Dr. P. P. Carpenter on new Forms of Mollusca. 13 



Rcuto, dorsaliter varicoso, postice valde sinuato. Long. "24, long. 

 spir. -IS, lat. '1, div. 25'^. 



Nub. Panama (teste Jeivett). 



This very beautiful species is easily recognized by the varicose 

 lip, sloping off to a sharp edge ; by the deeply cut posterior 

 notch, giving the smooth mouth a hooked appearance ; by the 

 sharp ridges, traversed by distant spiral threads ; and by the 

 flesh-tinted orange colour. 



Mangelia cerea. 



M. testa M. hnmattE simili, sed textura cerea, aurantiaca, graci iioro, 

 aiifractihus tumidioribus, baud angulatis ; aufr. nucl. leevibus; 

 normalibus v., costis radiantibns baud acutis, iiiterstitia sequan- 

 tibus ; liris spiralibus validioribus, baud filosis, supra costas nodu- 

 losis, in interstitiis subobsoletis ; apert'ira, testa adulta, ?.,.. 

 Long. -25, long. spir. lA, lat. '1, div. 28°. 



Variat testa rufo-i'usca. 



Hab. Panama (teste Jeivett), 



Col. Jewett's unique specimen is not mature. It is distin- 

 guished from M. hamata by the smooth nucleus, waxen texture, 

 rounder whorls, more equal distribution of the contour between 

 ribs and interstices, and especially by the spiral sculpture, which 

 is faint in the hollows, but nodulose on the ribs. Mr. Cuming 

 has a specimen with the same texture, but of a rich browa 

 colour. 



Chemnitzia calata. 



C. testa satis magna, cinerea, elongata ; anfr. nucl. ?. . . ; norm, xiii., 

 planatis, suturis vix iuiprcssis ; costis radiantilius xx.-xxviii., 

 rectis, baud semper convenitntibus, subacutis, ad peripberiam 

 subito truncatis ; sulcis spiralibus in spira iv.-v., valde inipressis, 

 interstitia et costarum latera transeuntibus, juga baud su})eranti- 

 bus ; basi subito angustata, angulata, liiulis spiralibus circ. vi. 

 ornata ; apertura subquadrata ; columella satis torta. Long. "35, 

 long. spir. -3, lat. -09, div. 13°. 



Hab. West coast of North America (Jewett). 



This beautiful and unique shell was probably from Panama ; 

 but there was no locality-mark. It is remarkable for its deep 

 furrows and the suddenly shortened and spirally sculptured 

 base. It is much larger and broader than the uorthern C Vir^o, 

 and differs in details of sculpture. 



294 



