20 



INDEX OF SPECIES. 



Artemis 



gigautea, 60, 352. 



Pacifica, 278. 



pouderosa, 60, 2S9, P 60. 



saccata, 201, 227, O 246, 278, 

 P 62, S 161, U 201. 



simplex, 186, 246, 278, 

 287, P 61. 



subquadrata, 1S6, P 62. 



tenuis, 281. 

 ?Assiminea 



dubiosa, 275. 



subrotundata, 114, 142, 241. 

 Astarte 



Bauksii, 17S. 



borealis, 219. 



compacta, 88, 128, 168. 



compressa, 88, 128, 223, P 162. 



corbis, 236. 



coiTugata, 219, 223, 306, 



O347. 



crassidens, 175, 347. 



Danmoniensis, 223. 



Esquiinalti, 128. 



fluctuata, 97, 128. 



Garensis, O 221. 



lactea, 20, 71, 72, 175, 219, 

 221, 347. 



Omalii, 128. 



omaria, 97. 



orbicularis, 128, 236. 



Scotica, 20, 219, 221, 223. 



semisulcata, 219,0 221,0347. 



?striata, 178. 



triangularis, 336. 

 Asteronotus 



alabastrina, 94. 



sanguinea, 94. 

 Asthenothaerus 



villosior, 104, 209. 

 ?Atys 



casta, 104, 212, 

 Aulus 



grandis, 12. 

 Auricula 



acuta, 275. 



Auricula 



couciima, 275. 



infrequens, 275. 



Pauaiiieusis, 275. 



papiliifera, 275. 



stagnalis, 275. 



Tabogensis, 275. 



trilineata, 275, 

 Autonoe 



rubra, P 108. 

 Avicula 



Atlantica, 227, 236, 249, 



364, p 148, p 538. 



barbata, 50. 



Cumingii, 50. 



fimbriata, 296, P 550. 



lieteroptera, 50. 



libela, 31, 199. 



margaritifera, 277, 295. 



Peruviana, 107, 153. 



sterna, 24, 50, 199, i, O 227, 

 229, 233, 249, O 277, 

 O364, P i4S,Pi5-, U203. 

 Axinaea 



Barbarensis, 80, 82,97, 13°) I70' 



iucequalis, 154. 



intermedia, 82, 97, 130, 170. 



gigautea, 107. 



multicosta, 154, 155. 



parcipicfa, 154. 



pectenoides, 154. 



septentrionalis, var. subobso- 

 leta, 113, 130,237. 



Bankivia 



varians, 253, 320, 365, 

 P 226. 

 Barbatia 



alternata, 24, 31, 200, 256. 



aviculoides, 24. 



gradata, 24, 69, 97, 107, 130, 

 152. 



illota, 24, 107, 200. 



mutabilis, 155. 



pernoides, 102. 



Eeeviana, 27, 107, 200. 



