Unio magnificus Griffith & Pidgeon, 1833
Griffith & Pidgeon, 1833, [in] Cuvier, Animal Kingdom 12(38): pl. 24, fig. 2 [as ‘Unio tenuis’].
‘Lea’ Sowerby, 1867, Conch. Icon. 16: pl. 57, sp. 289.
(misidentified reference to Symphynota magnifica Lea, 1834)

Unio mexicanus Sowerby, 1867
Sowerby, 1867, Conch. Icon. 16: pl. 55, sp. 281.
(homonym of Unio mexicanus Philippi, 1847)
Type(s): HOLOTYPE (MONOTYPY) BMNH_79-2-26-249, Mexico.

Unio gigas Sowerby, 1867
‘Swainson’ Sowerby, 1867, Conch. Icon. 16: pl. 56, sp. 287.
(misidentified reference to Unio gigas Swainson, 1824)
Type(s): MANUSCRIPT NAME BMNH_1968861, River Ohio.

Unio chilensis Sowerby, 1867
‘Parreyss’ Sowerby, 1867, Conch. Icon. 16: pl. 56, sp. 286; errata.
(reference to Unio chilensis Gray, 1828)
Type(s): UNKNOWN BMNH_74-12-11-11, Chili.

Unio dolabraeformis Sowerby, 1867
‘Lea’ Sowerby, 1867, Conch. Icon. 16: pl. 59, sp. 298 [as ‘dolabræformis’].
(misidentified reference to Unio dolabraeformis Lea, 1838)

Unio superbus Sowerby, 1867
‘Lea’ Sowerby, 1867, Conch. Icon. 16: pl. 59, sp. 295.
(reference to Unio superbus Lea, 1843)

Unio subtrigonus Sowerby, 1867
Sowerby, 1867, Conch. Icon. 16: pl. 58, fig. 292; errata [changed to U. cambojensis Petit’].
(homonym of Unio subtrigonus Noulet, 1864; renamed Unio vagulus Fischer, 1891)
Type(s): HOLOTYPE BMNH_1874-12-11-3, Siam.

Unio angasi Sowerby, 1867
‘Lea, MS’ Sowerby, 1867, Conch. Icon. 16: pl. 55, sp. 282.
‘Lea’ Sowerby, 1870, Conch. Icon. 17: pl. 32, sp. 127 [as ‘Anodon angasii’].
Type(s): HOLOTYPE BMNH_70-10-26-41, Strangways River, Arnheim Land, North Australia.

Unio luteolus Sowerby, 1867
‘Lamarck’ Sowerby, 1867, Conch. Icon. 16: pl. 58, fig. 293a. [in part]
(misidentified reference to Unio luteola Lamarck, 1819)

Unio delodontus Sowerby, 1867
‘Lamarck’ Sowerby, 1867, Conch. Icon. 16: pl. 57, sp. 288.
(misidentified reference to Unio delodonta Lamarck, 1819)

Unio vagulus Fischer, 1891
Sowerby, 1867, Conch. Icon. 16: pl. 58, fig. 292 [as ‘Unio subtrigonus’].
Fischer, 1891, Bull. Soc. Hist. Nat. Autun 4: 223.
(new name for Unio subtrigonus Sowerby, 1867)

Unio (Lampsilis) discus var. connectens Martens, 1900
‘von dem Busch’ Küster, 1861, Conchyl. Cab. 9(2): 242, pl. 81, fig. 1 [as ‘Unio panacoensis’].
Sowerby, 1867, Conch. Icon. 16: pl. 55, sp. 281 [as ‘Unio mexicanus’].
Martens, 1900, Biol. Centr.-Amer., Moll.: 510.
(intro'd as intra-sp. of Unio discus Lea, 1838)

Unio angasi ‘Lea, MS’ Sowerby, 1867

Unio cambodjensis (Petit, 1865)

Unio camelus Lea, 1834

Unio cariosus Say, 1817
+ Unio ochraceus Say, 1817

Unio chilensis ‘Parreyss’ Sowerby, 1867

Unio confragosus (Say, 1829)

Unio congaræus Lea, 1831
+ Unio gibber Lea, 1838

Unio cylindricus Say, 1817
+ Unio naviformis Lamarck, 1819

Unio decurvatus Rossmässler, 1835

Unio delodontus Lamarck, 1819
+ Unio lacteolus Lea, 1834

Unio dolabraeformis Lea, 1838
+ Unio excavatus Lea, 1857

Unio evansi Adams & Angas, 1864

Unio funebralis Lea, 1860
+ Unio nocturnis Lea, 1860

Unio gigas Swainson, 1824

Unio jayensis Lea, 1838
+ Unio aquilus Lea, 1857
+ Unio maconensis Lea, 1857
+ Unio naviculoides Lea, 1857

Unio luteolus Lamarck, 1819
+ Unio siliquoideus Barnes, 1823
+ Unio inflatus Barnes, 1823
+ Unio lienosus Conrad, 1834

Unio magnificus (Lea, 1834)

Unio marginalis Lamarck, 1819

Unio mexicanus Sowerby, 1867

Unio rugosus (Barnes, 1823)
+ Alasmodonta abducta Lea, 1836

Unio stuarti Adams & Angas, 1863

Unio superbus Lea, 1841

Unio tampicoensis Lea, 1838
+ Unio tecomatensis Lea, 1841