FAMILY NAYADES. 



236. Unio . 



ORDER MONOMYARIA. 



FAMILY MYTILACEA. 



237. Pinna squamosa ? 



FAMILY PECTINIDES. 



238. Pecten . 



239. Pecten . 



CLASS MOLLUSCA. 



ORDER GASTEROPODA. 



FAMILY PHYLLIDINA. 



240. Chiton . 5 specimens. 



241. Chiton . 



242. Chiton . 



FAMILY BULL^ANA. 



243. Bulla ampulla. 



ORDER TRACHELIPODA. 



FAMILY COLIMACEA. 



244. Helix pomatia. England. 



245. Helix aspersa. England. 3 specimenf5. 



246. Helix melanotragus. Africa. 



247. Helix nemoralis. England. 



248. Helix . England. 2 specimens. 



249. Helix . West Indies. 



250. Helix . West Indies. 



251. Helix . West Indies. 



^52. Carocolla West Indies. 



253, 254. BuLiNUs rcsaceus. West Indiee 



255. BuLiNUs rcsaceus, (young.) 



256, 257. Pupa . West Indies. 



258. Auricula — — . West Indies. 



