Anodonta vignonana Musgrave, 1863
‘Bernardi’ of Authors.
Musgrave, 1863. Phot. Conch. of Conch. Misc. Hanley: pl. 1, fig. 1.
Reeve, 1865. Conch. Icon. 16: pl. 25, sp. 120; errata [changed to ‘vignouanus’].
Sowerby, 1870. Conch. Icon. 17: pl. 29, sp. 116.
Ancey, 1888. Bull. Soc. Malac. France 5: 74, footnote.
(error for Margaritana vignouana Bernardi, 1859)

Lampsilis (Proptera) lividus Simpson, 1900
‘Morelet’ Reeve, 1865. Conch. Icon. 16: pl. 22, sp. 101 [as ‘Unio testudineus’].
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 571.
Simpson, 1914. Descr. Cat. Naiades: 174.
Type(s): HOLOTYPE (MONOTYPY) BMNH_20190695 (by Cummings et al., 2025: 198), Rio Usumacinta, Guatemala.

Margaron (Unio) versus Lea, 1870
‘Lea’ Reeve, 1865. Conch. Icon. 16: pl. 29, sp. 147 [as ‘Unio inornatus’].
Lea, 1870. Synopsis Fam. Naiades: 46.

Mya elongata Reeve, 1865
‘Wood’ Reeve, 1865. Conch. Icon. 16: pl. 137, sp. 139.
(error for Unio oblongatus Wood, 1828)

Quadrula (Quincuncina) vittata Frierson, 1927
‘Lamarck’ Reeve, 1865. Conch. Icon. 16: pl. 23, sp. 106 [as ‘Unio rotundatus’].
Frierson, 1927. Check List N. Amer. Naiades: 50, sp. 218.

Trapezoideus peninsularis Simpson, 1900
‘Lea’ Reeve, 1865. Conch. Icon. 16: pl. 28, sp. 142 [as ‘Unio sumatrensis’].
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 859, footnote.
Simpson, 1914. Descr. Cat. Naiades: 1186.
Type(s): TYPE BMNH_1964159, Sumatra.

Unio aereus Reeve, 1865
Reeve, 1865. Conch. Icon. 16: pl. 30, sp. 160.
Type(s): TYPE LOST XXX_UNKNOWN, unknown.

Unio altilis Reeve, 1865
‘Conrad’ Reeve, 1865. Conch. Icon. 16: pl. 23, sp. 109.
(misidentified reference to Unio altilis Conrad, 1834)

Unio anodontoides Reeve, 1865
‘Lea’ Reeve, 1865. Conch. Icon. 16: pl. 21, fig. 97.
(reference to Unio anodontoides Lea, 1831)

Unio aplatus Reeve, 1865
‘Swainson ms’ Reeve, 1865. Conch. Icon. 16: pl. 28, sp. 143.

Unio ater Reeve, 1865
‘Nilsson’ Reeve, 1865. Conch. Icon. 16: pl. 21, fig. 91.
(misidentified reference to Unio ater Nilsson, 1822)

Unio aucklandicus Reeve, 1865
‘Gray’ Reeve, 1865. Conch. Icon. 16: pl. 30, sp. 156.
(misidentified reference to Unio aucklandicus Gray, 1843)

Unio auratus Lea, 1838
‘Swainson’ of Authors.
Lea, 1838. Synopsis Fam. Naiades: 22.
Hanley, 1843. Illustr. Descr. Cat. Rec. Bivalve Shells: 199 [as ‘Naia aurata’].
‘Swain.’ Lea, 1852. Synopsis Fam. Naiades: 33 [as ‘Niäa aurata’].
‘Swainson MS’ Reeve, 1865. Conch. Icon. 16: pl. 29, sp. 150.
(reference to Unio auratus Philippi, 1847)
Type(s): FIGURED SPECIMEN BMNH_1965144, I. of Chiloe.

Unio bicaelatus Reeve, 1865
Reeve, 1865. Conch. Icon. 16: pl. 26, sp. 130 [as ‘bi-cælatus’].

Unio coccineus Reeve, 1865
‘Lea’ Reeve, 1865. Conch. Icon. 16: pl. 22, sp. 104.
(misidentified reference to Unio coccineus Lea, 1838)

Unio cocoduensis Reeve, 1865
‘White MS’ Reeve, 1865. Conch. Icon. 16: pl. 24, sp. 117.
Type(s): HOLOTYPE BMNH_1965187, Hab._?

Unio crassus Reeve, 1865
Vallot 1801 of Authors.
‘Retz.’ Reeve, 1865. Conch. Icon. 16: pl. 22, sp. 98 [as syn. under U. littoralis].
(misidentified reference to Unio crassus Retzius, 1788)

Unio cuneolus Küster, 1861
‘Lea’ of Authors.
Küster, 1861. Conchyl. Cab. 9(2): 182, pl. 57, fig. 4.
Reeve, 1865. Conch. Icon. 16: pl. 23, sp. 107.
(reference to Unio cuneolus Lea, 1840)

Unio dembeae Reeve, 1865
‘Rossmässler MS’ Reeve, 1865. Conch. Icon. 16: pl. 29, sp. 153 [as ‘dembeæ’].

Unio electrinus Reeve, 1865
Reeve, 1865. Conch. Icon. 16: pl. 25, sp. 121.

Unio flavidens Reeve, 1865
‘Benson’ of Authors.
Reeve, 1865. Conch. Icon. 16: pl. 26, sp. 131; errata [changed to ‘favidens’].
Paetel, 1890. Cat. Conch.-Samml. 3: 152.
(error for Unio favidens Benson, 1862)

Unio fragilis Reeve, 1865
‘Swainson MS’ Reeve, 1865. Conch. Icon. 16: pl. 30, sp. 155.
(renamed Diplodon (Dipldon) cuprinus Simpson, 1900; homonym of Unio (Leptodea) fragilis Rafinesque, 1820)
Type(s): HOLOTYPE BMNH_MP_365, Id. of Chiloe, Chile.

Unio fuligo Reeve, 1865
Reeve, 1865. Conch. Icon. 16: pl. 30, sp. 159.

Unio fuscatus Reeve, 1865
‘Lea’ Reeve, 1865. Conch. Icon. 16: pl. 21, sp. 95.
(misidentified reference to Unio fuscatus Lea, 1843)

Unio globulus Ferussac, 1835
‘Say’ of Authors.
Ferussac, 1835. Mag. Zool. 5(59-60): 26.
Reeve, 1865. Conch. Icon. 16: pl. 23, sp. 106.
(error for Unio glebulus Say, 1831)

Unio gubernaculum Reeve, 1865
Reeve, 1865. Conch. Icon. 16: pl. 28, sp. 146.
Type(s): HOLOTYPE BMNH_1965203, Hab._?

Unio inornatus Reeve, 1865
‘Lea’ Reeve, 1865. Conch. Icon. 16: pl. 29, sp. 147; errata.
(misidentified reference to Unio inornatus Lea, 1856)

Unio litoralis Menke, 1828
‘Lamarck’ of Authors.
Menke, 1828. Syn. Method. Moll.: 64.
Menke, 1830. Syn. Method. Moll.: 107.
Lea, 1836. Synopsis Fam. Naiades: 32.
Lea, 1838. Synopsis Fam. Naiades: 22.
Swainson, 1840. Treat. Malacol.: 282.
Lea, 1852. Synopsis Fam. Naiades: 34.
Rossmässler, 1854. Icon. Land- und Süssw.-Moll. 3 (1-2): 37.
Küster, 1855. Conchyl. Cab. 9(2): 128.
Reeve, 1865. Conch. Icon. 16: pl. 22, sp. 98.
Sowerby, 1868. Conch. Icon. 16: pl. 86, sp. 461.
Lea, 1870. Synopsis Fam. Naiades: 54.
Woodward, 1871. Man. Moll: 433.
Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 52.
(error for Unio littoralis Cuvier, 1798)

Unio lutulentus Reeve, 1865
‘Gould’ Reeve, 1865. Conch. Icon. 16: pl. 25, sp. 122.
(misidentified reference to Unio lutulentus Gould, 1850)

Unio menziesianus Reeve, 1865
‘Gray’ Reeve, 1865. Conch. Icon. 16: pl. 29, sp. 152.
(error for Unio menziesii Gray, 1843)

Unio merdiger Reeve, 1865
Jay, 1839. Cat. Rec. Shells: 25, sp. 1065.
‘Walsh.’ Lea, 1852. Synopsis Fam. Naiades: ??. [nomen nudum]
‘Watts’ Reeve, 1865. Conch. Icon. 16: pl. 28, sp. 145.

Unio moretonicus Reeve, 1865
Reeve, 1865. Conch. Icon. 16: pl. 24, sp. 118.
Type(s): FIGURED SYNTYPE BMNH_1958-5-16-1, Moreton Bay, Australia.

Unio mutabilis Reeve, 1865
‘Lea’ Reeve, 1865. Conch. Icon. 16: pl. 24, sp. 112.
(reference to Unio mutabilis Lea, 1859)

Unio obliquiradiatus Reeve, 1865
Reeve, 1865. Conch. Icon. 16: pl. 29, sp. 151.

Unio patagonicus Reeve, 1865
‘d’Orbigny’ Reeve, 1865. Conch. Icon. 16: pl. 21, sp. 93.
(reference to Unio patagonica d’Orbigny, 1835)

Unio pictorum Guérin-Méneville, 1823
‘Linnaeus’ of Authors.
Guérin-Méneville, 1823. Icon. Règne Animal Cuvier 2: pl. 28, fig. 16.
Reeve, 1865. Conch. Icon. 16: pl. 25, sp. 123.
(misidentified reference to Mya pictorum Linnaeus, 1758)

Unio pilaris Reeve, 1865
‘Lea’ Reeve, 1865. Conch. Icon. 16: pl. 27, sp. 138.
(misidentified reference to Unio pilaris Lea, 1840)

Unio rotundatus Reeve, 1865
‘Lamarck’ Reeve, 1865. Conch. Icon. 16: pl. 23, sp. 106.
(reference to Unio rotundata Lamarck, 1819)

Unio sumatrensis Reeve, 1865
‘Lea’ Reeve, 1865. Conch. Icon. 16: pl. 28, sp. 142.
(reference to Unio sumatrensis Lea, 1859)

Unio testudineus Reeve, 1865
‘Morelet’ Reeve, 1865. Conch. Icon. 16: pl. 22, sp. 101.
(misidentified reference to Unio testudineus Morelet, 1849)
Type(s): FIGURED SPECIMEN BMNH_20190695, Rio Usumacinta, Guatemala.

Unio vellicatus Reeve, 1865
Reeve, 1865. Conch. Icon. 16: pl. 22, sp. 103.
Type(s): TYPE LOST XXX_UNKNOWN, Guatemala.

Unio virginana Reeve, 1865
‘Lamarck’ of Authors.
Reeve, 1865. Conch. Icon. 16: pl. 27, sp. 139.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 536.
(misidentified reference to Unio virginiana Lamarck, 1819)