Unio oviformis Conrad, 1834
Conrad, 1834, New Fresh-Water Shells: 46, pl. 3, fig. 6.
Conrad, 1853, Proc. Acad. Nat. Sci. 6: 254.

Unio ravenelianus Lea, 1834
Lea, 1834, Trans. Amer. Phil. Soc. 5 [O. 1]: 32 [144], pl. 3, fig. 5.
(renamed Unio rudis Conrad, 1837)
Type(s): HOLOTYPE USNM_84783, French Broad R., near Ashville, N. Carolina.

Unio rudis Conrad, 1837
Conrad, 1837, Monogr. Fam. Unionidae 1(8): 76, pl. 43, fig. 1.
Conrad, 1853, Proc. Acad. Nat. Sci. 6: 257.
(new name for Unio ravenelianus Lea, 1834)

Unio patulus Conrad, 1838
‘Lea’ Conrad, 1838, Monogr. Fam. Unionidae 1(10): 92, pl. 50, fig. 2.
(misidentified reference to Unio patulus Lea, 1829)

Unio holstonensis Lea, 1840
Lea, 1840, Proc. Amer. Phil. Soc. 1: 288.
Lea, 1842, Trans. Amer. Phil. Soc. 8 [O. 3]: 212 [50], pl. 15, fig. 27.
Type(s): HOLOTYPE USNM_84641, Holston R., Tenn.

Unio argenteus Lea, 1841
Lea, 1841, Proc. Amer. Phil. Soc. 2: 82.
Lea, 1842, Trans. Amer. Phil. Soc. 8 [O. 3]: 242 [80], pl. 25, fig. 57.
Type(s): HOLOTYPE USNM_84778, Holston R., Tenn.

Unio decisus Küster, 1852
‘Lea’ Küster, 1852, Conchyl. Cab. 9(2): 41, pl. 8, fig. 1. [in part]
(misidentified reference to Unio decisus Lea, 1831)

Unio mundus Lea, 1857
Lea, 1857, Proc. Acad. Nat. Sci. 9: 83.
Lea, 1866, Jour. Acad. Nat. Sci. 6 [O. 11]: 40 [44], pl. 14, fig. 38.
Type(s): HOLOTYPE USNM_84767, Tuscumbia, Ala.

Unio lesleyi Lea, 1860
Lea, 1860, Proc. Acad. Nat. Sci. 12: 306.
Lea, 1860, Jour. Acad. Nat. Sci. 4 [O. 8]: 352, pl. 58, fig. 177.
Type(s): HOLOTYPE USNM_84759, Kentucky.

Unio tesserulae Lea, 1862
Lea, 1862, Proc. Acad. Nat. Sci. 13: 392 [as ‘tesserulæ’].
Lea, 1866, Jour. Acad. Nat. Sci. 6 [O. 11]: 40 [44], pl. 15, fig. 39 [as ‘tesserulæ’].
Type(s): HOLOTYPE USNM_84426, Nolachucky R., Tenn.

Unio striatissimus J.G. Anthony, 1865
J.G. Anthony, 1865, Amer. J. Conch. 1(2): 156, pl. 12, fig. 1.

Unio clinchensis Lea, 1867
Lea, 1867, Proc. Acad. Nat. Sci. 19: 81.
Lea, 1868, Jour. Acad. Nat. Sci. 6 [O. 12]: 278 [38], pl. 37, fig. 91.
Type(s): HOLOTYPE USNM_84596, Clinch R., Tenn.

Unio planior Lea, 1868
Lea, 1868, Proc. Acad. Nat. Sci. 20: 145.
Lea, 1868, Jour. Acad. Nat. Sci. 6 [O. 12]: 316 [76], pl. 50, fig. 129.
Type(s): HOLOTYPE USNM_84391, Tennessee.

Unio acuens Lea, 1871
Lea, 1871, Proc. Acad. Nat. Sci. 23: 190.
Lea, 1874, Jour. Acad. Nat. Sci. 8 [O. 13]: 27 [31], pl. 8, fig. 24.
Type(s): HOLOTYPE USNM_84599, Holston R., near Concord, E. Tenn.

Unio lawi Lea, 1871
Lea, 1871, Proc. Acad. Nat. Sci. 23: 189.
Lea, 1874, Jour. Acad. Nat. Sci. 8 [O. 13]: 8 [12], pl. 2, fig. 4.
Type(s): HOLOTYPE USNM_84757, Holston R., Tenn.

Unio pattinoides Lea, 1871
Lea, 1871, Proc. Acad. Nat. Sci. 23: 193.
Lea, 1874, Jour. Acad. Nat. Sci. 8 [O. 13]: 16 [20], pl. 4, fig. 12.
Type(s): HOLOTYPE USNM_84763, Holston R., Tenn.

Unio bellulus Lea, 1872
Lea, 1872, Proc. Acad. Nat. Sci. 24: 161.
Lea, 1874, Jour. Acad. Nat. Sci. 8 [O. 13]: 50 [54], pl. 17, fig. 48.
Type(s): HOLOTYPE USNM_84772, Mussel Shoals, Tenn R., Alabama.

Unio brevis Lea, 1872
Lea, 1872, Proc. Acad. Nat. Sci. 24: 157.
Lea, 1874, Jour. Acad. Nat. Sci. 8 [O. 13]: 35 [39], pl. 12, fig. 32.
Type(s): HOLOTYPE USNM_84546, Conasauga R., E. Tenn.

Unio conasaugaensis Lea, 1872
Lea, 1872, Proc. Acad. Nat. Sci. 24: 155.
Lea, 1874, Jour. Acad. Nat. Sci. 8 [O. 13]: 33 [37], pl. 10, fig. 30.
Type(s): HOLOTYPE USNM_85565, Conasauga Cr., Monroe Co., E. Tenn.

Unio clavus Call, 1885
‘Lamarck’ Call, 1885, unknown publication: ??.
(misidentified reference to Unio clava Lamarck, 1819)

Unio accuens Paetel, 1890
‘Lea’ Paetel, 1890, Cat. Conch.-Samml. 3: 143.
(error for Unio acuens Lea, 1871)

Unio swordianus S.H. Wright, 1897
S.H. Wright, 1897, Nautilus 11: 4.
Type(s): LECTOTYPE USNM_149654, Br. of Clinch River, Va.

Pleurobema swordiana Simpson, 1900
‘Wright’ Simpson, 1900, Proc. Acad. Nat. Sci. 52: 81, pl. 4, fig. 4.
(reference to Unio swordianus S.H. Wright, 1897)

Pleurobema fassinans Ortmann, 1913
‘Lea’ Ortmann, 1913, Proc. Amer. Phil. Soc. 52(210): 310.
(misidentified reference to Unio fassinans Lea, 1868)