Alasmodonta radiata Conrad, 1834
Conrad, 1834. Amer. J. Sci. 25(2): 341, pl. 1, fig. 10.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 263 [as ‘Strophitus radiatus’].
Type(s): LECTOTYPE ANSP_41147, Greene Co., Ala.

Alasmodonta truncata Lea, 1836
‘Say, in lit.’ of Authors.
Lea, 1836. Synopsis Fam. Naiades: 44.
Lea, 1838. Synopsis Fam. Naiades: 27.
Agassiz, 1852. Arch. Naturg. 18(1): 46.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 262.
(intro'd as syn of Alasmidonta marginata Say, 1818)

Anodonta declivis Conrad, 1834
Conrad, 1834. Amer. J. Sci. 25(2): 341, pl. 1, fig. 11.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 263.

Anodonta harpenthis Conrad, 1853
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 264.
(error for Anodonta harpethensis Lea, 1840)

Anodonta imbecilis Lea, 1836
‘Say’ of Authors.
Lea, 1836. Synopsis Fam. Naiades: 54.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 264.
Adams & Adams, 1857. Gen. Rec. Moll. 2(31-32): 502.
Say, 1858. [in] Binney, Compl. Writings T. Say: 140.
Lapham, 1860. Proc. Acad. Nat. Sci. 12: 156.
B.H. Wright, 1888. Check List N. Amer. Unionidae etc.: [7].
Pilsbry & Rhoads, 1896. Proc. Acad. Nat. Sci. 48: 506.
Clench & Turner, 1956. Bull. Fla. State Mus. 1: 187.
Murray & Leonard, 1962. Handbk. Unionid Muss. Kansas: 95.
R.I. Johnson, 1970. Bull. MCZ 140(6): 362.
Heard, 1975. Malacologia 15(1): 84.
Kat, 1983. Malacologia 23(2): 362.
Hoeh, 1990. Malac. Review 23: 63.
Lydeard et al., 1996. Philos. Trans. Roy. Soc. London (B, Biol. Sci.) 351: 1595.
Rosenberg et al., 1997. J. Moll. Studies 63: 303.
Adamkewicz et al., 1997. MBE 14(6): 622.
(error for Anodonta imbecillis Say, 1829)

Anodonta linneana Conrad, 1853
‘Lea’ of Authors.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 264.
Hanley, 1856. Cat. Rec. Bivalve Shells, Suppl.: 387.
Sowerby, 1870. Conch. Icon. 17: pl. 35, sp. 144.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 646.
Simpson, 1914. Descr. Cat. Naiades: 431.
Frierson, 1927. Check List N. Amer. Naiades: 14.
Haas, 1969. Das Tierreich 88: 364.
Parmalee & Bogan, 1998. The Freshwater Mussels of Tennessee: 206.
Watters et al., 2009. Freshw. Mussels OH: 260.
(error for Anodonta linnaeana Lea, 1852)

Anodonta marryattana Conrad, 1853
‘Lea’ of Authors.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 264.
Sowerby, 1870. Conch. Icon. 17: pl. 28, sp. 111.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 642.
Simpson, 1914. Descr. Cat. Naiades: 422.
F.C. Baker, 1928. Bull. Wisconsin Geol. Nat. Hist. Survey 70(2): 157.
Haas, 1969. Das Tierreich 88: 365.
(error for Anodonta maryattana Lea, 1840)

Anodonta pennsylvanica Stark, 1828
‘Lamarck’ of Authors.
Stark, 1828. Elements Nat. Hist. 2: 89.
Lea, 1836. Synopsis Fam. Naiades: 50.
Lea, 1838. Synopsis Fam. Naiades: 30.
Lea, 1852. Synopsis Fam. Naiades: 49.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 263.
Sowerby, 1867. Conch. Icon. 17: pl. 11, sp. 30.
Lea, 1870. Synopsis Fam. Naiades: 79.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 618.
Ortmann & Walker, 1922. Occ. Pap. Mus. Zool. Univ. Mich. (112): 40.
Frierson, 1927. Check List N. Amer. Naiades: 22 [as ‘Strophitus undulatus-pennsylvanicus’].
Haas, 1969. Das Tierreich 88: 373 [as ‘Strophitus undulatus pennsylvanicus’].
(error for Anodonta pensylvanica Lamarck, 1819)

Anodonta subvexa Conrad, 1834
Conrad, 1834. Amer. J. Sci. 25(2): 341, pl. 1, fig. 1.
Conrad, 1834. New Fresh-Water Shells: 73.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 264.

Anodonta teres Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 47, pl. 7, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 264.

Anodonta virgata Conrad, 1836
Conrad, 1836. Monogr. Fam. Unionidae 1(5): back cover.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 263 [as ‘Strophitus virgatus’].

Margaritana curreyana Lea, 1842
‘Lea’ of Authors.
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: pl. 18, fig. 40.
Agassiz, 1852. Arch. Naturg. 18(1): 47.
Lea, 1852. Synopsis Fam. Naiades: 42.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 263.
Adams & Adams, 1857. Gen. Rec. Moll. 2(31-32): 499.
Sowerby, 1868. Conch. Icon. 16: pl. 63, sp. 319.
Lea, 1870. Synopsis Fam. Naiades: 68.
B.H. Wright, 1888. Check List N. Amer. Unionidae etc.: [6].
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 661.
Simpson, 1914. Descr. Cat. Naiades: 474.
Frierson, 1927. Check List N. Amer. Naiades: 21.
Haas, 1969. Das Tierreich 88: 395.
(error for Margaritana curreyiana Lea, 1840)

Margaritana etowaensis Conrad, 1849
Conrad, 1849. Proc. Acad. Nat. Sci. 4: 154 [as ‘etowænsis’].
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 263 [as ‘Strophitus etowaosis’].

Monodontina buschiana Conrad, 1853
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 269.
(new name for Margaritana vondembuschiana Lea, 1840)

Mytilus fluviatilus Conrad, 1853
‘Lister’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.
(error for Mytilus fluviatilis Gmelin, 1791)

Plectomerus boykianus Conrad, 1853
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 260.
(error for Unio boykinianus Lea, 1840)

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. 6: 256.
Adams & Adams, 1857. Gen. Rec. Moll. 2(31-32): 497.
Reeve, 1864. Conch. Icon. 16: pl. 9, sp. 33.
Call, 1895. Trans. Acad. Sci. St. Louis 7: 21.
F.C. Baker, 1898. Bull. Chicago Acad. Sci. 3(1): 83, pl. 25, fig. 1; pl. 12, fig. 2.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 776.
Call, 1900. Ind. Dept. Geol. Nat. Res. (1899): 489.
Ortmann, 1909. Nautilus 22(10): 100.
Ortmann, 1909. Ann. Carnegie Mus. 5: 199.
Ortmann, 1910. Nautilus 23(11): 140.
Ortmann, 1910. Nautilus 23: 116.
Ortmann, 1912. Ann. Carnegie Mus. 8: 253.
Simpson, 1914. Descr. Cat. Naiades: 839, 841.
Vanatta, 1915. Proc. Acad. Nat. Sci. 67: 556.
Ortmann & Walker, 1922. Occ. Pap. Mus. Zool. Univ. Mich. (112): 14, 16.
Frierson, 1927. Check List N. Amer. Naiades: 47.
F.C. Baker, 1928. Bull. Wisconsin Geol. Nat. Hist. Survey 70(2): 84.
R.I. Johnson, 1980. Bull. MCZ 149(2): 90.
Vidrine, 1993. Histr. Distr. Freshw. Mussels LA: 53.
Strayer & Jirka, 1997. Pearly Mussels NY (26): 98.
(error for Unio lacrymosus Lea, 1828)

Strophitus etowaosis Conrad, 1853
‘Con.’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 263.
(error for Margaritana etowaensis Conrad, 1849)

Unio aberti Conrad, 1850
Conrad, 1850. Proc. Acad. Nat. Sci. 5: 10.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 244.
Conrad, 1854. Jour. Acad. Nat. Sci. 2(4): 295, pl. 26, fig. 1.

Unio alabamensis Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 67.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 260.
(new name for Symphynota inflata Lea, 1831)

Unio altilis Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 43, pl. 2, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 244.
Type(s): HOLOTYPE ANSP_56419, Ogeechee R., Ga.

Unio arctatus Conrad, 1834
Conrad, 1834. Amer. J. Sci. 25(2): 340, pl. 1, fig. 9.
Conrad, 1834. New Fresh-Water Shells: 36, pl. 5, fig. 4.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 245.

Unio arcus Conrad, 1834
Conrad, 1834. Amer. J. Sci. 25(2): 340, pl. 1, fig. 8.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 245.
Type(s): HOLOTYPE ANSP_56784, Alabama.

Unio caelatus Conrad, 1834
Conrad, 1834. Amer. J. Sci. 25(2): 338, pl. 1, fig. 1 [as ‘cœlatus’].
Conrad, 1834. New Fresh-Water Shells: 29, pl. 3, fig. 4 [as ‘cælatus’].
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 245 [as ‘cælatus’].
(correct name for Unio coelatus Conrad, 1834)

Unio carolinanus Conrad, 1853
‘Bosc’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 246.
(error for Unio caroliniana Bosc, 1801)

Unio catillus Conrad, 1836
Conrad, 1836. Monogr. Fam. Unionidae 1(3): 30, pl. 13, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 246.

Unio cerinus Conrad, 1838
Conrad, 1838. Monogr. Fam. Unionidae 2(11): 95, pl. 52.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 246.
Type(s): LECTOTYPE ANSP_41644, New Orleans, La.

Unio coccineus Conrad, 1836
‘Hildreth’ Conrad, 1836. Monogr. Fam. Unionidae 1(3): 29, pl. 13, fig. 1.
‘Hildreth’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 247.
Type(s): FIGURED SYNTYPE USNM_85848, Columbus, Ohio.

Unio collinus Conrad, 1837
Conrad, 1837. Monogr. Fam. Unionidae 1(8): 65, pl. 36, fig. 2.
Conrad, 1840. Monogr. Fam. Unionidae 2(12): 109, pl. 60, figs. 3.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 247.
Type(s): LECTOTYPE ANSP_41007, Rockbridge Co., Va.

Unio contrarius Conrad, 1849
Conrad, 1849. Proc. Acad. Nat. Sci. 4: 153.
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 276, pl. 37, fig. 7.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 247.

Unio cor Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 28, pl. 3, fig. 3.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 247.
Type(s): FIGURED SYNTYPE MCZ_178792, Elk and Flint Rivers, Alabama.

Unio delumbis Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 35, pl. 5, fig. 3.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 248.

Unio eastbrookianus Conrad, 1853
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 248.
(error for Unio estabrookianus Lea, 1845)

Unio egyptiaca Deshayes, 1832
‘Cailliaud’ of Authors.
Deshayes, 1832. Enc. Méth. 2 (Deuxième partie): 587.
Jay, 1836. Cat. Rec. Shells: 20 [as ‘egyptiacus’].
Lea, 1836. Synopsis Fam. Naiades: 29.
Lea, 1838. Synopsis Fam. Naiades: 21 [as ‘egyptiacus’].
Hanley, 1843. Illustr. Descr. Cat. Rec. Bivalve Shells: 198 [as ‘egyptiacus’].
Lea, 1852. Synopsis Fam. Naiades: 32 [as ‘Margaron (Unio) egyptiacus’].
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 267 [as ‘egyptiacus’].
Adams & Adams, 1857. Gen. Rec. Moll. 2(31-32): 494 [as ‘egyptiacus’].
Lea, 1870. Synopsis Fam. Naiades: 50.
Haas, 1940. Zool. Ser. Field Mus. Nat. Hist. 24: 140 [as ‘Caelatura egyptiaca’].
Araujo et al., 2017. Zool. J. Linn. Soc. 179(2): 280.
(error for Unio aegyptiacus Cailliaud, 1827)

Unio excultus Conrad, 1838
Conrad, 1838. Monogr. Fam. Unionidae 2(11): 99, pl. 55, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 249.

Unio fasciatus Conrad, 1835
‘Raf.’ Conrad, 1835. Monogr. Fam. Unionidae 1(1): 3, pl. 1.
‘Raf.’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 249.
(reference to Unio (Elliptio) fasciata Rafinesque, 1820)

Unio fasciolus Conrad, 1853
‘Raf.’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 249.
(misidentified reference to Lampsilis fasciola Rafinesque, 1820)

Unio fragosus Conrad, 1835
Conrad, 1835. Monogr. Fam. Unionidae 1(1): 12, pl. 6, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 249.

Unio furvus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 39, pl. 6, fig. 3.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 250.

Unio greenii Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 32, pl. 4, fig. 1.
Conrad, 1837. Monogr. Fam. Unionidae 1(8): 69, pl. 38, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 250.
Type(s): SYNTYPE USNM_84950, [Black Warrior River] Alabama.

Unio hanleyanus Conrad, 1853
‘Lea’ of Authors.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 250.
Sowerby, 1866. Conch. Icon. 16: pl. 46, sp. 249.
B.H. Wright, 1888. Check List N. Amer. Unionidae etc.: [3].
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 759.
Simpson, 1914. Descr. Cat. Naiades: 780.
Frierson, 1927. Check List N. Amer. Naiades: 42, sp. 175.
Haas, 1969. Das Tierreich 88: 256.
Burch, 1975. Freshw. Unio. North Amer.: 13.
Turgeon et al., 1988. Am. Fisher. Soc. Spec. Publ. (16): 32.
Williams et al., 1993. Fisheries 18(9): 13.
Parmalee & Bogan, 1998. The Freshwater Mussels of Tennessee: 184.
Lydeard et al., 1999. Gulf Mex. Sci. 17(2): 129.
(error for Unio hanleyianus Lea, 1852)

Unio hayesianus Conrad, 1853
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 250.
(error for Unio haysianus Lea, 1834)

Unio hippopaeus Lea, 1852
‘Lea’ of Authors.
Lea, 1852. Synopsis Fam. Naiades: 21 [as ‘hippopæus’].
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 261 [as ‘hippopæus’].
Adams & Adams, 1857. Gen. Rec. Moll. 2(31-32): 497 [as ‘hippopæus’].
Reeve, 1864. Conch. Icon. 16: pl. 11, sp. 40 [as ‘hippopæus’].
Lea, 1870. Synopsis Fam. Naiades: 31 [as ‘hippopæus’].
B.H. Wright, 1888. Check List N. Amer. Unionidae etc.: [3], [as ‘hippopæus’].
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 767 [as ‘hippopæa’].
Ortmann, 1909. Nautilus 22(10): 101 [as ‘Q. hippopæa’].
Ortmann, 1909. Ann. Carnegie Mus. 5: 203 [as ‘Quadrula undulata hippopæa’].
Simpson, 1914. Descr. Cat. Naiades: 816 [as ‘hippopæa’].
Frierson, 1927. Check List N. Amer. Naiades: 61.
Haas, 1969. Das Tierreich 88: 287.
Clarke, 1973. Malacologia 13(1-2): 35.
Burch, 1975. Freshw. Unio. North Amer.: 165.
Strayer & Jirka, 1997. Pearly Mussels NY (26): 98.
He & Zhuang, 2013. Freshwater Bivalves China: 27.
(error for Unio hippopoeus Lea, 1845)

Unio icterinus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 41, pl. 6, fig. 5.
Conrad, 1836. Monogr. Fam. Unionidae 1(4): 39, pl. 18, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 250.
Type(s): HOLOTYPE ANSP_41381, muddy shore, Savannah River, opposite Augusta [Richmond Co.], Georgia.

Unio infucatus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 45, pl. 3, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 250.

Unio intermedius Conrad, 1836
Conrad, 1836. Monogr. Fam. Unionidae 1(7): 63, pl. 35, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 250.
Type(s): LECTOTYPE ANSP_41606, Nolachucky R., Tenn.

Unio laevigatus Say, 1834
‘Rafinesque’ of Authors.
Say, 1834. Amer. Conch. 6: [no pagination].
Conrad, 1834. New Fresh-Water Shells: 70.
Ferussac, 1835. Mag. Zool. 5: 28.
Lea, 1836. Synopsis Fam. Naiades: 59.
Lea, 1852. Synopsis Fam. Naiades: 57.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 251.
Ortmann, 1921. Mem. Carnegie Mus. 8: 92.
(error for Unio (Aximedia) levigata Rafinesque, 1820)

Unio latiradiatus Conrad, 1838
Conrad, 1838. Monogr. Fam. Unionidae 2(11): 96, pl. 53.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 251.
(new name for Unio interruptus Lea, 1838)

Unio leseurianus Conrad, 1853
‘Lea’ of Authors.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 251.
Frierson, 1927. Check List N. Amer. Naiades: 56.
(error for Unio lesueurianus Lea, 1840)

Unio lienosus Conrad, 1834
Conrad, 1834. Amer. J. Sci. 25(2): 339, pl. 1, fig. 4.
Conrad, 1836. Monogr. Fam. Unionidae 1(7): 60, pl. 34, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 251.
Type(s): HOLOTYPE ANSP_9747, Alabama R., Ala.

Unio ligamentinus Deshayes, 1835
Deshayes, 1835. Hist. Natur. Anim. sans Vert. 6: ??.
‘Lamarck’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 251. [in part]
(misidentified reference to Unio ligamentina Lamarck, 1819)

Unio limatulus Conrad, 1849
Conrad, 1849. Proc. Acad. Nat. Sci. 4: 154.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 251.

Unio maculatus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 30, pl. 4, fig. 4.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.
(homonym of Unio (Elliptio) nigra var. maculata Rafinesque, 1820; renamed Pleurobema conradi Vanatta, 1915)

Unio masoni Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 34, pl. 5, fig. 2.
Conrad, 1836. Monogr. Fam. Unionidae 1(3): 28, pl. 12, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.

Unio metaneurus Herrmannsen, 1849
‘Rafinesque’ of Authors.
Herrmannsen, 1849. Ind. Gener. Malacol. 2: 571.
Küster, 1852. Conchyl. Cab. 9(2): 50.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.
Thiele, 1934. Handb. Syst. Weichtierk. 3: 826 [1260] [as ‘Quadrula (Theliderma) metaneura’].
(error for Obliquaria (Quadrula) metanevra Rafinesque, 1820)

Unio metanever Lea, 1829
‘Rafinesque’ of Authors.
Lea, 1829. Trans. Amer. Phil. Soc. 3 [O. 1]: 418.
Jay, 1835. Cat. Rec. Shells: 17.
Hanley, 1843. Illustr. Descr. Cat. Rec. Bivalve Shells: 179.
Agassiz, 1852. Arch. Naturg. 18(1): 48.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.
Mörch, 1853. Cat. Conch. Yoldi 2: 44.
Lewis, 1871. Amer. J. Conch. 6: 218.
Lea, 1871. Proc. Acad. Nat. Sci. 23: 15 [as ‘Margarita (Unio) metanever’].
(reference to Obliquaria (Quadrula) metanevra Rafinesque, 1820)

Unio mississippiensis Conrad, 1850
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 277, pl. 38, fig. 11.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.
Type(s): HOLOTYPE MCZ_178777, Tributary of the Lower Mississippi, Louisiana.

Unio modioliformis Lea, 1834
‘Say’ of Authors.
Lea, 1834. Trans. Amer. Phil. Soc. 5 [O. 1]: 89.
Conrad, 1835. Monogr. Fam. Unionidae 1(1): 5.
Ferussac, 1835. Mag. Zool. 5: 28.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 246.
(intro'd as syn of Unio clava Lamarck, 1819)

Unio mortoni Conrad, 1835
Conrad, 1835. Monogr. Fam. Unionidae 1(1): 11, pl. 6, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.
Type(s): HOLOTYPE ANSP_10287A, Bayou Teche, Louisiana.

Unio moussianus Conrad, 1853
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.
(error for Unio moussonianus Lea, 1852)

Unio nebulosus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 28, pl. 3, fig. 7.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.

Unio nervosa Conrad, 1834
‘Rafinesque’ of Authors.
Conrad, 1834. New Fresh-Water Shells: 70.
Say, 1834. Amer. Conch. 6: ??.
Lapham, 1852. Trans. WI Agri. Soc. 2: 369.
Agassiz, 1852. Arch. Naturg. 18(1): 48.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.
(misidentified reference to Unio (Leptodea) nervosa Rafinesque, 1820)

Unio niger Conrad, 1836
‘Rafinesque’ Conrad, 1836. Monogr. Fam. Unionidae 1(6): 49, pl. 46.
‘Rafinesque’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 253.
(reference to Unio (Elliptio) nigra Rafinesque, 1820)

Unio nodiferus Conrad, 1841
Conrad, 1841. Proc. Acad. Nat. Sci. 1: 19.
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 277, pl. 38, figs. 4, 8.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 253.
Type(s): LECTOTYPE ANSP_10285, Jackson, La.

Unio notatus Conrad, 1853
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 253.
(reference to Unio notatus Lea, 1838)

Unio nucleopsis Conrad, 1849
Conrad, 1849. Ann. Mag. Nat. Hist. 4: 301.
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 276, pl. 37, fig. 8.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 253.
Type(s): SYNTYPES ANSP_41421, Etowah River, Ga.

Unio obovalis Conrad, 1853
‘Rafinesque’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 253.
(misidentified reference to Obovaria obovalis Rafinesque, 1820)

Unio occidentalis Conrad, 1836
Conrad, 1836. Monogr. Fam. Unionidae 1(7): 64, pl. 36, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 253.
Type(s): TYPE LOST ANSP_UNKNOWN, Currant River, Arkansas.

Unio ogeecheensis Conrad, 1849
Conrad, 1849. Ann. Mag. Nat. Hist. 4: 300.
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 275, pl. 37, figs. 3-4.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.
Type(s): LECTOTYPE MCZ_146971 (by R.I. Johnson, 1956: 126), Ogeechee River, Georgia.

Unio oratus Conrad, 1849
Conrad, 1849. Ann. Mag. Nat. Hist. 4: 301.
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 276, pl. 37, fig. 6.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.

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

Unio paludicolor Conrad, 1853
‘Gould’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.
(error for Unio paludicolus Gould, 1845)

Unio pectitus Conrad, 1854
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 255. [nomen nudum]
Conrad, 1854. Jour. Acad. Nat. Sci. 2(4): 297, pl. 27, 4.

Unio pectorosus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 37, pl. 6, fig. 1.
Conrad, 1836. Monogr. Fam. Unionidae 1(3): 25, pl. 11, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.

Unio penitus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 33, pl. 5, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.
Type(s): HOLOTYPE ANSP_59860, Alabama.

Unio perovalis Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 43, pl. 2, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.
Type(s): HOLOTYPE ANSP_56416, Alabama R.

Unio perovatus Conrad, 1834
Conrad, 1834. Amer. J. Sci. 25(2): 338, pl. 1, fig. 3.
Conrad, 1834. New Fresh-Water Shells: 47, pl. 2, fig. 3.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.
Type(s): LECTOTYPE ANSP_129864 (by Johnson & Baker, 1973: 166), [no locality available - North America].

Unio perplicatus Conrad, 1841
Conrad, 1841. Proc. Acad. Nat. Sci. 1: 19.
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 276, pl. 38, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 261 [as ‘Plectomerus perplicatus’].
Type(s): HOLOTYPE ANSP_129919, Jackson, Miss.

Unio phillipsea Conrad, 1853
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 269.
(error for Unio phillipsii Conrad, 1835)

Unio phillipsii Conrad, 1835
Conrad, 1835. Monogr. Fam. Unionidae 1(1): 9, pl. 5, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 255.
Type(s): HOLOTYPE ANSP_19432, Wabash R., Indiana.

Unio planilateris Conrad, 1838
Conrad, 1838. Monogr. Fam. Unionidae 2(11): back cover.
Conrad, 1840. Monogr. Fam. Unionidae 2(12): 103, pl. 57, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 255 [as ‘planitaleris’].

Unio planitaleris Conrad, 1853
‘Con.’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 255.
(error for Unio planilateris Conrad, 1838)

Unio plectophorus Conrad, 1849
Conrad, 1849. Proc. Acad. Nat. Sci. 4: 154 [as ‘plectrophorus’].
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 277, pl. 38, fig. 7.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 261 [as ‘Plectomerus plectophorus’].
(correct name for Unio plectrophorus Conrad, 1849)

Unio plexus Conrad, 1838
Conrad, 1838. Monogr. Fam. Unionidae 1(10): 89, pl. 49, figs. 1-2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 255.
Type(s): LECTOTYPE ANSP_129923, Vera Cruz, Mexico.

Unio porrectus Conrad, 1854
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 268. [nomen nudum]
Conrad, 1854. Jour. Acad. Nat. Sci. 2(4): 296, pl. 26, fig. 7.
(homonym of Unio porrectus Sowerby, 1829; new name for Unio parallelus Conrad, 1841)
Type(s): HOLOTYPE ANSP_42847, Jackson, Miss.

Unio prasinus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 44, pl. 3, fig.1.
Conrad, 1837. Monogr. Fam. Unionidae 1(9): 79, pl. 44, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 255.

Unio productus Conrad, 1836
Conrad, 1836. Monogr. Fam. Unionidae 1(3): 31, pl. 14, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 255.
Type(s): HOLOTYPE ANSP_41397, [no locality available - North America].

Unio pullus Conrad, 1838
Conrad, 1838. Monogr. Fam. Unionidae 2(11): 100, pl. 55, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 255.

Unio pumilis Lea, 1836
‘Lea’ of Authors.
Lea, 1836. Synopsis Fam. Naiades: 20.
Lea, 1838. Synopsis Fam. Naiades: 17.
Lea, 1852. Synopsis Fam. Naiades: 24.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 255.
(error for Unio pumilus Lea, 1838)

Unio pygmoeus Conrad, 1853
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 256 [as ‘pygmœus’].
(error for Unio pygmaeus Lea, 1852)

Unio raveneli Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 39, pl. 6, fig. 4.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 256.
(renamed Margarita (Unio) watereensis Lea, 1836)
Type(s): SYNTYPE ANSP_41370, So. Carolina.

Unio reevianus Conrad, 1853
‘Lea’ of Authors.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 256.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 538.
Simpson, 1914. Descr. Cat. Naiades: 74.
Utterback, 1916. Amer. Midl. Nat. 4(10): 449.
Frierson, 1927. Check List N. Amer. Naiades: 73.
Haas, 1969. Das Tierreich 88: 437.
R.I. Johnson, 1980. Bull. MCZ 149(2): 132.
Oesch, 1984. Missouri Naiades: 225.
Turgeon et al., 1988. Am. Fisher. Soc. Spec. Publ. (16): 31.
Williams et al., 1993. Fisheries 18(9): 12.
Turgeon et al., 1998. Am. Fisher. Soc. Spec. Publ. (26): 35.
Graf & Cummings, 2007. J. Moll. Studies 73: 305.
Bogan, 2010. FADA: [web].
Cummings & Graf, 2010. Ecol. Class. N. Amer. FW Inverts.: 376.
Haag, 2012. N. Amer. Freshw. Mussels: 71 [as ‘Lampsilis reeviana’].
(error for Unio reeveianus Lea, 1852)

Unio rivularis Conrad, 1853
‘Say’ Conrad, 1836. Monogr. Fam. Unionidae 1(5): 45, pl. 23, fig. 1 [as ‘U. declivis’].
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 257.
Conrad, 1854. Jour. Acad. Nat. Sci. 2(4): 296.
Type(s): HOLOTYPE ANSP_42852, small creek in Greene Co., Ala.

Unio rubellus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 38, pl. 6, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 257.

Unio ruber Conrad, 1853
‘Rafinesque’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 257.
(reference to Obliquaria rubra Rafinesque, 1820)

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 saxeus Conrad, 1838
Conrad, 1838. Monogr. Fam. Unionidae 2(11): back cover.
Conrad, 1840. Monogr. Fam. Unionidae 2(12): 109, pl. 60, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 257.

Unio securiformis Conrad, 1849
Conrad, 1849. Proc. Acad. Nat. Sci. 4: ??.
Conrad, 1849. Ann. Mag. Nat. Hist. 4: 300.
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 275, pl. 37, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 250.

Unio stagnalis Conrad, 1849
Conrad, 1849. Ann. Mag. Nat. Hist. 4: 300.
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 275, pl. 37, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 257.
Type(s): HOLOTYPE MCZ_178778, Ogeechee River, Georgia.

Unio stramineus Conrad, 1834
Conrad, 1834. Amer. J. Sci. 25(2): 339, pl. 1, fig. 6.
Conrad, 1834. New Fresh-Water Shells: pl. 7, fig. 1.
Conrad, 1838. Monogr. Fam. Unionidae 1(10): 91, pl. 50, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 258.

Unio subcroceus Conrad, 1854
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 268. [nomen nudum]
Conrad, 1854. Jour. Acad. Nat. Sci. 2(4): 297, pl. 27, fig. 1.
Type(s): HOLOTYPE ANSP_41406, Canadian Fork, Arkansas River.

Unio subinflatus Conrad, 1835
Conrad, 1835. New Fresh-Water Shells, Appendix: 5, pl. 9, fig. 2.
Conrad, 1838. Monogr. Fam. Unionidae 2(11): 97, pl. 54, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 258.
Type(s): SYNTYPE ANSP_119985, Augusta, Ga.

Unio subplanus Conrad, 1837
Conrad, 1837. Monogr. Fam. Unionidae 1(9): 73, pl. 41, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 258.

Unio taeniatus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 26, pl. 4, fig. 2 [as ‘tæniatus’].
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 258 [as ‘tæniatus’].
Type(s): HOLOTYPE ANSP_56441, Flint River, Ala.

Unio tenebrosus Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 42, pl. 7, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 258.

Unio torulosus Conrad, 1834
‘Rafinesque’ Conrad, 1834. New Fresh-Water Shells: 72.
‘Raf.’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 259.
(reference to Amblema torulosa Rafinesque, 1820)

Unio trabalis Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 27, pl. 3, fig. 5.
Conrad, 1840. Monogr. Fam. Unionidae 2(12): 110, pl. 60, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 259.
Type(s): HOLOTYPE ANSP_56481, Flint River, Ala.

Unio vanuxemiensis Conrad, 1853
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 259.
(error for Unio vanuxemensis Lea, 1838)

Unio vaughnianus Conrad, 1853
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 259.
Haag, 2012. N. Amer. Freshw. Mussels: 74 [as ‘Villosa vaughniana’].
(error for Unio vaughanianus Lea, 1838)

Unio velatus Conrad, 1854
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 259.
Conrad, 1854. Jour. Acad. Nat. Sci. 2(4): 298, pl. 27, fig. 6.

Unio vibex Conrad, 1853
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 260.
(misidentified reference to Unio vibex Conrad, 1834)

Unio vibex Conrad, 1834
Conrad, 1834. New Fresh-Water Shells: 31, pl. 4, fig. 3.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 260.
Type(s): UNKNOWN ANSP_56488, Black Warrior River, Ala.

Unio whiteanus Conrad, 1853
‘Lea’ of Authors.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 260.
Frierson, 1927. Check List N. Amer. Naiades: 28.
(error for Unio whiteianus Lea, 1852)

Unio zieglerianus Hanley, 1843
‘Lea’ of Authors.
Hanley, 1843. Illustr. Descr. Cat. Rec. Bivalve Shells: 193.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 260.
Lea, 1870. Synopsis Fam. Naiades: 45.
(error for Unio zeiglerianus Lea, 1838)

Unio lienosus variety constrictus Conrad, 1838
Conrad, 1838. Monogr. Fam. Unionidae 1(10): 91, pl. 49, fig. 4.
Conrad, 1838. Monogr. Fam. Unionidae 2(11): back cover correginda [as ‘Unio constrictus’].
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 247 [as ‘Unio constrictus’].
(intro'd as intra-sp. of Unio lienosus Conrad, 1834)
Type(s): HOLOTYPE ANSP_56465A, North River, Rockbridge Co., Va.