Anodonta angulata Lea, 1838
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 97, pl. 16, fig. 52.
Type(s): HOLOTYPE (MONOTYPY) USNM_86759, Lewis R., Ore.

Anodonta buchanensis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 54. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 47, pl. 14, fig. 43.
Type(s): HOLOTYPE USNM_86719, Buck Creek.

Anodonta cylindracea Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 54. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 45, pl. 13, fig. 40.
Type(s): IDIOTYPE USNM_86712, Riv. Medellin, Vera Cruz, Mexico.

Anodonta decora Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 52. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 64, pl. 20, fig. 63.
Type(s): HOLOTYPE USNM_86633, canal, near Cincinnati, Ohio.

Anodonta exilis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 81, pl. 22, fig. 68.
Type(s): FIGURED SYNTYPE USNM_86726, Java ? .

Anodonta gigantea Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 52. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 1 [1], pl. 1, fig. 1.
Type(s): HOLOTYPE (MONOTYPY) USNM_86659, Port Gibson, Mississippi.

Anodonta newtonensis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 79 [as ‘newtoniensis’], pl. 21, fig. 66.
Type(s): LECTOTYPE USNM_86561 (by R.I. Johnson, 1946: 112), Schuylkill, near Phila. Pa.

Anodonta newtoniensis Lea, 1838
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 79.
(incorrect original spelling of Anodonta newtonensis Lea, 1838)

Anodonta nuttalliana Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 77, fig. 20, fig. 62.
Type(s): HOLOTYPE USNM_86391, Willamette R., Oregon.

Anodonta oregonensis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 80, pl. 21, fig. 67.
Type(s): HOLOTYPE USNM_86432, Wahlamat R., Oregon.

Anodonta ovata Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 52. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 2, pl. 2, fig. 2.
(homonym of Unio ovata Stark, 1828)
Type(s): HOLOTYPE USNM_86615, Marietta, Ohio.

Anodonta pavonia Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 78, pl. 21, fig. 65.
Type(s): LECTOTYPE USNM_86514, Little Beaver Cr., Ohio.

Anodonta pepinianus Lea, 1838
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 96, pl. 16, fig. 51.
Type(s): HOLOTYPE USNM_86440, Lake Pepin, Ohio.

Anodonta salmonia Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 51. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 45, pl. 14, fig. 41.
Type(s): HOLOTYPE USNM_86540, Poland, Ohio.

Anodonta subcylindracea Lea, 1838
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 106, pl. 24, fig. 117.
Type(s): SYNTYPE AMNH_31131A, Oak Orchard Creek, Orleans Co., New York.

Anodonta wahlamatensis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 78, pl. 20, fig. 64.
Type(s): HOLOTYPE USNM_86363, Wahlamat. R., Oregon.

Anodonta wardiana Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 50. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 46, pl. 14, fig. 42.
Type(s): HOLOTYPE USNM_86488, Chillicothe, Ohio.

Iridina coelestis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 57 [as ‘cœlestis’]. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 82, pl. 22, fig. 70 [as ‘cœlestis’].
Type(s): LECTOTYPE USNM_86785 (by Boyko & Sage, 1996: 17), Africa.

Margaritana arcula Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 43. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 71, pl. 22, fig. 69.
Type(s): LECTOTYPE USNM_86170, Altamaha R., Liberty Co., Georgia.

Margaritana deltoidea Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 44. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 43, pl. 13, fig. 38.
Type(s): LECTOTYPE USNM_86215 (by Clarke, 1981: 17), Scioto R., Ohio.

Margaritana fabula Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 46. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 44, pl. 13, fig. 39.
Type(s): LECTOTYPE USNM_86325 (by Clarke, 1981: 9), Cumberland R., Tenn.

Margaritana holstonia Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 45. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 42, pl. 13, fig. 37.
Type(s): HOLOTYPE (MONOTYPY) USNM_86320, Holston R., Tenn.

Unio arctior Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 39. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 10, pl. 4, fig. 10.
Type(s): HOLOTYPE USNM_86103, Ohio R., Cincinnati, Ohio.

Unio barnesianus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 20. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 31, pl. 10, fig. 26.
Type(s): HOLOTYPE (MONOTYPY) USNM_84586, Cumberland R., Tenn.

Unio bengalensis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 26. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 3, pl. 2, fig. 3.

Unio brownianus Lea, 1838
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 108, pl. 24, fig. 116.
Type(s): HOLOTYPE USNM_83883, Amazon R., S. Am.

Unio carbonarius Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 19. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 37, pl. 11, fig. 32.
Type(s): HOLOTYPE USNM_84080A, River Medellin, Vera Cruz, Mexico.

Unio carolinensis Lea, 1836
“Prof. Ravenel’s Letter” Lea, 1836. Synopsis Fam. Naiades: 39.
“Professor Ravenel’s Letter” Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 5.
(intro'd as syn of Unio vaughanianus Lea, 1838)

Unio claibornensis Lea, 1838
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 105, pl. 24, fig. 115.
Type(s): LECTOTYPE USNM_85020, Claiborne, Alabama.

Unio coccineus Lea, 1838
“Dr. Hildreth’s Letter” Lea, 1836. Synopsis Fam. Naiades: 34. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 12, pl. 5, fig. 12.
(homonym of Unio coccineus Conrad, 1836)
Type(s): FIGURED SYNTYPE USNM_85848, Columbus, Ohio.

Unio contradens Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 75, pl. 18, fig. 58.
Type(s): HOLOTYPE USNM_85185, [Java].

Unio creperus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 28. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 33, pl. 10, fig. 28.
Type(s): HOLOTYPE (MONOTYPY) USNM_85264, Tennessee.

Unio cumberlandicus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 27 [as ‘cumberlandianus’]. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 25, pl. 7, fig. 19.
(renamed Margaron (Unio) cumberlandianus Lea, 1852)
Type(s): HOLOTYPE USNM_85254, Tenn.

Unio discus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 74, pl. 18, fig. 57.
Type(s): HOLOTYPE USNM_85341, Found in sand ballast, Phila, Pa [Mexico].

Unio dolabraeformis Lea, 1838
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 103, pl. 24, fig. 113 [as ‘dolabræformis’].
Type(s): HOLOTYPE USNM_84888, Altamaha R., Darien, Georgia.

Unio dorfeuillianus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda [as ‘dorfuillianus’]. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 73, pl. 17, fig. 54.
(correct name for Unio dorfuillianus Lea, 1836)
Type(s): HOLOTYPE USNM_84215, Wabash River, Ind.

Unio fisherianus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 37. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 8, pl. 4, fig. 8.
Type(s): HOLOTYPE USNM_86022, Chester R., (head of), Md.

Unio folliculatus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 34. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 38, pl. 11, fig. 33.
Type(s): HOLOTYPE USNM_85861, Savannah R., S.C.

Unio gibber Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 20. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 35, pl. 10, fig. 30.
Type(s): FIGURED SYNTYPE USNM_84544, Carry [Caney] Fork, Tenn.

Unio gigantea Lea, 1838
‘Barnes’ Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 31, 35.
(misidentified reference to Unio crassus var. giganteus Barnes, 1823)

Unio glaber Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 29. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 34, pl. 10, fig. 29.
Type(s): HOLOTYPE USNM_85266, Holston R., Tenn.

Unio graniferus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 69, pl. 19, fig. 60.
Type(s): HOLOTYPE USNM_84296, Tuscumbia, Ala.

Unio hopetonensis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 30. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 29, pl. 9, fig. 24.
Type(s): HOLOTYPE USNM_85391, Hopeton, near Darien, Georgia.

Unio hydianus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 25. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 14, pl. 6, fig. 14.
Type(s): HOLOTYPE USNM_85010, Bayou Teche, Louisiana.

Unio interruptus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 24. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 15, pl. 6, fig. 15.
(homonym of Unio (Eurynia) solenoides var. interrupta Rafinesque, 1820; renamed Unio latiradiatus Conrad, 1838)
Type(s): HOLOTYPE USNM_84962, Harpeth R., Tenn.

Unio jayensis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 37. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 28, pl. 9, fig. 23.
Type(s): HOLOTYPE USNM_86031, Florida.

Unio jejunus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 30. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 9, pl. 4, fig. 9.
Type(s): HOLOTYPE USNM_85475, near Camden, S.C.

Unio katherinae Lea, 1838
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 143 [as ‘katherinæ’].
Lea, 1838. Synopsis Fam. Naiades: 35 [as ‘katherinæ’].

Unio lamellatus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 26. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 19, pl. 6, fig. 16.
Type(s): HOLOTYPE USNM_85173, Ganges R., India.

Unio lecontianus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 23. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 40, pl. 12, fig. 35.
Type(s): HOLOTYPE USNM_84852, Canoochie R., Liberty Co., Ga.

Unio lugubris Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 37. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 30, pl. 9, fig. 25.
(homonym of Unio lugubris Say, 1832; renamed Elliptio cylindraceus Frierson, 1927)
Type(s): HOLOTYPE USNM_85638, Hopeton, near Darien, Georgia.

Unio medellinus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 26. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 39, pl. 12, fig. 34.
Type(s): HOLOTYPE ANSP_9679, Vera Cruz, Mex.

Unio menkianus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 76, pl. 19, fig. 59.
Type(s): SYNTYPES USNM_84965, Harpeth R., Tenn.

Unio muhlfeldianus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 27 [as ‘Margarita (Unio) mühlfeldianus’]. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 41, pl. 12, fig. 36.
Type(s): HOLOTYPE USNM_85262, Cumberland R., Tenn.

Unio notatus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 26. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 28, pl. 8, fig. 22.
Type(s): HOLOTYPE (MONOTYPY) USNM_85075, Cumberland R., Tenn.

Unio novieboraci Lea, 1838
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 104, pl. 24, fig. 114 [as ‘novi-eboraci’].
Type(s): LECTOTYPE USNM_86042 (by R.I. Johnson, 1974: 100), Oak Orchard Cr., N.Y.

Unio obscurus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 26. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 7, pl. 3, fig. 7.
Type(s): HOLOTYPE USNM_85128, Tennessee.

Unio pliciferus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 13. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 61, pl. 17, fig. 53.
Type(s): SYNTYPE USNM_84080, Mexico.

Unio pulcher Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 25. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 6, pl. 3, fig. 6.

Unio pumilus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 20 [as ‘pumilis’]. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 23, pl. 7, fig. 17.
Type(s): HOLOTYPE USNM_84545, Black Cr., N.C.

Unio rangianus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: addenda. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 95, pl. 18, fig. 56.
Type(s): SYNTYPES USNM_84798, Mahoning R., near Poland, Ohio.

Unio roanokensis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 30. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 27, pl. 8, fig. 21.
Type(s): HOLOTYPE USNM_85423, Roanoke R., near Tarborough, N.C.

Unio simus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 29. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 26, pl. 8, fig. 20.
Type(s): HOLOTYPE USNM_85342, Cumberland R., Tenn.

Unio solidus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 20. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 13, pl. 5, fig. 13.

Unio spinosus Lea, 1836
Lea, 1836. Synopsis Fam. Naiades: 17, fronticepiece.
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 57, pl. 16, fig. 50.
Type(s): SYNTYPE ANSP_128763, Darien, Ga.

Unio splendidus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 23. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 70, pl. 19, fig. 61.
Type(s): HOLOTYPE USNM_84893, Altamaha R., Georgia.

Unio tampicoensis Lea, 1838
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 24, pl. 7, fig. 18.
Type(s): LECTOTYPE USNM_84843 (by R.I. Johnson, 1974: 143), Tampico, Mexico.

Unio tappanianus Lea, 1838
‘Rafinesque’ Conrad, 1835. New Fresh-Water Shells, Appendix: 4, pl. 9, fig. 1 [as ‘Unio viridis?’].
Lea, 1836. Synopsis Fam. Naiades: 39. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 62, pl. 17, fig. 55.
Type(s): HOLOTYPE USNM_86133, Juniata River, near Hollidaysburg, Pennsylvania.

Unio turgidus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 16. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 11, pl. 5, fig. 11.
Type(s): HOLOTYPE USNM_84277, near New Orleans, La.

Unio vanuxemensis Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 26. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 36, pl. 11, fig. 31.
Type(s): HOLOTYPE USNM_85146, Cumberland R., Tenn.

Unio vaughanianus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 39. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 5, pl. 3, fig. 5.
Type(s): SYNTYPE USNM_86106, Sawneys Creek, Camden, S. Carolina.

Unio venustus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 24. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 4, pl. 2, fig. 4.
Type(s): HOLOTYPE USNM_84971, Potosi, Missouri.

Unio zeiglerianus Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 26. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 32, pl. 10, fig. 27.
Type(s): HOLOTYPE USNM_85130, Cumberland R., Tenn.