138 TESTACEOUS MOLLUSCA. 
C. Foveotatum. Sow. Jun. Z. P. 1840..—C. Lf. 65. Of a 
somewhat rounded oval, longer than broad, compressed, white, 
with forty-three ribs, the twenty-five posterior rounded and cre- 
nulated, the adjoinmg ones smooth and subangulated, and the 
extreme anterior concave and crenulated at the sides. 14)..1,5. 
— Swan River. 
C. Variecatum. Sow. Jun. Z. P. 1840.—C. I. f. 57. Oval, 
subyentricose, rosy, spotted with orange, red, brown, and white ; 
with forty-eight ribs of which the posterior are rounded and _ cre- 
nulated, the central very angulated and smooth, the anterior rather 
flattened and armed with oblique tubercles.  1+15.. 1445.—Phi- 
lippines. 
C. Unicotor. Sow. Jun. Z. P. 1840.—C. I. f. 29. § 42. 
Oval, ventricose, anteriorly subelongated, slightly emarginated, 
white, obscurely spotted with purple, the epidermis thin and 
brown : ribs numerous, rounded and minutely crenulated, the ex- 
treme ones flattened. 15%,..14.—Isle of Ticao. 
C. Macutosum. Wood. G. C. t. 52. f. 1. p. 218.—W. t. 5. 
f.17.—C. I. f. 63. Longitudinally oval, moderately thick, white 
mottled with livid red, about forty-eight narrow rounded radiating 
ribs, which are slightly broader than their interstices, and are 
armed with small tubercles only on about eight of the broader 
anterior ones, and on two or three of the extreme posterior, the 
central ribs being nearly smooth : inside white, with two short 
indistinct livid purple rays ; the hinge anteriorly stained with 
purplish crimson. 14. 
C. Muutistriatum. Sow. Z. P. 1833.—C. I. f. 59.  Ob- 
oval, pale fulvous, dotted with rufous : with numerous radiating 
strive, the posterior ones decussated, the anterior ones subgranular. 
9 8 
nee 
’C.Impourrum. Sow. Jun. Z P. 1840.—C. I. f. 6. § 66.— 
Reeve. t. 84. f. 6. Thick, wedge-shaped, subequilateral, narrowed 
at the dorsal edge, rounded at the ventral : white, obscurely 
spotted with brown, anteriorly banded with purple : with thirty- 
five subcrenulated dull ribs, the epidermis brown.  1.9,..13. 
— China. 
C. Oxyconum. Sow. Jun. Z. P.1840.—C. I. f. 9.— Reeve. t. 
84. f. 9. Oval, subventricose, narrow at the umbones, white 
spotted with red and brown, within white: with thirty-five ribs of 
which the eighteen posterior are strong, acutely angulated, crenu- 
lated on their posterior side and on the angles, the next nine acutely 
angulated, crenated at the angles but smooth at the sides, the 
extreme anterior ones narrow, smooth, with oblique tubercles. 
12..14.— China. 
C. Susetoncatum. Sow. Jun. Z P. 1840.—C. I. f. 61. 
Oval, subventricose, elongated, thick, slightly gaping anteriorly ; 
