[641] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 347 
TRITIA TRIVITTATA Adams. Plate XXI, fig. 112. (p. 354.) 
H. and A. Adams, Genera of Recent Mollusca, vol. i, p. 122,1858. Nassa trivittata 
Say, Journal Acad. Natural Sciences, Philadelphia, vol. ii, p. 231; Gould, Invert. 
of Mass., ed. ii, p. 364, fig. 6382. Buecinum trivittatum Adams, Boston Journal 
of Nat. Hist., vol. ii, p. 265; Gould, op. cit., ed. i, p. 309, fig. 211. 
Gulf of Saint Lawrence to Northern Florida. Eastport, Maine, and 
day of Fundy, 3 to 50 fathoms, not abundant; Casco Bay, 1 to 40 fathoms, 
abundant; Vineyard Sound and Buzzard’s Bay, 0 to 14 fathoms, abundant ; 
off Block Island, 29 fathoms; Long Island Sound, common. Gaspé, 
Canada (Dawson). Fossil in the Post-Pliocene of Point Shirley, Mass., 
Nantucket (Desor), Gull Island (Smith), Virginia, South Carolina, and 
North Carolina; in the Pliocene of South Carolina; and in the Miocene 
of Maryland, Virginia, and South Carolina. 
ILYANASSA OBSOLETA Stimpson. Plate X XI, fig. 113. (p. 468.) 
American Journal of Conchology, vol. i, p. 61, Plate 9, figs. 11, 12, 1865. Nassa 
obsoleta Say, Journal Acad. Nat. Sciences, Philadelphia, vol. ii, p. 232, 1822 ; Bin- 
ney’s Say, p. 77, 1858 ; Gould, Invertebrata of Mass., ed. ii, p. 362, fig. 631; Bue- 
cinum obsoletum Gould, Invert. of Mass., ed. i, p. 308, fig. 210; Tritia obsoleta 
H. and A. Adams, Genera, p. 122, 1858. 
Eastern and southern coasts of the United States; northward to 
Casco Bay, Maine, and the mouth of the Kennebeck River, and local in 
the southern part of the Gulf of Saint Lawrence; southward to Florida 
and the northern shores of the Gulf of Mexico. Extremely abundant 
on the whole coast south of Cape Cod; more local farther north, and 
mostly restricted to sheltered bays and harbors. It has not been found 
on the east -n part of the coast of Maine nor in the Bay of Fundy. An 
isolated colony of this species is found on the western and southern 
shores of the Gulf of Saint Lawrence and Prince Edward’s Island (Bell, 
Dawson). 
As a fossil it has been found in the Post-Pliocene deposits at Point 
Shirley, in Chelsea, Massachusetts (Stimpson); at Nantucket Island 
(Desor); Virginia; and South Carolina. It is also reported from the 
Pliocene of South Carolina. 
UROSALPINX CINEREA Stimpson. Plate XXI, fig. 116. (p. 306.) 
American Journal of Conchology, vol. i, p.58, Plate 8, figs. 6 and 7, 1865. Fusus 
cinereus Say, Journal Academy Nat. Science, Philadelphia, vol. ii, p. 236, 1822; 
American Conchology, Plate 29, 1831. Buccinum plicosum Menke, Syn., ed. ii, 
p. 69, 1830, (t. Gould); Gould, Invertebrata of Mass., ed. i, p. 303, fig. 213. 
Buccinum cinereum Gould, op. cit., ed. ii, p. 370, fig. 637. 
Eastern coast of the United States; northward to Massachusetts Bay, 
and local farther north, to the Gulf of Saint Lawrence; southward to 
Georgia and Northern Florida, and on the west coast of Florida, at 
Tampa Bay. Abundant in Vineyard Sound, Buzzard’s Bay, Long 
Island Sound, and along the coast of the Middle States, especially on 
oyster-beds. In Vinéyard Sound it oceurs from above low-water mark 
to 8 fathoms. It occurs in some of the shallow and sheltered branches 
24 V 
