342 . MigheW Catalogue of 



for several years, and having found thousands of specimens, I 

 cannot entertain the shghtest doubt that it is distinct from jP. 

 islandicus. It is uniformly much smaller than that species, 

 rarely exceeding an inch in length ; the epidermis is uniformly 

 of a light, horn color; in F. islandicus it is uniformly of a 

 reddish brown, even in young specimens, not larger than this ; 

 the transverse lines in this species are more numerous, and the 

 ultimate and penultimate whorls are proportionally smaller, 

 consequently it is more subulate. 



jP. tornatus, Gould. Hab. Grand Banks. Taken from 

 the stomachs of cod-fishes. It occurs, fossil, in a post-tertiary 

 formation at Peak's Island, Casco Bay. Very rare. 



F. scalar if oj'mis, Gould. I have found several in fishes' 

 stomachs taken in very deep water, in Casco Bay. It also 

 occurs in the Gulf of St. Lawrence, but is rare everywhere. 



jP. hamffias, Fiem. This elegant little shell is often found 

 in Casco Bay, — fresh specimens, however, are very rare. 



F. rufus, Mont. Gould. (F.. pleuroto?narius, Couth.) This 

 species is occasionally found, but it is scarce. 



F. harpularius, Couth. Rare. 



F. tuiTiculus, Mont. Not unfrequently obtained from deep 

 water in Casco Bay. I once detected it with the dredge in 

 Portland harbor. Capt. Walden has dredged it near the Fox 

 Islands. 



jP. cancellatus, iMigh. Hab. Casco Bay, in very deep water. 

 1 have never found more than four or five specimens. 



Genus Rostellaria. Lam. 



R. occidentalis, Beck. Pelagic. This curious species oc- 

 curs in Casco Bay, but I have never found perfect specimens. I 

 once took twenty specimens, mostly mature, from the stomach 

 of a cai-fish, (A)iai'rhichas lupus, L.) but so comminuted as to 

 be of little or no value. I am indebted to the fishermen for 

 several fine specimens taken in the Gulf of St. Lawrence. 



Genus Trichotropis. Brod. and Sowb. 

 T. horealis, Sowb. (T. costeUaius, Couth.) Pelagic. Some 



