INDEX. 



GENERA OF MOLLUSCA. 



iEoLis, 69, 192. 

 Alasraodon, 207, 242. 

 Amber- Snail, 46, 95. 

 Amphidesma, 218, 292. 

 Anatina, 219, 294. 

 Ancvlus, 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. 



Bulkea,68, 186. 



Bullina, 69, 190,334. 



Bythinia, 51, 123. 



Calmarv, 22, 29. 



Canoe- Shell, 66, 183. 



Capulus, 332. 



Cardiura, 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. 



Coriocella, 61, 161. 



Cowrie, 64, 175. 



Crenella, 205, 229. 



Cryptodon, 215, 278. 



Cuttle, 22, 28. 



Cvclas, 208, 246. 



Cycle, 208, 246. 



Cynthia, 309, 310. 



Cyprsea,309, 310. 

 Cvprina, 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. 



Glassv-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, 1&5, 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. 



