30 ROCHESTER ACADEMY OF SCIENCE. [Nov. 23^ 



145. Triton i Colubraria) maculosus, (imel. 



146. " " obscurus, Reeve. 



147. " " decapitatus, Reeve. 



148. Ranella (Lampas) lampas, Linn. 



149. " " bufonia, Gmel. 



150. " " cruentata, Sowb. 



151. " " granifera, Lam. 



152. " " affinis, Bred. 



I believe the last two species to be synonymous. The only 

 difference seems to be the larger size of the tubercles in affinis. 



153. Ranella (Lampas) sp. 



This specimen was covered with stony algre, and no characters 

 could be made out. 



154. Ranella (Argobuccinum) pusilla, Brod. A beautiful 

 little species which does not seem to be at all common. 



Family CASSIDIDi^. 



155. Cassis (Casmaria) vibex, T-inn. 



Family DOLIIDiE. 



156. Dolium perdix, Linn. 



This species enjoys a wide distribution, being found in the Indian 

 Ocean, Polynesia, West Africa, West Indies, Brazil and the Mauritius. 



Family CYPRi^IDiE. 



157. Cypraea scurra, Chemn, Exceptionally large and fine. 

 Not before reported from the Mauritius. 



158. Cypraea fimbriata, Gmel. The violet painting of the 

 extremities of the shell is very conspicuous. 



159. Cypraea felina, Gmel. 



160. " hirundo, Linn. 



161. " Oweni, Sowb. 

 These three forms are very common. 



