140 TESTACEOUS MOLLTJSCA. 



C. Subrugosum. Sow. Jun. Z. P. 1840.— C. I. f. 34. 

 <$• 71. Thick, oval, ventricose (by age subacuminated anteriorly,) 

 with thirty-three ribs of which the twenty-five posterior are 

 rounded and crenulated, the extreme anterior smooth and scarcely 

 elevated : epidermis brown. — Variety A. White with purple 

 spots. — Variety B. White but yellow posteriorly. 2J- . . 2 t 3 q. — 

 Ceylon. 



C. Alternatum. Sow. Jun. Z. P. 1840.— C. I. /. 64. 

 Obliquely oval, compressed, subexpanded anteriorly, white with 

 bands of yellow or yellowish brown spots under a brown epidermis : 

 with thirty- two ribs, the posterior crenulated and subangulated, 

 the succeeding anterior ones angulated but smooth posteriorly, 

 the extreme anterior muricated, the interstices convex and grooved 

 on each side. 2-f . . 2J-. — Philippines. 



C. Procerum. Sow. Z. P. 1833.— Reeve, t. 11. f. 23.— C. 

 I. f. 23. Ovate, the dorsal edge somewhat acuminated, pale 

 with brown spots, posteriorly rounded, anteriorly subangulated ; 

 with twenty-five radiating ribs of which the four posterior ones are 

 rather indistinct, the rest prominent, anteriorly angulated and 

 somewhat wrinkled, the central ribs flattened and obtusely angulated 

 on each side, the anterior ones posteriorly angulated, the interstices 

 flattened : anterior side grinning, the marginal teeth strong ; epi- 

 dermis brown. 3^ • • 3-^. 



C. Panamense. Sow. Z. P. 1833.— C. I. f. 21.— Reeve, t. 

 76. f. 21. — Beechey. Zool. t. 42. /. 7. Oboval, posteriorly 

 rounded, anteriorly subangulated, grinning ; the posterior and 

 central radiating ribs large and broad, at first angulated and finally 

 rounded, the anterior ones narrower and posteriorly crenated. 

 1-Ay. . 1^. — Panama. 



C. Elatum. Sow. Z. P. 1833.— Reeve, t. 83. /. 3.— C. I. 

 f. 3. Oval, oblique, smooth, very ventricose, yellow; with 

 numerous radiating grooves, of which the central except the an- 

 terior are indistinct ; the side areas are smooth and their margins 

 toothless : the ventral margin toothed : epidermis thin. A\ . . 4. — 

 California. 



C. Attenuatum. Sow. Jun. Z. P. 1840. Smooth, wedge- 

 shaped compressed, obliquely elongated, anteriorly somewhat flat- 

 tened, covered with obscure strise, toothed at the margin ; yellow 

 with red spots wiiich are stronger anteriorly ; white within. 

 2f .. 1|.— Ceylon. — Figured in Wood. G. C. t. 54./. 2, as 

 JBiradiatum. 



C. Multipunctatum. Sow. Z. P. 1833. — Reeve, t. 15. 

 f. 14. — C. I. f. 14. Oval, oblique, rather depressed, smooth, 

 polished, pinkish fulvous with numerous darker spots and .dots, 

 and very close radiating strioe; anterior dorsal margin sub- 

 angulated. 1 \ r . . 1 iV — China. 



