NASSA.— Plate IX. 



The pearly Nassa. Shell ovntely conical, whitish, 

 marbled with red-brown, longitudinally plicately 

 ribbed, transversely densely ridged, ridges noduled 

 on the ribs ; sjiire acuminatetl, a little channelled at 

 the sutures ; columella slightly excavated, lip thick- 

 ened, ascending, interior of the aperture ribbed. 



Biicciiiiini, wan/aritifenim, Dunker, Zeitschrift fiir Malac. 

 1847, p. fiO. 



Hnl,. ? 



A very elaborately sculptured and beautiful species. 



Species 60. (Mus. Cuming.) 

 Nassa pallida. Nasi, testa ncnnmiuto-coiiicil, pallida, 



olivacc'O et cimreo tiiictd ; anfractibm supc/'iie decUri- 

 bus et leviter anyulutis, transversini sidcatis et ruijoso- 

 striatis, lont/iindmaliter pUcato-costatis, costis ad an- 

 (jnlum. tubercnlatis ; colnnielld subcontortd, Inhro in- 

 crnssato, fauce Virata. 



The pale Nassa. Shell acurainately conical, pale, tinged 

 with olive and ash; whorls slanting and slightly 

 angled at the upper part, transversely grooved and 

 roughly striated, longitudinally plicately ribbed, ribs 

 tubercled on the angle ; columella somewhat twisted, 

 lip thickened, interior ridged. 



Powis, Pro. Zool. Soc. 1835, p. 96. 



Hah. Panama (in sandy mud at six fathoms) ; Cuming. 



An abnormal form of the genus, referable rather to 

 Biiccinum. 



