114 



INDEX. 



Stenotrema, Raf., 33. 



hirsuta, Say, 34. 



monodon, Rackett, 33. 

 STREPOMATID^E, 83. 

 Strobila, Morse, 46. 



labyrinthica, Say, 46. 

 Succinea, 50. 



avara, Say, 51. 



obliqua, Say, 50. 



ovalis, Gould, 50. 

 SUCCINID^E, 49. 



Tebennophorus, Binn., 19. 



carolinensis, Bosc, 19. 

 Tellina mrginica, Gmel., 102. 

 Triodopsis, Raf., 30. 



appressa, Say, 31. 



fallax, Say, 32. 



inflecta, Say, 32. 



introferans, Bland, 32. 

 var. minor, Bland, 32. 



tridentata, Say, 31. 



Unio, Retz, 86. 



cariosus, Say, 88. 

 complanatus, Sol., 86. 

 Fisherianus, Lea, 90. 

 heterodon, Lea, 91. 

 nasutus, Say, 90. 

 ochraceus, Say, 89. 

 purpureus. Say, 86. 



Unio radiatus, Lam., 87. 

 Tappanianus, Lea, 89. 

 undulatus, Say, 92. 

 86. 



Vallonia, 43. 



minuta, Say, 44. 



var. costata, Say, 44. 

 Valvata, Miill., 78. 



tricarinata, Say, 78. 

 VALVATID^;, 77. 

 Vertigo, Mull., 57. 



decora, Gould, 58. 



Gouldii, Binn., 59. 



milium, Gould, 59. 



ovata, Say, 57. 



pentodon, Say, 55. 



VlVIPARID^E, 74. 



Zonites, 37. 



demissus, Binn., 39. 



fuliginosus, Griff., 37. 



gularis, Say, 39. 



inornatus, Say, 38. 



internus, Say, 39. 



Isevigatus, Pfr., 38. 



ligerus, Say, 39. 



subplanus, Binn., 38. 



suppressus, Say, 40. 

 Zua, Leach, 52. 



lubricoidea, Stimp., 52. 



THE END. 



