Plate 28
ATLANTIC: COAST BIVALVES
a. COMMON EASTERN OYSTER, Crasso-strea virgiiiica Gmelin, 3 inches (entire Atlantic Coast), p. 375.
b. SPONGE OYSTER, Osirea permoUis Sby., 2 inches (North Carolina to West Indies), p. 374.
c. CRESIED OYSTER, Ostren eqiiestris Say, 2 inches (North Carolina to West In- dies), p. 373.
d. COON OYSTER, Ostrea Irons L., 2 inches. Two forms. (Florida and West Indies), p. 373.
e. DISCORD MUSCULUS, Mnscidus discors L., 1 inch (North Atlantic and North Pacific), p. 355.
f. SMOOTH MUSCULUS, Mnscnlus laevi- gatus Gray, 1 inch (North Atlantic and North Pacific), p. 355.
g. BLACK MUSCULUS, Mnscnlus niger Gray, 2 inches (Arctic to North Caro- lina; also to Washington), p. 355.
h. ATLANTIC RIBBED MUSSEL, Modiohis demissus Dillwyn, 3 inches (Canada to South Carolina), p. 351.
i. ATLANTIC PAPER MUSSEL, Amygdnlnm papyria Conrad, 1 inch (Maryland to Texas), p. 353.
j. GLANDULAR CRENELLA, Creuella glandida Totten, ^/s inch (Labrador to North Carolina), p. 350.
k. GIANT DATE MUSSEL, Lithophaga an- tiUanim Orb., 4 inches (Gulf of Mexico, south), p. 357.
1. FLATTENED CARDITA, Venericardia perphnia Conrad, 34 i"ch (North Caro- lina to Florida), p. 380.
m. BLACK DATE MUSSEL, Lithophaga nigra Orb., 2 inches (Florida and West In- dies), p. 355.
n. MAHOGANY DATE MUSSEL, Litho- phaga bisnlcata Orb., 1 inch (Florida to Argentina), p. 357.
o. LENTIL ASTARTE, Astarte snhequilatera Sby.. 1 inch (Arctic Seas to off Georgia). p. 376.
p. CORAL-BORING CLAM, Coralliophaga coralliophaga Gmelin, V/j inches (Gulf and West Indies), p. 382.
q. BOREAL ASTARTE, Astarte borealis Schumacher, 1 V2 inches (Arctic to Massachusetts; to Alaska), p. 375.
r. WAVED ASTARTE, Astarte undata Gould, 1 inch (Gulf of Maine), p. 376.
s. SMOOTH ASTARTE, Astarte castanea Say, 1 inch (Nova Scotia to Cape Cod, Massachusetts), p. 376.
t. NORTHERN CARDITA, Venericardia borealis Conrad, 1 inch (Labrador to North Carolina), p. 379.
u. GLASSY LYONSIA, Lyonsia hyalina Conrad, lA inch (Nova Scotia to South Carolina), p. 468.
v. LEA'S SPOON-CLAM, Feriploma leanum Conrad, 1 inch (Nova Scotia to North Carolina), p. 474.
v. PAPER SPOON C:LAM, Periploma papyratium Say, 1 inch (Labrador to Rhode Island), p. 472.
x. UNEQUAL SPOON CLAM, Periploma inequale C. B. Adams, 1 inch (South Carolina to Texas), p. 473.
y. CONRAD'S THRACIA, Thracia conradi Couthouy, 3 inches (Nova Scotia to New York), p. 471.
