60 



Ohio River, 



Ohio River, 



Italy, 



New Orleans, 



Lower Alton, 



Ohio River, 



Ohio River, 



Ohio River, 



Carniola, 



Europe, 



China, 



South Carolina, 



Cumberland River, 



Louisiana, 



Fox River, 



Tennessee River, 



Wabash River, 



Schuylkill River, 



Ohio River, 



Darien, Georgia, 



Teche River, La., 

 Savannah River, 

 Chattahoochee Riv., 

 Gibraltar, 

 Lake Erie, 

 Alabama River, 



Nolachucky R., Ten. 



Bayou Teche, 



Harpeth River, 



Elk River, Ten., 



Ohio River, 



Ohio River, 



Ohio River, 



Java, 



Florida, 



Roanoke River, 



Africa, 



Mahoning River, 



Europe, 



Ohio River, 



Rio de la Plata, 



Ohio, 



Tar. River, N. Car., 



Detroit River, 



Ts. Am. Ph. S., 4, pi. 8, f. 12. 



Amer. Conch., pi. 34. 



Ts. Am. Ph. S., 5, pi. 4, f. 12. 



Ts. Am. Ph. S., 3, p. 452. 



Ts. Am. Ph. S., 8, pi. 19, f. 60. 



Schum. Vers. Test, pi. 11, f. 1. 

 Reeve C. Syst., pi. 88, f. 4. 

 Ts. Am. Ph. S., 5, pi. 15, f. 46. 

 Ts. Am. Ph. S., 5, pi. 3, f. 7. 

 Conr. Mon., p. 93, pi. 51, f. 1. 

 Conr. Mon., p.. 107, pi. 59. 

 Ts. Am. Ph. S., 4, pi. 4, f. 2. 

 Amer. Conch., pi. 16. 

 Ts. Am. Ph. S., 3, pi. 8, f. 11. 

 Ts. Am. Ph. S., 5, pi. 3, f. 8. 

 Ts. Am. Ph. S., 6, pi. 9, f. 24. 

 Chenu C. 111., pi. 20, f. 5. 

 Ts. Am. Ph. S., 6, pi. 6, f. 14. 

 Conr. Mon., p. 39, pi. 18, f. 2. 

 Ts. Am. Ph. S., 8, pi. 16, f. 34. 

 Ts. Am. Ph. S., 4, pi. 13, f. 27. 

 Sillim. Jour., 6, p. 266. 

 Ts. Am. Ph. S.,.4, p. 99, pi 14. 

 N. F. W. Shells, p. 67. 

 , Conr. Mon., p. 63, pi. 35, f. 2. 

 Amer. Conch., pi. 33. 

 Tr. Am. Ph. S., 6, pi. 6, f. 15. 

 Conr. Mon., p. 88, pi. 48. 

 Pouls. Trans. Raf., p. 33, sp. 21. 

 Ts Am. Ph. S., 3, pi. ll,f. 18. 

 Ts. Am. Ph. S., 3, pi. 5, f. 5. 

 Ts. Am. Ph. S., 8, pi. 18, f. 37. 

 Ts. Am. Ph. S., 6, pi. 9, f. 23. 

 Ts. Am. Ph. S., 6, pi. 4, f. 9. 



Ts. Am. Ph. S., 5, pi. 14, f. 41. 

 Rossm. Icon., p. 21. 

 Ts. Am. Ph. S., 3, pi. 6, f. 8. 

 Ts. Am. Ph. S., 5, pi. 8, f. 19. 

 Ts. Am. Ph. S., 3, pi. 13, f. 23. 

 Ts. Am. Ph. S., 3, pi. 3, f. 2. 

 Amer. Conch., pi. 41. 



is Unio complanatus, Soland. 



is Unio rotundatus, Lam. 

 is Unio capax, Green, 

 is Unio coccineus, Lea. 

 is Unio fragilis, Raf. 



is Unio littoralis, Lam. 

 Unio Grayi, Griff. 



Unio multiplicatus, Lea. 

 Unio undulatus, Say. 



Alasmodonta ambigua, Say. 



is Unio fuivus. Lea. 



is Unio littoralis, Lam. 

 is Unio luteolus, Lam. 

 Symphynota inrlata, Lea. 

 Unio Alabamensis, Conrad. 



is Unio trapezoides, Lea. 

 is Unio latiradiatus, Conrad. 

 Unio brevidens, Lea. 



is Unio subrostratus, Say. 

 is Unio stegarius, Raf. 



is Unio batavus, Lam. 

 is Unio quadrulus, Raf. 

 is Unio delodontus, Lam. 

 is Unio Obiensis, Raf. 



Unio fabalis, Lea. 



