TRIBE CARDIACEA. 137 



subangulated ; white spotted with brown, the ribs numerous 

 and flattened, the five posterior crenulated : interstices narrow. 

 /// 



9 . . X.. 



°C. Paucicostatum. Sow. Jan. Z. P. 1840.— C. I. f. 20.— 

 Reeve, t. 86. f. 20. Rounded, ventricose, subequilateral, thin, 

 yellowish white, waved with brown : with sixteen flattened smooth 

 distant ribs which are armed in the middle with sharp tubercles ; 

 the interstices flattened. 1 . . 1-A-. — Malta. 



C. Multispinosum. Sow. Jim. Z. P. 1840.— C. I. f. 38. 

 Rounded, ventricose, thin, anteriorly slightly gaping, pale fulvous, 

 rosy at the margin and white within ; with thirty-three smooth 

 ribs, which are angulated on both sides ; the spines numerous and 

 acute ; the interstices granular, elongated at the margin : dorsal 

 edge tumid. 2^ . . 2-ii. — Philippines. 



C. Exasperatum. Sow. Jwi. Z. P. 1840.— C. I. f. 37. 

 Ventricose, rounded-subquadrangular, white tinged with rose- 

 colour at the margins ; finely grooved ; with numerous spines 

 between the sulci. -i§ . . 1. — Swan River. 



C. Papillosum. Poll. t. 16. /. 2, 3, 4.— C. I. f. 59.— Phil. 

 p. 51. — C. Polii. Payr. p. 57. Small, sub-orbicular, convex, 

 whitish, anteriorly longer : with about twenty-four subequal flat- 

 tened ribs, which are armed with short granular more or less distant 

 papillae ; interstices narrow, with impressed dots : inside spotted 

 with purplish red. \. — Mediterranean. 



C. Graniferum. Prod, fy Sow. Z. J. 4. — Reeve, t. 86. f. 

 17. — C.I.f. 17. Suborbicular, anteriorly angulated, white with 

 sixteen radiating grained ribs, the anterior Ox-.""* crowded, the pos- 

 terior ones with larger granules ; the interstices with elegant longi- 

 tudinal striae. \^ . . t 5 q. — Pacific. 



C. Belcheri. Prod. Sf Sow. Z. J. 4. tab. 9. f. 3. Obovate, 

 suboblique longer than broad, orange-yellow, redder anteriorly, 

 with twenty-four radiating ribs of which the anterior have muri- 

 cated, the central serrated, and four or five posterior ones distantly 

 tuberculated teeth, but all placed on the anterior edge, and only 

 glossy posteriorly : posterior margins acutely serrated. 1-f ^ . . 1^. 

 — California. 



C. Senticosum. Sow. Z. P. 1833.— Reeve, t. 84. f. 10.— 

 C. I.f. 10. Suborbicular, rather compressed, whitish, variegated 

 with purplish brown ; with about forty radiating ribs, of which the 

 thirteen posterior ones are posteriorly granular, then two or three 

 granular on each side, the rest anteriorly angulated, granular, the 

 grains oblique and the anterior ones larger ; the interstices narrow 

 and transversely wrinkled : anterior side grinning, the marginal 

 teeth strong and purplish. 1^-. . 1£.— S. America. — Akin to 31u- 

 ricatam. 



