuta (Say, 1817). — Frierson (1927: 78).
Lampsilis (Ligumia) nebulosa (Conrad, 1834). — Frierson (1927: 78).
Lampsilis (Ligumia) nervosa (Rafinesque, 1820). — Frierson (1927: 77).
Lampsilis (Ligumia) ogeecheensis (Conrad, 1849). — Frierson (1927: 76).
Lampsilis (Ligumia) ortmanni (Walker, 1925). — Frierson (1927: 75).
Lampsilis (Ligumia) perpasta (Lea, 1861). — Frierson (1927: 73).
Lampsilis (Ligumia) picta (Lea, 1834). — Frierson (1927: 79).
Lampsilis (Ligumia) powellii (Lea, 1853). — Frierson (1927: 73).
Lampsilis (Ligumia) prattii (Lea, 1858). — Frierson (1927: 75).
Lampsilis (Ligumia) propia [sic] (Lea, 1865). — Frierson (1927: 75).
Lampsilis (Ligumia) radians (Lea, 1857). — Frierson (1927: 78).
Lampsilis (Ligumia) radiata (Gmelin, 1791). — Frierson (1927: 72).
Lampsilis (Ligumia) radiata-mellina [sic] (Conrad, 1838). — Frierson (1927: 72).
Lampsilis (Ligumia) radiata-oneidensis Baker, F.C., 1918. — Frierson (1927: 73).
Lampsilis (Ligumia) radiata-tenebrosa (Conrad, 1834). — Frierson (1927: 73).
Lampsilis (Ligumia) recta (Lamarck, 1819). — Frierson (1927: 70).
Lampsilis (Ligumia) recta-latissima (Rafinesque, 1820). — Frierson (1927: 70).
Lampsilis (Ligumia) reeviana [sic] (Lea, 1852). — Frierson (1927: 73).
Lampsilis (Ligumia) reeviana-brevicula (Call, 1887). — Frierson (1927: 73).
Lampsilis (Ligumia) stagnalis (Conrad, 1849). — Frierson (1927: 76).
Lampsilis (Ligumia) streckeri Frierson, 1927. — Frierson (1927: 74).
Lampsilis (Ligumia) subangulata (Lea, 1840). — Frierson (1927: 76).
Lampsilis (Ligumia) subrostrata (Say, 1831). — Frierson (1927: 77).
Lampsilis (Ligumia) subrostrata-furva Simpson, 1914. — Frierson (1927: 77).
Lampsilis (Ligumia) taeniata (Conrad, 1834). — Frierson (1927: 79).
Lampsilis (Ligumia) tenera (Lea, 1840). — Frierson (1927: 77).
Lampsilis (Ligumia) teres (Rafinesque, 1820). — Frierson (1927: 70).
Lampsilis (Ligumia) teres-fallaciosa Simpson, 1900 [sic]. — Frierson (1927: 70).
Lampsilis (Ligumia) teres-floridensis (Lea, 1852). — Frierson (1927: 70).
Lampsilis (Ligumia) vanuxemensis (Lea, 1838). — Frierson (1927: 76).
Lampsilis (Ligumia) vibex (Conrad, 1834). — Frierson (1927: 76).
Lampsilis (Ligumia) vibex-dispar (Lea, 1860). — Frierson (1927: 76).
Lampsilis (Ligumia) vibex-nigrina (Lea, 1852). — Frierson (1927: 76).
Lampsilis (Ligumia) vibex-planicostata (Lea, 1860). — Frierson (1927: 76).
Lampsilis (Ligumia) virescens (Lea, 1858). — Frierson (1927: 70).
Lampsilis (Ligumia) zeigleriana (Lea, 1838). — Frierson (1927: 75).
Lampsilis (Ortmanniana) abruptus (Say, 1831). — Frierson (1927: 80).
Lampsilis (Ortmanniana) carinata (Barnes, 1823). — Frierson (1927: 79).
Lampsilis (Ortmanniana) carinata-calendis (Rafinesque, 1831). — Frierson (1927: 79).
Lampsilis (Ortmanniana) carinata-pinguis (Lea, 1857). — Frierson (1927: 80).
Lampsilis (Ortmanniana) carinata-upsoni (Marsh, 1887). — Frierson (1927: 79).
Lampsilis (Ortmanniana) higginsii (Lea, 1857). — Frierson (1927: 80).
Lampsilis (s.s.) altilis (Conrad, 1834). — Frierson (1927: 69).
Lampsilis (s.s.) cardium Rafinesque, 1820. — Frierson (1927: 67).
Lampsilis (s.s.) cardium-lurida Simpson, 1914. — Frierson (1927: 67).
Lampsilis (s.s.) cardium-satura (Lea, 1853). — Frierson (1927: 67).
Lampsilis (s.s.) cariosa (Say, 1817). — Frierson (1927: 68).
Lampsilis (s.s.) dolabraeformis (Lea, 1838). — Frierson (1927: 68).
Lampsilis (s.s.) fasciola Rafinesque, 1820. — Frierson (1927: 69).
Lampsilis (s.s.) ochracea (Say, 1817). — Frierson (1927: 68).
Lampsilis (s.s.) ornatus (Conrad, 1835). — Frierson (1927: 68).
Lampsilis (s.s.) ovatus (Say, 1817). — Frierson (1927: 67).
Lampsilis (s.s.) pectorosa (Conrad, 1834). — Frierson (1927: 69).
Lampsilis (s.s.) pectorosa-biangularis (Lea, 1840). — Frierson (1927: 69).
Lampsilis (s.s.) perovalis (Conrad, 1834). — Frierson (1927: 69).
Lampsilis (s.s.) rafinesqueana Frierson, 1927. — Frierson (1927: 69).
Lampsilis (s.s.) sowerbyana Frierson, 1927. — Frierson (1927: 69).
Lampsilis (s.s.) spillmani (Lea, 1861). — Frierson (1927: 69).
Lampsilis (s.s.) splendida (Lea, 1838). — Frierson (1927: 69).
Lampsilis (Venusta) arkansensis [sic] (Lea, 1862). — Frierson (1927: 81).
Lampsilis (Venusta) constricta (Conrad, 1838). — Frierson (1927: 81).
Lampsilis (Venusta) ellipsiformis (Conrad, 1836). — Frierson (1927: 81).
Lampsilis (Venusta) pleasii (Marsh, 1891). — Frierson (1927: 81).
Lampsilis (Venusta) trabalis (Conrad, 1834). — Frierson (1927: 81).
Lampsilis (Venusta) venusta (Lea, 1838). — Frierson (1927: 81).
Lampsilis (Villosa) amygdalum (Lea, 1843). — Frierson (1927: 80).
Lampsilis (Villosa) pellucidus (Lea, 1845). — Frierson (1927: 81).
Lampsilis (Villosa) vesicularis (Lea, 1872). — Frierson (1927: 80).
Lampsilis (Villosa) villosa (Wright, B.H., 1898). — Frierson (1927: 80).
Lampsilis (Villosa) wrightiana Frierson, 1927. — Frierson (1927: 81).
Lasmigona (Platynaias) charlottensis (Lea, 1863). — Frierson (1927: 21).
Lasmigona (Platynaias) decorata (Lea, 1852). — Frierson (1927: 20).
Lasmigona (Platynaias) quadrata (Lea, 1861). — Frierson (1927: 20).
Lasmigona (Platynaias) subviridis (Conrad, 1835). — Frierson (1927: 20).
Lasmigona (Platynaias) subviridis-neglecta (Lea, 1843). — Frierson (1927: 20).
Lasmigona (Platynaias) viridis (Rafinesque, 1820). — Frierson (1927: 20).
Lasmigona (Platynaias) viridis-plebia (Adams, C.B., 1842). — Frierson (1927: 20).
Lasmigona (Pterosyna) complanata (Barnes, 1823). — Frierson (1927: 20).
Lasmigona (Pterosyna) complanata-katherinae (Lea, 1838). — Frierson (1927: 20).
Lasmigona (s.s.) costata (Rafinesque, 1820). — Frierson (1927: 19).
Lasmigona (s.s.) costata-ereganensis Grier, 1918. — Frierson (1927: 19).
Lasmigona (s.s.) costata-viridis (Rafinesque, 1831). — Frierson (1927: 19).
Leila (Pseudoleila) ciconia (Gould, 1851). — Frierson (1927: 97).
Leila (Pseudoleila) nicaragua [sic] (Philippi, 1848). — Frierson (1927: 97).
Leila (Pseudoleila) trapezialis [sic]-glauca (Valenciennes, 1827). — Frierson (1927: 97).
Lemiox fabalis (Lea, 1831). — Frierson (1927: 93).
Lemiox rimosus (Rafinesque, 1831). — Frierson (1927: 92).
Margaritana hembeli (Conrad, 1838). — Frierson (1927: 24).
Margaritana margaritifera (Linnaeus, 1758). — Frierson (1927: 24).
Medionidus acutissimus (Lea, 1831). — Frierson (1927: 92).
Medionidus conradicus (Lea, 1834). — Frierson (1927: 92).
Medionidus penicillatus (Lea, 1857). — Frierson (1927: 92).
Medionidus simpsonianus Walker, 1905. — Frierson (1927: 92).
Medionidus walkeri (Wright, S.H., 1897). — Frierson (1927: 92).
Mycetopoda weddellii (Húpe, 1857). — Frierson (1927: 98).
Obliquaria reflexa Rafinesque, 1820. — Frierson (1927: 65).
Obliquaria reflexa-conradi N.V. — Frierson (1927: 65).
Obovaria (Pseudoon) castanea (Lea, 1831). — Frierson (1927: 91).
Obovaria (Pseudoon) curtus (Lea, 1859). — Frierson (1927: 91).
Obovaria (Pseudoon) jacksoniana (Frierson, 1912). — Frierson (1927: 91).
Obovaria (Pseudoon) olivaria (Rafinesque, 1820). — Frierson (1927: 91).
Obovaria (s.s.) levigata (Rafinesque, 1820). — Frierson (1927: 90).
Obovaria (s.s.) retusa (Lamarck, 1819). — Frierson (1927: 89).
Obovaria (s.s.) rotulata (Wright, B.H., 1899). — Frierson (1927: 90).
Obovaria (s.s.) subrotunda (Rafinesque, 1820). — Frierson (1927: 90).
Obovaria (s.s.) subrotunda-depygis (Conrad, 1866). — Frierson (1927: 90).
Obovaria (s.s.) subrotunda-uber (Conrad, 1866). — Frierson (1927: 90).
Obovaria (s.s.) subrotunda-unicolor (Lea, 1845). — Frierson (1927: 90).
Parreysia robsoni Frierson, 1927. — Frierson (1927: 45).
Pegias fabula (Lea, 1838). — Frierson (1927: 21).
Plagiola lineolata (Rafinesque, 1820). — Frierson (1927: 89).
Pleurobema (Lexingtonia) castum (Lea, 1860). — Frierson (1927: 45).
Pleurobema (Lexingtonia) subplanum (Conrad, 1837). — Frierson (1927: 44).
Pleurobema (Lexingtonia) utriculum (Lea, 1845). — Frierson (1927: 45).
Pleurobema (Plethobasus) cicatricoideum [sic] (Frierson, 1911). — Frierson (1927: 45).
Pleurobema (Plethobasus) compertum (Frierson, 1911). — Frierson (1927: 46).
Pleurobema (Plethobasus) cyphyum (Rafinesque, 1820). — Frierson (1927: 45).
Pleurobema (Plethobasus) cyphyum-phillipsi (Conrad, 1835). — Frierson (1927: 45).
Pleurobema (Plethobasus) detectum (Frierson, 1911). — Frierson (1927: 45).
Pleurobema (s.s.) aldrichi Frierson, 1927. — Frierson (1927: 44).
Pleurobema (s.s.) altum (Conrad, 1854). — Frierson (1927: 42).
Pleurobema (s.s.) amabile (Lea, 1865). — Frierson (1927: 43).
Pleurobema (s.s.) avellana (Simpson, 1900). — Frierson (1927: 42).
Pleurobema (s.s.) bulbosum (Lea, 1857). — Frierson (1927: 43).
Pleurobema (s.s.) clava-patulum (Lea, 1829). — Frierson (1927: 40).
Pleurobema (s.s.) concolor (Lea, 1861). — Frierson (1927: 41).
Pleurobema (s.s.) decisus (Lea, 1831). — Frierson (1927: 41).
Pleurobema (s.s.) decisus-chattanoogaensis (Lea, 1858). — Frierson (1927: 41).
Pleurobema (s.s.) fibuloides (Lea, 1859). — Frierson (1927: 42).
Pleurobema (s.s.) fictum Frierson, 1927. — Frierson (1927: 43).
Pleurobema (s.s.) flavidulum (Lea, 1861). — Frierson (1927: 41).
Pleurobema (s.s.) furvum (Conrad, 1834). — Frierson (1927: 41).
Pleurobema (s.s.) gibberum (Lea, 1838). — Frierson (1927: 43).
Pleurobema (s.s.) hagleri (Frierson, 1900). — Frierson (1927: 41).
Pleurobema (s.s.) hanleyanum [sic] (Lea, 1852). — Frierson (1927: 42).
Pleurobema (s.s.) harperi (Wright, B.H., 1899). — Frierson (1927: 43).
Pleurobema (s.s.) hartmanianum (Lea, 1860). — Frierson (1927: 42).
Pleurobema (s.s.) instructum (Lea, 1861). — Frierson (1927: 42).
Pleurobema (s.s.) interventum (Lea, 1861). — Frierson (1927: 41).
Pleurobema (s.s.) johannis (Lea, 1859). — Frierson (1927: 42).
Pleurobema (s.s.) lewisii (Lea, 1861). — Frierson (1927: 42).
Pleurobema (s.s.) marshalli Frierson, 1927. — Frierson (1927: 43).
Pleurobema (s.s.) modicum (Lea, 1857). — Frierson (1927: 43).
Pleurobema (s.s.) murrayense (Lea, 1868). — Frierson (1927: 41).
Pleurobema (s.s.) mytiloides Rafinesque, 1820. — Frierson (1927: 40).
Pleurobema (s.s.) nucleopsis (Conrad, 1849). — Frierson (1927: 42).
Pleurobema (s.s.) oviformis (Conrad, 1834). — Frierson (1927: 41).
Pleurobema (s.s.) perovatum (Conrad, 1834). — Frierson (1927: 41).
Pleurobema (s.s.) pulvinulum (Lea, 1845). — Frierson (1927: 42).
Pleurobema (s.s.) pyriforme (Lea, 1857). — Frierson (1927: 43).
Pleurobema (s.s.) rubellum (Conrad, 1834). — Frierson (1927: 41).
Pleurobema (s.s.) showalteri (Lea, 1860). — Frierson (1927: 42).
Pleurobema (s.s.) simulans (Lea, 1871). — Frierson (1927: 43).
Pleurobema (s.s.) striatum (Lea, 1840). — Frierson (1927: 42).
Pleurobema (s.s.) strodeanum (Wright, B.H., 1898). — Frierson (1927: 43).
Pleurobema (s.s.) taitianum (Lea, 1834). — Frierson (1927: 42).
Proptera alata (Say, 1817). — Frierson (1927: 86).
Proptera amphichaena (Frierson, 1898). — Frierson (1927: 87).
Proptera capax (Green, 1832). — Frierson (1927: 87).
Proptera inflata (Lea, 1831). — Frierson (1927: 87).
Proptera laevissima (Lea, 1829). — Frierson (1927: 86).
Proptera purpurata (Lamarck, 1819). — Frierson (1927: 86).
Proptera purpurata-poulsoni (Conrad, 1834). — Frierson (1927: 87).
Proptera rovirosai (Pilsbry, 1900). — Frierson (1927: 87).
Psoronaias crocodilorum (Morelet, 1849). — Frierson (1927: 63).
Psoronaias distinctus (Crosse & Fischer, 1893). — Frierson (1927: 64).
Psoronaias guatemalensis (Simpson, 1900). — Frierson (1927: 64).
Psoronaias herrerae (Marshall, 1923). — Frierson (1927: 64).
Psoronaias kuxensis Frierson, 1917. — Frierson (1927: 64).
Psoronaias martensi Frierson, 1927. — Frierson (1927: 64).
Psoronaias morini (Morelet, 1851). — Frierson (1927: 64).
Psoronaias ostreatus (Morelet, 1849). — Frierson (1927: 64).
Psoronaias percompressus (Crosse & Fischer, 1893) [sic]. — Frierson (1927: 64).
Psoronaias plexoideus Frierson, 1927. — Frierson (1927: 63).
Psoronaias plexus (Conrad, 1838). — Frierson (1927: 63).
Psoronaias profunda (Simpson, 1914). — Frierson (1927: 64).
Psoronaias quadrata (Simpson, 1914). — Frierson (1927: 64).
Psoronaias rudis (Simpson, 1900). — Frierson (1927: 63).
Psoronaias semigranosus (von dem Busch, 1845). — Frierson (1927: 63).
Psoronaias semigranosus-corium (Reeve, 1864). — Frierson (1927: 63).
Psoronaias semigranosus-psoricus (Morelet, 1851). — Frierson (1927: 63).
Psoronaias usumacintae Crosse & Fischer, 1892. — Frierson (1927: 64).
Ptychobranchus (s.s.) fasciolare (Rafinesque, 1820). — Frierson (1927: 64).
Ptychobranchus (s.s.) fasciolare-arquatum (Conrad, 1854). — Frierson (1927: 64).
Ptychobranchus (s.s.) fasciolare-longa (Rafinesque, 1820). — Frierson (1927: 64).
Ptychobranchus (s.s.) foremanianum (Lea, 1842). — Frierson (1927: 65).
Ptychobranchus (s.s.) greeni (Conrad, 1834). — Frierson (1927: 65).
Ptychobranchus (s.s.) occidentalis (Conrad, 1836). — Frierson (1927: 65).
Ptychobranchus (Subtentus) subtentum (Say, 1825). — Frierson (1927: 65).
Quadrula (Bullata) archeri Frierson, 1905. — Frierson (1927: 49).
Quadrula (Bullata) aureus (Lea, 1859). — Frierson (1927: 49).
Quadrula (Bullata) couchiana (Lea, 1860). — Frierson (1927: 50).
Quadrula (Bullata) houstonensis (Lea, 1859). — Frierson (1927: 49).
Quadrula (Bullata) nodulata (Rafinesque, 1820). — Frierson (1927: 49).
Quadrula (Bullata) petrina (Gould, 1855). — Frierson (1927: 49).
Quadrula (Bullata) pustulosa (Lea, 1831). — Frierson (1927: 48).
Quadrula (Bullata) pustulosa-asperata (Lea, 1861). — Frierson (1927: 49).
Quadrula (Bullata) pustulosa-keineriana [sic] (Lea, 1853). — Frierson (1927: 49).
Quadrula (Bullata) pustulosa-mortoni (Conrad, 1836). — Frierson (1927: 49).
Quadrula (Bullata) pustulosa-paupercula (Lea, 1861). — Frierson (1927: 49).
Quadrula (Bullata) pustulosa-prasina (Conrad, 1834). — Frierson (1927: 48).
Quadrula (Bullata) pustulosa-refulgens (Lea, 1868). — Frierson (1927: 49).
Quadrula (Bullata) pustulosa-vallata (Lea, 1868). — Frierson (1927: 49).
Quadrula (Cyclonaias) tuberculata (Rafinesque, 1820). — Frierson (1927: 52).
Quadrula (Cyclonaias) tuberculata-granifera (Lea, 1838). — Frierson (1927: 52).
Quadrula (Cyclonaias) tuberculata-pusilla (Simpson, 1900). — Frierson (1927: 52).
Quadrula (Cyclonaias) tuberculata-utterbackiana Frierson, 1927. — Frierson (1927: 52).
Quadrula (Fusconia [sic]) antrosa (Rafinesque, 1820). — Frierson (1927: 55).
Quadrula (Fusconia [sic]) askewi (Marsh, 1896). — Frierson (1927: 57).
Quadrula (Fusconia [sic]) beadleana [sic] (Lea, 1861). — Frierson (1927: 57).
Quadrula (Fusconia [sic]) bursa-pastoris (Wright, B.H., 1896). — Frierson (1927: 57).
Quadrula (Fusconia [sic]) flava (Rafinesque, 1820). — Frierson (1927: 55).
Quadrula (Fusconia [sic]) flava-nasuta Simpson, 1914. — Frierson (1927: 55).
Quadrula (Fusconia [sic]) flava-negata (Lea, 1861). — Frierson (1927: 55).
Quadrula (Fusconia [sic]) flava-parvula (Grier, 1919). — Frierson (1927: 55).
Quadrula (Fusconia [sic]) flava-sampsoniana Frierson, 1927. — Frierson (1927: 55).
Quadrula (Fusconia [sic]) glandacea (Lea, 1861). — Frierson (1927: 57).
Quadrula (Fusconia [sic]) hebetata (Conrad, 1854). — Frierson (1927: 55).
Quadrula (Fusconia [sic]) kirtlandiana (Lea, 1834). — Frierson (1927: 56).
Quadrula (Fusconia [sic]) lananensis Frierson, 1901. — Frierson (1927: 57).
Quadrula (Fusconia [sic]) ozarkensis (Call, 1887). — Frierson (1927: 57).
Quadrula (Fusconia [sic]) pannosa (Simpson, 1900). — Frierson (1927: 57).
Quadrula (Fusconia [sic]) pilaris (Lea, 1840). — Frierson (1927: 56).
Quadrula (Fusconia [sic]) rubidula Frierson, 1905. — Frierson (1927: 55).
Quadrula (Fusconia [sic]) subelliptica (Simpson, 1900). — Frierson (1927: 57).
Quadrula (Fusconia [sic]) subrotunda (Lea, 1831). — Frierson (1927: 56).
Quadrula (Fusconia [sic]) succissa (Lea, 1852). — Frierson (1927: 57).
Quadrula (Fusconia [sic]) succissa-wrightii Simpson, 1914. — Frierson (1927: 57).
Quadrula (Fusconia [sic]) undata (Barnes, 1823). — Frierson (1927: 54).
Quadrula (Fusconia [sic]) undata-chunii (Lea, 1862). — Frierson (1927: 54).
Quadrula (Fusconia [sic]) undata-selecta (Wheeler, 1914). — Frierson (1927: 55).
Quadrula (Fusconia [sic]) undata-trigona (Lea, 1831). — Frierson (1927: 54).
Quadrula (Fusconia [sic]) undata-trigonoides (Frierson, 1916). — Frierson (1927: 55).
Quadrula (Fusconia [sic]) utterbackii (Frierson, 1916). — Frierson (1927: 57).
Quadrula (Obliquata) catilla (Conrad, 1836). — Frierson (1927: 54).
Quadrula (Obliquata) coccinea (Conrad, 1836). — Frierson (1927: 53).
Quadrula (Obliquata) coccinea-cunea (Conrad, 1838). — Frierson (1927: 53).
Quadrula (Obliquata) coccinea-magnalacustris Simpson, 1914. — Frierson (1927: 53).
Quadrula (Obliquata) cordata (Rafinesque, 1820). — Frierson (1927: 53).
Quadrula (Obliquata) cordata-plena (Lea, 1840). — Frierson (1927: 53).
Quadrula (Obliquata) friersoni (Wright, B.H., 1896). — Frierson (1927: 54).
Quadrula (Obliquata) missouriensis (Marsh, 1901). — Frierson (1927: 54).
Quadrula (Obliquata) obliquata (Rafinesque, 1820). — Frierson (1927: 52).
Quadrula (Obliquata) ridellii [sic] (Lea, 1861). — Frierson (1927: 54).
Quadrula (Orthonymus) cylindrica (Say, 1817). — Frierson (1927: 51).
Quadrula (Orthonymus) cylindrica-strigillata (Wright, B.H., 1898). — Frierson (1927: 51).
Quadrula (Orthonymus) intermedia (Conrad, 1836). — Frierson (1927: 52).
Quadrula (Orthonymus) metanevra (Rafinesque, 1820). — Frierson (1927: 51).
Quadrula (Orthonymus) metanevra-tuberosa (Lea, 1840). — Frierson (1927: 52).
Quadrula (Orthonymus) metanevra-wardii (Lea, 1862). — Frierson (1927: 52).
Quadrula (Orthonymus) stapes (Lea, 1831). — Frierson (1927: 52).
Quadrula (Pleuronaia) analogia [sic] (Ortmann, 1917). — Frierson (1927: 60).
Quadrula (Pleuronaia) argentea (Lea, 1841). — Frierson (1927: 58).
Quadrula (Pleuronaia) barnesiana (Lea, 1838). — Frierson (1927: 58).
Quadrula (Pleuronaia) cor (Conrad, 1834). — Frierson (1927: 59).
Quadrula (Pleuronaia) cuneola (Lea, 1840). — Frierson (1927: 58).
Quadrula (Pleuronaia) dolabelloides (Lea, 1840). — Frierson (1927: 59).
Quadrula (Pleuronaia) georgiana (Lea, 1841). — Frierson (1927: 58).
Quadrula (Pleuronaia) meridithii [sic] (Lea, 1858). — Frierson (1927: 58).
Quadrula (Pleuronaia) munda (Lea, 1857). — Frierson (1927: 60).
Quadrula (Pleuronaia) pudica (Lea, 1860). — Frierson (1927: 58).
Quadrula (Pleuronaia) raveneliana (Lea, 1834). — Frierson (1927: 60).
Quadrula (Pleuronaia) striatissima (Anthony, J.G., 1865). — Frierson (1927: 58).
Quadrula (Pleuronaia) tesserulae (Lea, 1862). — Frierson (1927: 60).
Quadrula (Pleuronaia) tumescens (Lea, 1845). — Frierson (1927: 59).
Quadrula (Pleuronaia) valida (Lea, 1871). — Frierson (1927: 58).
Quadrula (Quincuncina) burkei (Walker, 1922). — Frierson (1927: 50).
Quadrula (Quincuncina) securiformis (Conrad, 1849). — Frierson (1927: 50).
Quadrula (Quincuncina) securiformis-kleiniana (Lea, 1853). — Frierson (1927: 50).
Quadrula (Quincuncina) vittata Frierson, 1927. — Frierson (1927: 50).
Quadrula (s.s.) conjugans (Wright, B.H., 1899). — Frierson (1927: 48).
Quadrula (s.s.) quadrula (Rafinesque, 1820). — Frierson (1927: 47).
Quadrula (s.s.) quadrula-apiculata (Say, 1829). — Frierson (1927: 47).
Quadrula (s.s.) quadrula-aspera (Lea, 1831). — Frierson (1927: 47).
Quadrula (s.s.) quadrula-forsheyi (Lea, 1859). — Frierson (1927: 47).
Quadrula (s.s.) quadrula-fragosa (Conrad, 1836). — Frierson (1927: 47).
Quadrula (s.s.) quadrula-nobilis (Conrad, 1854). — Frierson (1927: 48).
Quadrula (s.s.) quadrula-rumphiana (Lea, 1852). — Frierson (1927: 47).
Quadrula (s.s.) quadrula-speciosa (Lea, 1862). — Frierson (1927: 47).
Quadrula (Striata) striata (Rafinesque, 1820). — Frierson (1927: 50).
Quadrula (Tritogonia) verrucosa (Rafinesque, 1820). — Frierson (1927: 48).
Simpsoniconcha ambigua (Say, 1825). — Frierson (1927: 23).
Strophitus (Jugosus) wrightianus Walker, 1901. — Frierson (1927: 23).
Strophitus (Pseudodontoideus) alabamensis (Lea, 1861). — Frierson (1927: 23).
Strophitus (Pseudodontoideus) gesneri (Lea, 1858). — Frierson (1927: 23).
Strophitus (Pseudodontoideus) spillmani (Lea, 1858). — Frierson (1927: 23).
Strophitus (s.s.) connasaugaensis (Lea, 1858). — Frierson (1927: 23).
Strophitus (s.s.) radiatus (Conrad, 1834). — Frierson (1927: 23).
Strophitus (s.s.) subvexus (Conrad, 1834). — Frierson (1927: 23).
Strophitus (s.s.) undulatus (Say, 1817). — Frierson (1927: 22).
Strophitus (s.s.) undulatus-ovatus Frierson, 1927. — Frierson (1927: 22).
Strophitus (s.s.) undulatus-pennsylvanicus [sic] (Say, 1817). — Frierson (1927: 22).
Strophitus (s.s.) undulatus-rugosus (Swainson, 1822). — Frierson (1927: 22).
Strophitus (s.s.) undulatus-tennesseensis Frierson, 1927. — Frierson (1927: 22).
Strophitus (s.s.) undulatus-virgatus (Conrad, 1836). — Frierson (1927: 22).
Truncilla cognata (Lea, 1860). — Frierson (1927: 89).
Truncilla donaciformis (Lea, 1828). — Frierson (1927: 89).
Truncilla macrodon (Lea, 1859). — Frierson (1927: 89).
Truncilla truncata Rafinesque, 1820. — Frierson (1927: 89).
Truncilla truncata-vermiculata Rafinesque, 1820. — Frierson (1927: 89).
 
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