354 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [648] 
CERITHIOPSIS EMERSONII Adams. Plate XXIV, fig. 151. (p. 417.) 
H. and A. Adams, Genera, p. 240, 1858; Gould, Invert., ed. ii, p. 387, fig. 649 
‘Cerithium Emersonii C. B. Adams, op. cit., p. 284, Plate 4, fig. 10, 1838; Gould, 
Invert., ed. i, p. 275, fig. 180. : 
Cape Cod to South Carolina. Vineyard Sound and Buzzard’s Bay, 3 
to10 fathoms, shelly. Nantucket (Adams); Huntington and Greenport, 
Long Island (S. Smith). Fossil in the Miocene of North Carolina, 
(Conrad). Jeffreys (in British Conchology, vol. iv, p. 257) regards this 
species as identical with Cerithium metula Lovén, 1846, on the authority 
of Danielssen. This appears to be an erroneous identification. 
CERITHIOPSIS TEREBRALIS Adams. Plate XXIV, fig. 150. (p. 417.) 
H. and A. Adams, Genera, vol. i, p. 241, 1858; Gould, Invert., ed. ii, p. 389, fig. 
650. Cerithium terebrale C. B. Adams, Boston Journal Nat. Hist., vol. iii, p, 320, 
Plate 3, fig. 7, 1840; Gould, Invert., ed. i, p. 276, fig. 181. Cerithium terebellum 
C. B. Adams, Catalogue Genera and Species of Recent Shells in Collection of 
C. B. A., p. 13, 1847. 
Cape Cod to South Carolina, Vineyard Sound and Buzzard’s Bay, 2 
to 12 fathoms, not uncommon. New Bedford, Massachusetts (Adams). 
Greenport and Huntington, Long Island (S. Smith). Fort Macon, 
North Carolina (Coues). 
TRIFORIS NIGROCINCTUS Stimpson. Plate XXIV, fig. 152. (p. 305.) 
Smithsonian Check-List, p. 5, 1860; Gould, Invett., ed. ii, p. 323, fig. 592. Cer- 
ithium nigrocinctum C.B. Adams, Boston Jour. Nat. Hist., vol. ii, p. 286, Plate 
4, fig. 11, 1838; Gould, Invert., ed. i, p. 277, fig. 182. 
Cape Cod to South Carolina. Vineyard Sound and Buzzard’s Bay, 
low-water to 10 fathoms, not uncommon; near New Haven; and Great 
Egg Harbor, New Jersey. Dartmouth, Massachusetts (Adams). Hunt- 
ington and Greenport, Long Island (S. Smith). Fort Macon (Coues): 
BITTIUM NIGRUM Stimpson. Plate XXIV, fig. 154. (p. 305.) 
Smithsonian Check-List, p. 5, 1860; Gould, Invert., ed. ii, p. 321, fig. 590. Past- 
thea nigra Totten, American Jour. of Science, vol. xxvi, p. 369, Plate 1, fig.7 
1834. Cerithium reticulatum Totten, op. cit., vol. xxviii, p. 352, fig. 8, 1835 (non 
Da Costa). Cerithium Sayi Menke (t. Gould); Gould, Invert., ed. i, p. 278, fig. 
183. 
Massachusetts Bay to South Carolina; local north of Cape Cod, in 
Boston Harbor (Totten), and in the Gulf of Saint Lawrence, at Pictou 
and Prince Edward’s Island (Dawson). Itis not found on the coast 
of Maine nor in the Bayof Fundy. Vineyard Sound and Buzzard’s 
Bay, abundant, low-water to 8 fathoms, among alge and eel-grass; Long 
Island Sound; and Great Egg Harbor, New Jersey, abundant. Fort 
Macon (Coues). , 
The Bittium alternatum (Turritella alternata Say, 1822) is a very closely 
related species, and probably identical with this. 
Turritella erosa Couthouy, recorded, with a mark of doubt, by Lin- 
ley, as from the stomach of a cod, off Stonington, Conn., was perhaps 
