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, pi. 42. 

 Ferussac, Guerin's Mag. 26. 

 U. Sayi, Lea, (not Tappan), Synopsis, 32. 



capsaeformis, Lea, 1834, iv. 143, 2, 4, Synopsis 33. 

 Con. Monog. 72, 40, 2, 3. 



cardium, Raf. Ann. 1820, 32, Poulson's Trans. 27. 

 Say^ Amer. Conch. 32, Synonym, of Unio, No. 11. 

 U. ventricosus, Baryies, Sillim. Journ. vi. 267, 13, 14. 

 U. occidens. Lea, 1832 (?) iii. 435, 10, 16. 



Synopsis, 26. 



Chenu, Conchyl. Unio, pi. 13, fig. 5. 

 U. suhovatus, Lea, 1832, iv. 118, 18, 46. 

 Chemc, Conchyl. Unio, pi. 12, fig. 6. 

 U. ovata, var. b. ? Lam. An. vi. 75. 



cariosus, Say, {b) Nicholson's Ency., article Conch., pi. 3, fig. 2. 

 Lam. Desh. An. sans Vert. vi. 545. 

 U. ovata, Vahn. 



U. cariosus, Kust., Chem. Unio, 24, 1, 2, 3. 

 Barnes, Sillim. Journ. vi. 271. 

 Co?i., 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. abesus. Lea, 1832, iv. 96, 13, 26, Synopsis, 32. 



Chenu, Conchyl. Unio^ pi. 18, fig. 4^ 

 castaneus, Lta, 1832, iv. 91, ] 1, 21, Synopsis 26. 



Ferussac, Guerin's Mag. 28. 



Chenu, Conchyl. Unio, pi. 11, fig. 5. 



catillus, Con., Monog. 1836, 30, 13, 2. 

 Kust., Chemn. Unio, pi. 10, fig. 2. 



cerinus. Con., (c) Monog. 1838, 95, 52. 

 U. flavus, Lea, (not Raf.) Synopsis, 24. 



cicatricosus. Say, Disseminator, 1829. 

 Co., Monog., 115,64. 

 Ferr., Guerin's Mag., 28. 



U. varicosus, Lea, 1832, iv. 100, 11, 20, Synopsis, 23. 

 Chenu, Conchyl. Unio, pi. 2, fig. 6. 



Cincinnatiensis, Lea, 1841, viii. 194, 8, 4, Synopsis, 22. 

 Chenu, Conchyl. Unio, pi. 30, fig. 3. 



Claibornensis, Lea, 1838, (young shell,) vi. 105, 24, 115, Synopsis, 28. 

 Chenu, Conchyl. Unio, pi. 23, fig. 3. 

 U. obtusus (?) iea, 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. 

 Fernssac, 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. 



