320 Mighels' Catalogue of 



described by Dr. Gould. I am of opinion that all the speci- 

 mens yet found are immature. 



A. lactea, Brod. and Sow. Pelagic. Through a fisher- 

 man 1 have recently had the good fortune to obtain three fine 

 specimens of this rare species, the largest of which is 1.6 inch 

 in length, 1.3 in height. In one of the specimens, (the small- 

 est,) the epidermis is of a straw color, in both the others it is 

 black. The fisherman took them from the stomachs of cod- 

 fishes captured in the Gulf of St. Lawrence. I know not that 

 it has ever been found in the waters of Maine. 



A, portlandica, Migh. Pelagic. I found a single speci- 

 men of this species in the stomach of a haddock, in the spring 

 of 1842. The fish was taken in Casco Bay, many miles from 

 land, in deep water. Besides other obvious characteristics, it 

 is readily distinguished from its congeners by its chocolate-co- 

 lored interior. 



Genus Cyprina. Lam. 



C. islandica, Lin. Pelagic. Fine, large specimens of this shell 

 are frequently thrown upon Old Orchard beach, near the 

 mouth of Saco river. Very young specimens are found in 

 great abundance in fishes' stomachs, taken all along the coast. 



Genus Cytherea. Lam. 



C. convexa, Say. Pelagic. 1 have occasionally taken this 

 shell by dredging in Portland harbor, and it is occasionally 

 thrown upon our beaches by the sea, but it is extremely rare. 



Genus Venus. Lin. 



V. mercenaria, Lin. This species is rarely found in Casco 

 Bay, but it occurs in great abundance and perfection at Harps- 

 well, from whence it is brought to Portland market and sold 

 at ten or twelve cents per dozen. The specimens are much 

 larger than those which are brought here by the oystermen 

 from VVellfleet, Mass. 



V. notato, Say. 1 have one specimen of this shell, which 

 was given me by a gentleman, who found it in a bucket of 



