ACEPHALA. 19 
CARDIADZ. 
Carpium Isuanpicum, Lin. Gould, 89, f. 58.— Corall. 
Eastport in from 6 to 60 faths. (W.S.) Off Cape 
Cod, in 35 f. (Atwood.) 
C. prynuLatum, Con. Gould, 90, f.57.— Lamin. Whole 
Coast. : 
C. Morrtont, Con. — Litt. Nantucket, R. I., and Conn. 
ApuropiTE Gra@nuanpica, St. Cardium Grenlandicum, 
Chemn. Gould, 92. C. edentulum, Sow. Acardo 
edentulus, Swains., 1840. Aphrodite columba, Lea. 
— Corall. Cape Cod Bay, (W. 8.) and off Stoning- 
ton, Conn. (Lins.) 
VENERID. 
VENUS MERCENARIA, Lin. Gould. — Litt. Occurs spar- 
ingly north of Cape Cod, plentifully south of it. It 
is abundant in the Post Pliocene clay of Point Shir- 
ley. 
V. Fiucruosa, Gould, 87, f. 50.— From the Bank 
Fisheries. 
V. Gemma, Tott. Gould, 88, f.51.— Litt. Whole Coast. 
CytTHEREA convexa, Say. Gould, 84, f. 49.— Lamin. 
From Casco Bay to N. Y. 
Var. minor. In Buzzard’s Bay at the depth of eight 
fathoms, in mud, I have dredged many specimens of 
a Cytherea, none of which exceed 3 in. in length. Its 
animal differs somewhat from that of C. convexa. It 
is probably C. morrhuana, Lins. Conn. Cat. 85, but un- 
til further examination must be regarded as a variety. 
