NASSA.— Plate XXYIII. 



Hob. St. Helena (in sandy mud at twenty fathoms) ; 

 Cuming. 



Allied to the European form of Nassa, represented by 

 the preceding species. 



Species 189. (Mus. Cuming.) 



Nassa cobticata. Nass. testa ovato-coniea, apird pro- 

 ductd, epidermide viridi-fuscd obtectd ; anfradibits su- 

 perne nodosis, ultimo antice cinguld subnodosd ornato, 

 postice nodulis coronato ; columella vix callosd, antice 

 biplicatd, labro extm marginato, intus lirato. 



The baek-coveked Nassa. Shell ovately conic, pro- 

 duced at the spii'e, covered with a greenish-brown 

 epidermis ; whorls nodose at the upper part, last whorl 

 ornamented in front with a subnodose belt, posteriorly 

 coronated with nodules ; columella but little callous, 

 two-plaited in front, lip margined outwardly, ridged 

 within. 



A. Adams, Pro. Zool. Soc. March 1851. 



Hab. New Zealand. 



A distinct typical form of Nassa, covered with a thick 

 dark olivaceous epidermis. 



