1853.] 247 



Unio coccineus, Hildrcthf MSS. 



Con., Monog., 1836, 29, 13, 1. 



Leay 1838, Synopsis, 35, vi. 12, 5, 12. 



coUinus, Con., Monog., 65, 36, 2, and 159, 60, 3. 

 Lea, Synopsis, 23. 



connplanatus, Soland. Lea, (e) 



Mya complanata, Soland. Portland Catalogue, 100. 



Dillwyn, Catalogue, i. 51. 



IT. connplanatus, hea. Synopsis, 32. 



violaceus, S-peng., Ferrus, Guerin's Mag. 26. 

 coarctata, Lam., Anim. vi. 75. 

 Desk. ed. of Lam. vi. 535. 

 Enc. Method, ii. 581. 

 purpurascens. Lam., Desh. ed. vi. 536. 



aurata. Raf., Ann. Poulson's trans. 27. 

 jejunus ? Lea, vi. 9, 4, 9. 



Chenu, pi. 20, fig. 1. 

 Roanokensis ? Lea, vi. 27, 8, 21, Synopsis, 32. 



Belassert, Recueil. de Conchyl. pi. 12, fig. 3. 



Chenu, pi. 12, fig. 5. 

 complanatus, Gould, Invert, of Mass. 107, 68, 69, 70. 



Bekay, Zool. of New York, 188, 22, 246. 



Agas., Stimpson's Shells of N. Eng. 13. 

 purpureus. Say, Nicholson's Enc. fig. 3. 



Barnes, Sillim. Journ. vi. 264. 



concavus. Lea, 1852, x. 260, 15, 1,1, Synopsis 29. 

 Congaraeus, Lea, 1832, iv. 62, 6, 4, Synopsis, 27. 



Con., Monog., pi. 12, fig. 1. 



Chemc, Conchyl. Unio, pi. 8, fig. 5. 



compressissimus, Lea, 1845, x. 81, 8, 23. Synopsis, 24. 



Conradicus, Lea, 1834, Synopsis, 21, v. 63, 9,2. 

 Chenu, Conchyl. Unio, 87, 47, 3. 



contrarius. Con., Journ. Acad. Nat. Sc, i. 276, 37, 7. 



constrictus, Con., Monog., pi. 49, fig. 4. 

 Lea, Synopsis, 29. 



Cooperianus, Lea, 1834, v. 61, 8, 21, Synopsis 22. 



cor, Con., New F. W. Shells, 28, 3, 3. 

 Lea, Synopsis, 26. 



cordatus, Raf. (Obovaria,) Ann., v. 46, Poulson's trans. 52. 

 Con., Monog., 48, 25. 

 Kust., Chemn. Unio, pi. 13, flg. 1. 



creperus, Lea, vi. 33, 10, 28, Synopsis, 31. 

 Chenu, Conchyl. Unio, pi. 23, fig. 5. 



crocatus, Lea, 1841, Synopsis 27, viii. 238, 22, 52. 

 Chenu, Conchyl. Unio, pi. 33, fig. 1. 



Cumberlandianus, Lea, 1838, vi. 25, 7, 19, Synopsis 30. 



U. Cumberlandicus, Chenu, pi. 24, fig. 1. 



U. glaber \ Lea. 

 cuneolus. Lea, 1842, viii. 193, 7, 3, Synopsis 24. 



Chenu. Conchyl. Unio, pi. 30, fig. 2. 



39 



