PUEPURA.— Plate VII. 



more prominent ; white, more or less stained mth 

 rusty brown which is darker towards the apex, and 

 covered with a tliick fibrous epidermis, aperture 

 wliite. 



Fusus Purpuroidiis, D'Orbigny, Voyage dans I'Ame- 

 rique Meridionale, PI. 63. Fig. 1. 

 Hnl). St. Elena, West Columbia (in the crevices of rocks 

 at low water) ; Cuming. 



I include this species under the head of Purpura, in con- 

 quence of its unquestionable generic affinity with the P. 

 kmquifornm, and dedicate it to the illustrious traveller 

 and natui-aUst, the adoption of whose specific name would 

 involve an inconsistent tautology. 



Species 33. (Mus. Cuming.) 

 PuRPUEA ECHINATA. Purp. testd ovatd, basi umhilicatd. 



anfractibus transversim undique elevato-striatis, sfriis 

 subtilissime squamatis, mperiie fsubangulatis, infra aii- 

 guluni quadriseriatim tubercalalis, tuberculis partis, no- 

 diformibm ; extus pallide rMgirwso-fuscd, intm attd. 



The prickly Purpura. Shell ovate, umbUicated at the 

 base, whorls transversely elevately striated through- 

 out, striae very finely scaled, slightly angulated at the 

 upper part, encircled beneath the angle with four 

 rows of small nodule-Uke tubercles ; exterior pale 

 rusty brown, interior white. 



De Blainville, Nouv. Ann. du Mus. pi. 11 f. 2. 



Eab. ? 



A very characteristic and well-defined species, quite dis- 

 tinct from the P. ecUnulata of Lamarck, of which M. Des- 

 hayes appears to have omitted mention. 



