TRIBE CONCHACEA. 103 
cealed, and the markings consisting of waved ferruginous lines 
13..13.—Indian Ocean. 
C. Dispar. Desh.—Venus D. D. p. 199. Oval not con- 
vex, with the anterior extremity more or less obliquely ribbed, and 
the space not thus occupied transversely striated : lunule more or 
less lanceolate and brown. 14.—Variety. A. (Muscaria. Lam. 
59.—Ch. f. 1981, 2.) Whitish with scattered rufous spots, and 
the anterior slope lettered.— Variety. B. (Puxiicaris. Lam. 60. 
Del. t.9.f.5.) With scattered rufous spots, or white mottled 
with purple and chesnut.—Variety. C. (Mixra. Lam. 61.—L. 
t. 271. f. 2.) Bluish white, with chesnut spots. 
C. AppreviaTa. Lam. 62.—Del. t. 9. f. 1. Obovate and 
retuse at the anterior end, on a whitish ground covered with red 
linear forked markings, some of which are barred transversely so 
as to resemble letters, with numerous transverse strie, and a few 
oblique longitudinal ones, which diverge anteriorly within, with a 
dark brown spot under the beaks. 1.—Jndian Ocean. 
C. Histrio. Gray Ann. Phil. 25.—Venus H. Gmel. 3287. 
= Dp. 197. We ty Sf. 80.22Ch.f407.— 2 tai 2B0a-find, 
Suborbicular, with raised acute transverse slightly reflected striz, 
white mottled and rayed with brown, and striped with chesnut on 
the anterior slope, of which the depression is obsolete: lunule 
cordiform, impressed and ferruginous. 13.—£. Indies. 
C. Excisa.—Venus. E. Chem. f. 400, 1.—D.p. 195.—W. t. 
8. f. 82. Suborbicular, longer than broad, inequilateral, very con- 
vex, pure white, with crowded raised transverse rib-like strie ; liga- 
mental edge very sloping, ligament sunken; beaks much 
incurved; lunule large, indistinct, and ovate-cordiform : inside 
white, the margin entire.—12..14.—Tranquebar. 
C. Suucara.—Circe 8. Gray in Analyst, 1838. Cordate, 
trigonal, rather compressed, solid, yellowish brown, with two or 
three brown rays not reaching the umbo, finely radiately striated, 
and with close blunt regular concentric ridges, crossed by some ob- 
scure curved grooves on the ends ; lunule lanceolate, lineated with 
brown; inside rosy white. Somewhat like Scripta, but rather 
more convex, striated, and the umbo regular and not flattened. 
C. Crocea.—Crirce C. Gray in Analyst, 1838. Cordate, 
roundish, rather convex, slightly concentrically grooved, yellow, 
with obscure brown lines on the anterior side; inside yellow, no 
syphonal inflection. 
C. Puanata.—Circe P. Gray in Analyst, 1838. Oblong, 
sub-quadrate, rather narrower posteriorly, browner and more 
rounded anteriorly. Compressed, thin, pellucid white, smoothish, 
very finely and closely striated concentrically: inside white ; no 
syphonal inflection. 
C. Lamarkir.—Cuione L. Gray in Analyst, 1838. Oblong, 
