1764 
1765 
1766 
1767 
1768 
1769 
1770 
1771 
1772 
17': 3 
1774 
1775 
1776 
1777 
1778 
1779 
1780 
1781 
1782 
1783 
1784 
1785 
1786 
1787 
1788 
1789 
1790 
1791 
1792 
1793 
1794 
1795 
1796 
1797 
1798 
1799 
1800 
1801 
63 
obesus, 
Lea, 
York River, Vir., 
Ts. Am. P. S., V. 4, pi. 13, f 26. 
obliquatus, 
Raf., 
Ohio, 
Ann. Gen. des S. P., v. 5, p. 43. 
“ var., 
Kentucky, 
N.H.Diss., V.2, p. 308, Oct. 1829. Unio ridibundus, Say, 
(( (( 
Ts. Am. P. S., V. 3, pi. 8, 1. 12. Unio sulcatus, Lea. 
obliquus, 
Lam., 
534 
Ohio River, 
Conr. Mon., p. 77, pi. 43, t. 2. Unio obovalis, Raf. 
“ var., 
Ts. Am. P. S., V. 3, pi. 9, 1 14. Unio ebenus, Lea. 
obovalis. 
Raf., 
534 
Ohio River, 
Ann. Gen. des S. P., V. 5, p. 45. is Unio obliquus, Lam. 
obtusus, 
Fer., 
N. Holland, 
is Unio auratus, Swains. 
occidens. 
Desh., 
538 
Susquehannah R., 
Conr. Mon., p. 4, pi. 2. is Unio ovatus. Say. 
occidens, 
Lea, 
Ohio River, 
Ts. Am. P. S., V. 3, pi. 10, f 16. is Unio cardium, Raf. 
Ohiensis, 
Raf, 
Ohio River, 
Ann. Gen. des S. P., V. 5, p. 50. Anodonta Ohiensis, Raf. 
tt 
Ts. Am. P. S., V. 3, pi. 13, 1. 23. Unio lavissimus. Lea. 
ochraceus, 
Say, 
Passaic River, 
Nich. Enc Amer., pi. 2, f 8. 
“ var., 
New Jersey, 
Conr. Mon., p. 37, pi. 17, f 2. Sym|>hynota ochracea. Lea. 
(( u 
Schuylkill River, 
List. C., pi. 157, f 12. Mytilus fluviatilis, Gmel. 
olivarius. 
Raf, 
Ohio River, 
Ts. Am. P. S., V. 3, pi. 4, f 4. 
“ var.. 
Kentucky, 
Ann. Gen. des S. P., v. 5, p. 48. 
<( (( 
Tennessee, 
Pouls. Transl. Raf, p. 55. Unio ellipsis. Lea. 
olivarius, 
Lea, 
Burrill River, India, 
Ts. Am. P. S., V. 4, pi. 16, f 38. 
orbiculatus. 
Hild., 
555 
Muskingum River, 
Sillim. Jour., V. 14, p. 284. is Unio crassus. Say. 
oriens. 
Lea, 
554 
Ohio River, 
Ts. Am. P. S., V. 4, pi. 6, t. 5. is Unio lata, Raf. 
ovalis. 
Flem., 
England, 
List. C., pi. 147, f 2. Mytilus angustior. List. 
“ var.. 
Mont. Test. Brit., p. 34. Mya ovalis, Mont. 
(( it 
Don. B Shells, V. 4, pi. 122 Mya ovata, Donov. 
it « 
Don. B. Shells, V. 3, pi. 101. Mya depressa, Donov. 
« « ^ 
Avon River, 
Turt. B Biv., pi. 16,1. 2 Mysca solida, Turt. 
« tt 
543 
Lake Champlain, 
Chemn. 10, pi. 170, f 1650. Unio noduiosa, Lam. 
tt tt 
Rossm. Icon., pi. 3, f 70, «, b. Unio tumida, Retz. 
it tt 
Rossm.Icon., pi. 14, f 202— 204. Unio ovata, Bouil. 
tt tt 
J. B. Bouillet Cat., p. 81. Unio rostrata. Stud. 
tt tt 
Mich. Comp., pi. 16, f 25. Unio limagnte, Bouil. 
tt tt 
Wood’s Gen. C., pi. 19, f 5. 
tt it 
Reeve C. Syst., pi 87, f 1. 
ovata. 
Valenc., 
New Jersey, 
Reeve C. Syst , pi. 89, f 10. is Unio cariosus. Say. 
ovata. 
Bouillet, 
France, 
J.B. Bouillet Cat., p. 84, No. 98. is Unio ovalis, Flem. 
ovatus. 
Say, 
538 
Ohio River, 
Conr. Mon., p. 4, pi. 2. Unio ventricosus, Desh. 
“ var.. 
Unio subovatus, Desh. 
it tt 
Unio occidens, Desh 
oviformis. 
Conrad, 
'Tennessee, 
N. F. W. Shells, p.46, pi. 3. f 6. 
paludicolor. 
Gould, 
Everglades, Flo., 
Proc. Bost. S. N. H., v. 2, p. 53. 
papyracea, 
Gould, 
Miami River, 
Proc Bost. S. N.H., V. 2, p. 53. 
parallelopipedon. Lea, 
Parana River, 
Ts. Am. P. S., V. 5, pi. 8, f 20. 
Paranensis, 
Lea, 
Parana River, 
Ts. Am. P. S., V. 5, pi. 14, f 42. Unio Solisiana, D’Orb. 
parvus, 
Barnes, 
Ohio River, 
Conr. Mon., pi. 9, f 1. 
tt 
Fox River, 
Sillim. Jour., v. 6, p. 174. 
Patagonicus, 
D’Orb., 
Rio Negros, Patag., 
Voy. Am. Merid., pi. 70, f 1-4. 
