246 (FEBRUARY, 
Unio caliginosus, Lea, 1845, x. 79, 7,21, Synopsis 29. 
callosus, Lea, 1841, viii. 239, 23, 54, Synopsis 33. 
camptodon, Say, Amer. Conch. pl. 42. 
Ferussac, Guerin’s Mag. 26. 
U. Sayi, Lea, (not Tappan), Synopsis, 32. 
capseformis, Lez, 1834, iv. 148, 2, 4, Synopsis 33. 
Com. Monog. 72, 405-2553. 7 
cardium, Raf. Ann. 1820, 32, Poulson’s Trans. 27. 
Say, Amer. Conch. 32, Synonym. of Unio, No. 11. 
U. ventricosus, Barnes, Sillim. Journ. vi. 267, 18, 14. 
U. occidens, Lea, 1832 (?) ii. 435, 10, 16. 
Synopsis, 26. 
Chenu, Conchyl. Unio, pl. 18, fig. 5. 
U. subovatus, Lea, 1832, iv. 118, 18, 46. 
Chenu, Conchyl. Unio, pl. 12, fig. 6. 
U. ovata, var. d.? Lam. An. vi. 75. 
carlosus, Say, (4) Nicholson’s Ency., article Conch., pl. 8, fig. 2. 
Lam. Desh. An. sans Vert. vi. 545. 
U. ovata, Valen. 
U. cariosus, Kwst., Chem. Unio, 24, 1, 2, 3. 
Barnes, Sillim. Journ. vi. 271. 
Con., Monog., 40, 19. 
Gould, Invertebrata of Mass., 107. 
Dekay, Zool. of New York, 193. 
Lea, Synopsis, 27. 
Lampsilis cariosa, Agas. MSS. Stimpson’s Shells of New Eng. 14. 
Carolinanus, Bosc. Fer. Guerin’s Mag. 26. 
—~ U. obesus, Lea, 1832, iv. 96, 13,26, Synopsis, 32. 
Chenu, Conchyl. Unio, pl. 18, fig. 4. 
castaneus, Lea, 1832, iv. 91, 11,21, Synopsis 26. 
Ferussa2, Guerin’s Mag. 28. 
Chenu, Conchyl. Unio, pl. 11, fig. 5. 
catillus, Coz., Monog. 1836, 30, 13, 2. 
Kust., Chemn. Unio, pl. 10, fig. 2. 
cerinus, Coz., (c) Monog. 1838, 95, 52. 
U. flavus, Lea, (not Raf.) Synopsis, 24. 
- cicatricosus, Say, Disseminator, 1829. - 
Con., Monog., 115, 64. 
Ferr., Guerin’s Mag., 28. 
U. varicosus, Lea, 1832, iv. 100, 11, 20. Synopsis, 23. 
Chenu, Conchyl. Unio, pl. 2, fig. 6. 
Cincinnatiensis, Lea, 1841, vill. 194, 8,4, Synopsis, 22. 
Chenu, Conchyl. Unio, pl. 30, fig. 3. 
Claibornensis, Lea, 1838, (young shell,) vi. 105, 24, 115, Synopsis, 28. 
Chenu, Conchyl. Unio, pl. 23, fig. 3. 
U. obtusus (?) Lea, viii. 201, 11, 13. 
Clarkianus, Lea, 1852, x. 273, 21,30, Synopsis, 28. 
clava, Lam. An. sans Vert. vi.74. Desh. ed. of Lam. vi. 537. 
Ferussac, Guerin’s Mag. 28. 
Con., Monog. 5, 3. 
U. mytiloides, Raf. v.47, Poulson’s Trans., 47. 
U. scalenia, Raf. Ann. v.43, Poulson’s Trans. 47. 
U. cuneatus, Raf. Ann. v.47, Poulson’s Trans. 53. 
Say, Amer. Conch. Syn. No. 35. 
U. modioliformis, Say, (not Lea.) ~ 
U. clavus, Lea, Synopsis, 26. 
Kust. Chemn. Unio, 39, 7, 2. - 
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