the Shells of Maine. 341 



Genus Pleurotoma. Lam. 



P. decussata, Couth. Pelagic. Rare in Casco Bay. Found 

 in fishes' stomachs. 



P. bicarinata, Couth. Found with the preceding. Very rare. 



P. violacea, Adams and Migh. Professor Adams first found 

 this species among loose sand and fragments of other shells, 

 on the shore, east of Mount Joy, Portland harbor. It is, how- 

 ever, pelagic, never being found in a fresh state but in the 

 stomachs of fishes. Rare. 



Genus Cancellaria. Lam. 



C. couthoyi, Jay. Pelagic. Hab. Casco Bay. Frequently 

 taken from haddocks' stomachs caught in deep water. 



Genus Fasciolaria. Lam. 



F. Ugata, Migh. Pelagic. Hab. Gulf of St. Lawrence. 

 About a dozen specimens were taken from the stomach of a 

 sand-dab by a fisherman in 184L This is the only species of 

 the genus that has been detected north of New York. 



Genus Fusus. Lam. 



All the species of this genus, found here, excepting P. 

 islandicus and P. decemcostatus, are pelagic, and are obtained 

 only from the stomachs of fishes. 



P. decemcostatus, Say. Found rather plentifully at Passama- 

 quoddy, during spring tides, burrowing in the mud near low- 

 water mark. I have recently received good specimens from 

 the island of Mount Desert. Dead specimens are occasionally 

 found on the shores of Casco Bay, and I have frequently 

 found very young ones in fishes' stomachs. It occurs fossil at 

 Topsham. 



P. islandicus, Penn. Gmel. Found at Passamaquoddy, in 

 company with the preceding. It is also taken from cod-fishes' 

 stomachs caught in the Gulf of St. Lawrence. I am not 

 aware that it is anywhere abundant. 



P. pygmccus, Gould. Having been familiar with this shell 



