CYPPwEA. 13 



carneola, etiam variat testa cylindrical minori, flavidA,, dento- 

 rum interstitiis liaud purpureis. 



34. arenosa, Gray, (f. 9, 10). — C. testa ovata, lata; lateri- 

 bus arenaceis, callosis, ad dorsum linea castanea, marginatis ; 

 dorso elevato, subcinereo, rubro obscure fasciato ; extremi- 

 tatibus obtusis, antica declivi, postica vix ernarginata ; basi 

 subplanulata, extremitatibus prominulis ; apertura angusta, ; 

 dentibus parvis, circa 24 et 30 labio antice excavate 



Note. — The more cylindrical form of carneola, with the 

 basal callus very little spread at the sides, seems to rank 

 with argus, Talpa, etc. The variety we have figured at 332 

 is from the Mauritius, and has no purple between the teeth, 

 yet unmistakably belongs to the species to which it is 

 assigned. 



35. leucodon, Broil, (f. 19, 20). — C. testa crassa, subpy- 

 riformi, ventricosa; dorso gibboso, elevato, rufescente, aut 

 flavescente-fusco, guttis rotundis albidis distantibus aspero, 

 basi arnbulacro dorsali lato, laterali convexo, obscure tuber- 

 culato, pallidiore ; transverse subtilissime striata, terminis 

 productis, acuminatis ; tuberculis rotundis, sinuatis ; denti- 

 bus utrinque elongatis, albis, distinctis, 28-30 circa, intersti- 

 tiis profuudis ; plica terminah antice trifida. 



36. sulcidentata, (f. 21, 22, 23). — C. testa crassissima, 

 ovata, brevi, gibbosa, callo dorsali ad latera dorsi extenso; 

 dorso elevato, griseo vel flavido, obscure quadrifasciato, basi 

 et lateribus fulvis ; terminis obtusis, callosis, ad margines 

 excavatis ; apertura angustissima. ; dentibus latis, elongatis, 

 interstitiis angustis profundissimis 21 et 25 circa. 



Note. — Leiicodon, sulcidentata. The first of these species 

 is the remarkably unique shell in the British Museum, which 

 differs from all others in various characters, particularly in 

 the flattened tubercles on the base, seemingly resulting 

 from a thickening over the white spots of the surface co- 

 vered. The broad teeth and deep undercut interstices are 

 only approached in character by those of sulcidentata, which 

 for that reason chiefly may be considered as bearing the 

 nearest affinity to leucodon among the cowries. The other 

 unique, Barclayi, has the teeth, particularly of the outer lip, 

 also deeply undercut, but in other respects has no resem- 

 blauce to the above. 



37. vitellus, Linn., (f. 31, 32, 33). — C. testa ovata, dorso 



