INDEX. 

 GENERA OF MOLLUSCA. 



JEoiis, 69, 192. 

 Alasmodon, 207, 242. 

 Amber- Snail, 46, 95. 

 Amphidesma, 218, 292. 

 Anatina, 219, 294. 

 Ancylus, 50, 120. 

 Anodon,207, 241. 

 Anomia, 205, 230. 

 Arion, 43, 73. 

 Arion-Slug, 43, 73. 

 Ascidia, 309, 311. 

 Astarte, 211,258. 

 Balea,48, 104. 

 Borer, 221, 304. 

 Bubble-Shell, 49, 111. 

 Buccine, 61, 162. 

 Buccinum, 61, 161. 

 Bulimus, 47, 97. 

 Bulla, 68, 188, 334. 

 Bullsea,68, 186. 

 Bullina, 69, 190, 334. 

 Bythinia, 51, 123. 

 Calmary, 22, 29. 

 Canoe- Shell, 66, 183. 

 Capulus, 332. 

 Cardium, 213, 270. 

 Chink Limpet, 65, 178. 

 Chiton, 66, 183. 

 Chrysalis. Snail, 47, 99. 

 Clausilia, 48, 101. 

 Cockle, 213, 270. 

 Ccecalium, 25, 39. 

 Coil-Shell, 49, 113. 

 Corbula, 221,303. 

 CorioceUa, 61, 161. 

 Cowrie, 64, 175. 

 Crenella, 205, 229. 

 Cryptodon, 215, 278. 

 Cuttle, 22, 28. 

 Cyclas, 208, 246. 

 Cycle, 208, 246. 

 Cynthia, 309, 310. 



Cypraea,309, 3JO. 

 Cyprina, 210, 256. 

 Cytherea, 211,258. 

 Dentalina, 26, 40,321. 

 Dentaline, 26, 40. 

 Dentalium, 72, 199. 

 Discorbis, 24, 34, 318. 

 Donax, 214, 274. 

 Doris, 71, 197. 

 Eledone,23, 31. 

 Emarginula, 65, 177, 331. 

 Ervilia, 341. 

 Eulima,55, 141,343. 

 Fusus, 62, 168. 

 Fan-Mussel, 206, 239. 

 Gaper, 219, 297. 

 Glassy- Snail, 46, 94. 

 Goodallia, 218, 289. 

 Halia, 68, 169. 

 Helix, 44, 79. 

 Kellia, 214, 274. 

 Lacuna, 56, 143. 

 Lagenula, 25, 38. 

 Lepton, 215, 277. 

 Limax, 43, 74. 

 Lima, 204, 228. 

 Limnaeus, 48, 105. 

 Limpet, 66, 179. 

 Littorina, 54, 135, 326. 

 Loligo, 22, 29. 

 Lottia,65, 176. 

 Lucina, 210, 254. 

 Lutraria, 218, 290. 

 Lyonsia, 220, 299. 

 Mactra, 217, 287. 

 Marsh-Shell, 51, 122. 

 Modiola, 206, 236. 

 Modiole, 206, 236. 

 Monodonta, 325. 

 Montacuta, 220, 301. 

 Mud-Mussel, 207, 241. 

 Mud-Shell, 48, 105. 



