GASTEROPODA. 



127 



Cerithiopsis emersonii Gould, Inv. Mass., 1870, p. 387, fig. 649. 

 Cerithiopsis (Eumetaf) subulata Dall, Bull. Mus. Comp. Zool., 

 1889, vol. 18, p. 252, pi. 20, fig. 4. 



Mass.— Vineyard Sound and Buzzards Bay, 2 to 12 fathoms; 

 New Bedford Harbor; Nantucket; Wellfleet. 

 R. I. 



Cerithiopsis costulata (Moller). 



G. O. Sars, Moll. Reg. Arct. Norv., 1878, p. 189, pi. 13, fig. 7. 

 Turritella f costulata Moller, Kr0yer's Naturh. Tidskr., 1842, 

 vol. 4, p. 83. [Greenland.] 



Me.— Off Eastport, Bay of Fundy (Verrill). 



*Seila adamsii (H. C. Lea). 



Dall, Trans. Wagner Free Inst. Scl., 1892, vol. 3, pt. 2, p. 267. 



Ccrithium tcrebrale C. B. Adams, Boston Joum. Nat. Hist., 

 1840, vol. 3, p. 320, pi. 3, fig. 7 {non Lamarck). " New Bedford 

 [, Mass.]." 



Ccrithium adamsii H. C. Lea, Trans. Amer. Phil. Soc, 1846, 

 new ser., vol. 9, p. 268. 



Cerithiopsis tercbralis Gould, Inv. Mass., 1870, p. 389, fig. 650. 



Mass. — Vineyard Sound and Buzzards Bay, 2 to 12 fathoms. 



R. I. — Narragansett Bay. 



Conn. 



CERITHIIDAE. 



*Bittiuin alternatum (Say). 



Turritella alternata Say, Joum. Acad. Nat. Sci. Phila., 1822, 

 ser. 1, vol. 2, p. 243. " United States." 



Pasithca nigra Totten, Amer. Joum. Sci., 1834, ser. 1, vol. 26, 

 p. 369, pi. 1, figs. 7a, 7b (young). 



Bittium nigrum Gould, Inv. Mass., 1870, p. 321, fig. 590. 



