TRIBE CARDIACEA. 147 
C. Rurescens. Lam. 14.—List. t. 347. f. 185? Oblong, 
posteriorly contracted and sinuous, reddish fulvous with seventeen 
ribs armed with imbricated flattened scales ; margin waved. —Ge- 
neral appearance of last.)\—Gulph of Nicoya. 
C. VariecaTa. Brug—Cuama Catycunata. D. p. 217.— 
List. t. 347. f. 184.—Ch. f. 500, 1.—W. #. 9. f. 10.—Carpita 
C. Lam. 15.—Sow. G'.— Reeve. t. 89. f. 2. Oblong, anteriorly 
retuse, increasing in breadth towards the margin, white with brown 
crescent spots and twenty or twenty-one ribs of which the 
lateral ones are crenated, the central armed with arched imbricated 
depressed scales ; white within with the margin plaited by the ex- 
terior ribs. 2.—Atlantic Ocean.? 
C. Noputosa. Lam. 17.—E. t. 234. f. 1.—Ch. f. 1999 to 
2002 ?--Del. t. 11. f. 8. Oblong trapeziform, gibbous, reddish 
rufous with sixteen rounded ribs armed with nodose crenulations : 
margin entire. 143.—New Holland.— Chinese Variety. Mottled 
with white and rufous. 
C. Caryceutata. Brug. p. 408. (excluding his synonym of 
Adanson.)—C. Sinvata. Lam. 18.—Cuama Catycunata. Lin. 
1138.— An. Gual. t. 90. F?—Poli. 2. t. 23. f. 7, 8, 9. Oblong, 
whitish, posterior side with two sinuosities one deeper than the 
Lamarck, I know not, but as to their identity with the Squamosa of 
Mr. Sowerby (in Tank. Cat.) there can be no doubt. They are of 
an oblong shape with the ventral and dorsal edges almost parallel 
and little curved. The ribs are in number sixteen, armed with 
depressed scales, convex, and not broader than their interstices. 
The lunule is minute and the inside pure white. The exterior under 
a tawny epidermis is either dirty white or orange red. The state- 
ment of Lamarck, that the ribs are but ten or twelve and that it is 
contracted and sinuated posteriorly, would agree better with Mr. 
Sowerby’s Squamifera, which I will now describe. 
C. Sauamirera. Sow. in Tank. Cat. Oblong, contracted 
and sinuated posteriorly, expanded anteriorly; uniform purplish 
red or yellow, about twelve convex ribs armed with strong erect 
scales, the three subanterior ribs infinitely the larger, interstices 
rather broad : lunule minute : uniform whitish within, the margin 
slightly waved. 2. 
°C. Supaspera. Lam. 16.—Del. t. 11. f. 9.—C. Varrecara. 
Brug. no. 6. Oblong, gibbous, whitish, with twenty-three rufous 
imbricated scaly ribs ; the scales arched semi-erect and subacute : 
margin crenated. 13.—As Deshayes declares that the Variegata of 
Brugiereis Lamarck’s C. Calyculata, and the latter author founds 
this species on the identical specimen which Brugiere has described, 
it is probable that this species may be only a variety of the last. 
L 2 
