Plate 27
ATLANTIC COAST BIVALVES
a. COMMON AWNING CLAM, Solemya velum Say, % inch (Nova Scotia to Florida), p. 333.
b. SHORT YOLDIA, Yoldia .sapotilla Gould, 1 inch (yVrctic to North Carolina), p. 340.
c. POURTALES' GLASS SCALLOP, Pro- peamiissium pourtalesinninn Dall, '2 inch (off Florida), p. 369.
d. MYALLS YOLDIA, Yoldia myalis Couthouy, 1 inch (Arctic to Cape Cod), p. 340.
e. BROAD YOLDIA, Yoldia thraciaeformis Storcr, 2 inches (Arctic to North Carolina; also Alaska), p. 340.
f. SULCATE LIMOPSIS, Limopsis sulcata V. and B., 3^ inch (Massachusetts to West Indies), p. 347.
g. UNDULATE BITTERSWEET, Glycyrneris undata L., 2 inches (North Carolina to West Indies), p. 348.
h. DECUSSATE BITTERSWEET, Glycymeris decussata L., 2 inches Florida and West Indies), p. 348.
i. COMB BITTERSWEET, Glycymeris pectinata Gmelin, ^4 inch (North Carolina to West Indies), p. 348.
j. MOSSY ARK, Area umboiiala Lamarck, 2 inches (North Carolina to West In- ches), p. 342.
k. DOC BALES' ARK, Barbatia tenera C. B. Adams, 1 inch (Florida and West In- dies), p. 343.
1. ICELAND SCALLOP, CJdamys islaudica Midler, 3 inches (Arctic to Massa- chusetts; also to Washington), p. 365.
m. ATLANTIC DEEPSEA SCALLOP, Placo- pecten magellanicus Gmelin. 9 inches (Labrador to North Carolina), p. 366.
n. TURKEY WING, Area zebra Swainson, 3 inches (North Carolina to West In- dies), p. 342.
o. CUT-RIBBED ARK, Anadara lienosa fie- ri da ji a Conrad, 4 inches (North Caro- lina to Texas), p. 344.
p. EARED ARK, Anadara notabilis Roding. 2 inches (Florida to Brazil), p. 344.
q. RED-BROWN ARK, Barbatia cancellaria Lam., 1 inch (Florida and West Indies), p. 343.
r. WHITE BEARDED ARK, Barbatia ean- dida Helbling, 2 inches (North Carolina to Brazil), p. 342.
s. TRANSVERSE ARK, Anadara transversa Say, 1 inch (Cape Cod to Texas), p. 345.
t. BLOOD ARK, Anadara ovalis Brug., 2 inches (Cape Cod to Texas and West Indies), p. 345.
u. WHITE MINIATURE ARK, Barbatia doniingensis Lam., j/2 inch (North Ca- rolina to West Indies), p. 343.
v. SAW-TOOTHED PEN SHELL, Atrina serrata Sby., 6 inches (North Carolina to Florida), p. 360.
w. AMBER PEN SHELL. Pinna earnea Gmelin, 5 inches (Florida and West Indies), p. 360.
x. STIFF PEN SHELL, Atrina rigida Solan- der, 7 inches (North Carolina to West Indies), p. 360.
y. INCONGRUOUS ARK, Anadara brasiliana Lam., 2 inches (North Carolina to Texas to Brazil), p. 346.
z. PONDEROUS ARK, Noetia ponderosa Say, 2 inches (Virginia to Texas), p. 346.
