[681] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 387 
Florida (Conrad); Texas (Ramer); Cuba (D’Orbigny). Iossil 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 Paz, 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. 1, p. 85, fig. 67; ed. 
ii, p. 183, fig. 445.  Mercenaria violacea Schumacher, Essai @Vun Nouveau 
Syst., p. 135, Plate 10, fig. 3, 1817; Adams, Genera, vol. ii, p. 419. Mercenaria 
mercenaria Chenu, Man. Conch., vol. ii, p. 82, figs. 566-358, 1862. Crassivenus 
mercenaria Perkins, Proc. Boston Soe. Nat. Hist., vol. xiii, p. 147, 1869. Venus 
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). Fossil in the Post-Pliocene of Point 
Shirley, Nantucket Island, Gardinevr’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. Adams, Genera, vol. ii, p. 425, 1858. Cytherea convera 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 Soe. Nat. Hist., 
vol. xiii, p. 147, 1869. Callista (Caryatis) convera Rimer ; Verrill, Amer. Jour. 
Sci., vol. xlix, p. 277, March, 1870. 
New Jersey to Gulf of Saint Lawrence. Fort Macon, North Carolina, 
dead valves on the beach, plenty, but perhaps fossil, (Cones, 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 Virginia and North Carolina; in the 
Pliocene of South Carolina; and in the Miocene of Maryland, North 
and South Carolina. 
The name Sayana given to this species in 1833 (loe. cit.) by Mr. Con- 
