CASSIS 



Species 29. (Mus. Cuming.) 



Cassis pyeum. Cass, testa ovato-globosd, plermique cras- 

 sksimd, anfractihus comexis, lesvigatk, superrw plus 

 nihmsve angulatis, ititerdimi subnodosis ; columelld 

 crassd, leevigatd, liaM obscure sulcata, labro reflexo, 

 incrassato ; aurantio-lacled, nigrkaide-fusco pone va- 

 rices macuhdd. 



TtiE PEAR Helmet. Shell ovately globose, generally very 

 tliiek, whorls convex, smooth, more or less angulated 

 romid the upper part, sometimes slightly nodose ; 

 columella thickened, smooth, obscurely grooved at 

 the base, lip reflected, thickened; orange cream-coloui-, 

 spotted with blackish-brown behind the varices. 



Lamabck, Anim. sans vert. (Deshayes' edit.) vol.x. p. 33. 

 Eadem. Cassis Zeylauica, Lamarck. 



Hab. New Holland. 



I cannot observe any character of sufficient permanence 

 to distmguish Lamarck's Zeylanica from C. pyrrnn. The 

 species is sometmies comparatively thin and lightly uo- 

 duled, but more frequently very much thickened, with the 

 enamel sometimes deposited in rude callous layers. 



Species 30. (Mus. Cummg.) 

 Cassis sulcosa. Cass, testa ovatd, spird subproductd, 

 acidd, anfractibus evaricom, supenie concavo-depressis, 

 sulcis regularibits equidistantibus undique eingulatis ; 

 columelld pUcato-rugaid et granosd, labro sapissime 

 valde incrassato, i/dics acute fortiter lirato ; griseo- 

 fdvd, ferrugineo-fusco maculatd etjlammatd. 

 The grooved Helmet. Shell ovate, spire somewhat 

 produced, sharp, whorls destitute of varices, con- 

 cavely depressed roimd the upper part, encircled 

 throughout with regidar, equidistant grooves ; colu- 

 mella pUcately ivi-inklcd and gi'anose, lip frequently 

 very much thickened, sharply and strongly ridged 

 within ; greyish fulvous colour, blotched and flamed 

 with rusty brown. 

 Lamarck, Anim. sans vert. (Deshayes' edit.) vol. x. p. 34. 

 Buccinum sidcosum, Born. 

 Cassidea sulcosa, Bruguiere. 

 Buccinum undulatum, GmeUn. 

 Hah. ilediten-anean. 



The common species of the Mediterranean, perfectly 

 distinct fi'om tlie C. iiijkda and others with which M. 

 Kiener seems to confound it. Owing to its ventricose 

 growth and the regidarity with which it is spii'ally grooved 

 throughout, it has somewhat the aspect of a Dolimii. 



September, 1848. 



