16 



INDEX OP SPECIES. 



Alvania 



tuuiida, 36, 109, 189, 327, 

 357, P 359, -P 360. 



turrita, O 327. 

 Atnalia 



coliiuabiana, 159. 

 Amalthea 



eflfodiens, R 5. 



Grayana, P 299, R 4. 



Panameasis, P 297, R 3. 

 Amiantis 



callosa, 22, 26, 39, 106, 126, 151, 

 279. 

 Amicula 



vestita, 71. 

 Amnicola 



Hindsii, 90. 



longinqua, 79, 162, 283, 325. 



Nuttalliana, 84, 162. 



protea, 79, 162, 2S3, 325. 



semiualis 84. 

 Amphidesma (=Semele) 



bicolor, 203, O 279. 



Californicum, 2S9. 



corbuloides, 222. 



corrugatum, 62. 



decisum, 195, O 228, V 213. 



ellipticum, 39, 203, 279. 



flavescens, 226, U 199. 



nucleolus, P 108. 



physoides, P 105. 



proximum, 39, 62, 203, 279, 

 289, P 28. 



pulchrum, 203, 188, 280. 



punctatum, 1S2. 



roseum, 195, 228, V 213. 



rubrolineatum, 195, V 212. 



rupium, 182. 



striosura, 39, 203, 280. 



tortuosum, 203, O 280. 



venustiam, P 28. 



ventricosum, 39, 203, 280. 

 Amphichasna 



Kindermauni, 297. 



regularis, 104, 210. 



Amphithalamus 



inclusus, 23, icx), 142, 283, 



lacuuatus, 99, 143. 

 Ampullaria 



ceiasum, O 291. 



Columbiensis, 155, O 291. 



Cumiugii, 179, 291, 326. 



malleata, 295, 326. 

 Amusium 



cauriiium, 22, 70, 73, 74, 81, 131, 

 165, 169. 

 Amycla 



Californiana, 23, 148. 



clirysalloidea, 99, 148. 



corniculata, 288. 



gausapata, 23, 25, 76, 114, 148, 

 149. 



Gouldiana, 53. 



minor, 2SS. 



tubeiosa, 23, 25, 114, 148, 288. 



undata, 99, 148. 

 Anachis 



albonodosa, 263, 343, P 512. 



atramentaria, iSo, 0361,0344. 



auriflua, 112. 



azora, 225. 



Californica, 25. 



conspicua, iSo, 269, 344. 



coronata, 25, 112, 151,155,0263, 



171,0343, P5oS,P 513- 

 costellata, 25, i8o,0 210,0 225, 



263, 343, 364 P 506, 



P507. 

 ?costellata, var. 263. 

 (?costel]ata, var.) pachyderma, 



263, P 507. 

 costulata, 363. 

 diminuta, 25, 180, 269, O344. 

 fulva, 180, 263, O 283, 343, 



P509. 

 fluctuata, 25, 59, 61, 180, 344. 

 fiiscostrigata, 105, 221, 

 Gaskoinei, 20, 53,112, 260, 263, 



O343, P511. 

 gracilis, 180, 344. 



