(681] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 387 
Florida (Conrad); Texas (Roxmer); Cuba (D’Orbigny). Fossil in 
the Post-Pliocene of Virginia, South Carolina, and Florida; and 
‘in the Pliocene of South Carolina. A similar form, if not identical 
(P. Carolinensis Conrad), occurs in the Miocene of South Carolina. 
A species scarcely to be distinguished from this was sent to me in 
large numbers from La Faz, Gulf of California, by Captain Pedersen. 
VENUS MERCENARIA Linné. Plate XXVI, fig. 184 (animal). (p. 359.) 
Systema Nature, ed. xii, p. 1131,1767; Gould, Invert., ed. i, p. 85, fig. 675; ed. 
ii, p. 133, fig. 445. Mercenaria violacea Schumacher, Essai d’un Nouveau 
Syst., p. 135, Plate 10, fig. 3, 1817; Adams, Genera, vol. ii, p. 419. aWercenaria 
merecnaria Chenu, Man. Conch., vol. ii, p. 82, figs. 356-358, 1862.  Crassivenus 
mercenaria Perkins, Proc. Boston Soc. Nat. Hist., vol. xiii, p. 147, 1869. Fenus 
notata Say, Journ. Acad. Nat. Sci., Philadelphia, vol. ii, p. 271, 1822 (variety) ; 
Gould, Invert., ed. i, p. 87, fig. 67; ed. ii, p. 135, fig. 446. Venus preparca 
Say, op. cit., p. 271, 1822; Binney’s Say, p. 95. 
Florida to Massachusetts Bay ; more rare and local farther north, at 
Quahog Bay, Maine; Nova Scotia (Willis); and in the southern part of 
the Gulf of Saint Lawrence, to the Bay of Chaleur. It is not found on 
the coast of Maine, east of Kennebeck River, nor in the Bay of Fundy. 
Very common in Vineyard Sound, Buzzard’s Bay, Long Island Sound, 
and southward. Fort Macon (Coues); South Carolina (Gibbes) ; 
Georgia (Couper) ; Texas (Roemer). Jossil in the Post-Pliocene of Point 
Shirley, Nantucket Island, Gardiner’s Island, Virginia, and South Caro- 
lina; in the Pliocene of South Carolina; and in the Miocene of Mary- 
land, Virginia, North and South Carolina. 
CALLISTA CONVEXA Adams. Plate XXX, fig. 219. (p. 432.) 
H. and A. Adains, Genera, vol. ii, p. 425, 1858. Cytherea conveca Say, Journ. Acad. 
Nat. Sci., Phil., vol. iv, p. 149, Plate 12, fig. 3, 1824 (fossil) ; Gould, Invert., ed. 
i, p. 84, fig. 49; ed. ii, p. 131, fig. 444 (recent). Dione convexa Deshayes, Catal. 
Conch. Biv., British Museum, p. 71, 1853. Cytherea morrhuana Linsley, Amer. 
Jour. Sci., vol. xlviii, p. 276, 1845 (no description) ; Gould, op. eit., ser. ii, vol. 
vi, p. 233, 1848 (young). Cytherea Sayana Conrad, Amer. Jour. Sci., ser. i, vol. 
xxiii, p. 345, 1833 (recent) ; Fossils of the Medial Tertiary of the U.S., p. 13, Plate 
7, fig. 3, 1838 (fossil). Cytherea Sayii Perkins, Proc., Boston Soc. Nat. Hist., 
vol. xiii, p. 147, 1869. Callista (Caryatixs) convera Romer ; Verrill, Amer. Jour. 
Sci., vol. xlix, p. 277, March, 1870. 
New Jersey to Gulf of Saint Lawrence. Fort Macon, North Carolina, 
dead valves ou the beach, plenty, but perhaps fossil, (Coues, Yarrow). 
Great Egg Harbor, New Jersey ; Long Island Sound; Vineyard Sound, 
and Buzzard’s Bay, 2 to 10 fathoms, mud, common; Casco Bay, 3 to 
8 fathoms, mud, adult, living; Eastport, Maine, rare. Nova Scotia 
(Willis); Prince Edward’s Island (Dawson). 
Fossil in the Post-Pliocene of Virgivia and North Carolina; in the 
Pliocene of South Carolina; and in the Miocene of Maryland, North 
and South Carolina. 
The vame Sayana given to this species in 1833 (loc. eit.) by Mr. Con- 
