392 



Page. 



Helix rufocincta, Newc. 315 



" rugata, Pease, 291 



" sculptilis, Bland, 249 



" significans, Bid. 372 



" solitaria. Say, 260 



" sportella, Gld. 245 



" striatella, Anth. 262 



" strigosa, Gould, 13, 261 



'•' suppressa, Say, 258 



" subplana, Binn. 250 



" thyroides, Say, 53 



" Tuwnsendiana, Lea, 13 



" Traskii, Newc. 314 



" Tryonii, Newc. 319 



" tudiculata, B. 13, 313 



" Vancouverensis, L. 245 



" varians, Menke, 321 



" Veitchii, Newc. 316 



" venosus, Pease, 290 



" vortex, Pfr. 252 



" Voyana, Newcomb, 256 



" Whitneyi, N. 263, 320 



" zonites, Pfr. 253 



Hemisinus Binneyi, T. 8 



Pazi, Tryon, 300 



simplex, T. 301 



Hercoglossa, Con. 101 



Lacunar ia, Con. 77 



Lepeta coecoides, Carp. 347 



Leptonotis, Con. 76 



Lithophagi subalveata, C. 73 



Lobifera, Pease, 206 



" nigricans, P. 206 



" papillosa, P. 206 



Lottia gigantia, Gray, 343 



Lucina lintea, Con. 281 



Lymnea Cubeusis, Pfr. 11 



" macrostoma, Say, 11 



" Shurtleffii, T. Ill 



Wilsonii, Tryon, 11 



Macoma virginiana, Con. 76 



Megaspira, Lea, 64 



Melania, see Angitrema. 



Eurycfelon. 



Goniobasis. 



Pleurocera. 



Page. 



Melania Balonnensis, C. 80 



" minuta, Tryon, 299 



" Oualanensis, P. 299 



" Peasei, Tryon, 300 



" prieraordica, T. Ill 



" tetrica, Con. 80 



Mercenaria obtusa, Con. 104 



Mysia parilis, C. 71 



Nassa Integra., Con. 65 



" " var. ovata, Con. 65 



" Marylandica, Con. 65 



" quadrata, Con. 65 



" su.bcylindracea, C. Q5 



Nautilus, perforatus, C. 101 



Niso lineata, Con. 69 



Orthonota, Con. 103 



Paludina scalaris, Jay, 114 



Partula bilineata, Pease, 201 



" citrina, Pease, 195 



" compacta, Pease, 200 



crassilabris, P. 199 



" elongata, Pease, 196 



fasciata, P. 202, 293 



" fusca, Pease, 193 



" gracilis, Pease, 197 



" ovalis, Pease, 194 



" rustica, Pease, 190 



" simulans, Pease, 202 



solida. Pease, 198 



" striolata, Pease, 197 



" trilineata, Pease, 195 



" umbilicata, Pease, 200 



" variabilis, Pease, 203 



vexillum, Pease, 198 



" vittata. Pease, 194 



Periploma alta, Con. 70 



fragilis, Tott. 106 



" papjTacea, 281 



Physa acutispira, Tryon, 9 



" Australiana, Con. 81 



" brevispira, Lea, 7 



" coniformis, Tryon, 6 



" Grosveuorii, Lea, 7 



" gyrina, Say, 7, 114 



" Hainesii, Tryon, 9 



" intesra, Hald. 7 



