Shells of New England. 47 



Height, ,25 inch ; diameter, ,26 inch *, divergence, 80 

 degrees. 



Habitat. Gulf of St. Lawrence ; taken from the stomach 

 of a cod-fish, by Mr. Foster, in the summer of 1841. Only 

 a single specimen was found, which is in the cabinet of J. W. 

 Mighels. 



Remarks. Identical with a species described by Mr. Sow- 

 erby, Conch. Illustr., fig. 7, under the above name. Although 

 Mr. Sowerby's figure agrees well with our shell, his de- 

 scription does not so in ail respects. For instance, " anfrac- 

 tibus quinque." Our shell has but four turns. Again, 

 ^'Long. 0,55, lat. 0,5 poll." Thus we see that Mr. Sow- 

 erby's shell is not only twice as large as our specimen, but 

 proportionally higher. The breadth of our shell in its 

 longest basal diameter is greater than the height. But as 

 we have only a single specimen, we prefer to publish it 

 with the assumption that it is identical with M. acuminata^ 

 rather than produce confusion by hazarding a new name for 

 an old shell. 



TROCHUS OCCIDENTALIS. 



PI. IV. Fig. 16. 



T. testa, pallida, imperforata, anfractibus septem, convexis; carinis pallide 

 fuscis ; infra laevi; sutura impressa ; columella callosa. 



Shell rather small, somewhat solid, sub-translucent, pale 

 horn-color, with light brown revolving carinas, of which 

 there are three on the upper whorls, and four to six on the 

 lower one ; whorls seven, convex : suture distinct ; spire 

 three-fifths of the length of the shell ; apex acute ; last whorl 

 with a smooth space between the carinas and two or three 

 course revolving striae around the umbilical region ; aperture 

 moderately depressed, transversely ovate ; labrum crenulated 

 by the carinas ; columella callous ; umbilical region indented. 



Height ,5 inch ; greatest basal diameter ,43 inch ; diver- 

 gence 60 degrees. 



Cabinets of Bost. Soc. Nat. Hist., G. B. Sowerby, Mons. 

 Largillier, J. W. Mighels and C. B. Adams. 



