16 NANTNA. 



ture subpt'Mi-ly, lip it little thickened, the extremities joined by 

 n thin parietal callus. Diam. 45, alt. 24 mill. 



Nilgherry Mts., India. 

 N. ampullarioides, Reeve (fig. 8) is a synonym. 



N. AURIS, Pfr. PL 1, figs. 9, 10. 



Shell umbilicated, thin, closely obliquely striulate, yellowish 

 brown ; suture linear, veiy minutely crenulated ; whorls 4^, the 

 last not descending, subangulated at the periphery, the base 

 tumid, more shining. Diam. 47, alt. 22 mill. 



Koondah Mts., India. 

 N. INTUMESCENS, Benson. PL 1, fig. 



Umbilicus narrow, nearly covered, shell thin, plicate striate, 

 obsoletely decussated by revolving lines, yellowish brown, 

 corneous above the periphery, and around the umbilicus a little 

 lighter; whorls 4^, a little descending at the aperture, tumid 

 below and compressed around the umbilicus, lip white, subex- 

 panded. Diam. 32, alt. 22 mill. 



Mahabateshwar, India. 

 N. BAJADERA, Pfr. PL 1, figs. 12-14. 



Narrowly umbilicated, rather thin, diaphanous, strongly plicate, 

 greenish or reddish brown ; whorls 4, turgid, rapidly increasing, 

 the last descending, periphery obtusely angulated, lip white, 

 expanded. Diam. 24, alt. 17 mill. 



Bengal. 



N. ammonia, Val. (figs. 13, 14), is the juvenile of this species. 



N. RETRORSA, Gould. PL 1, fig. 15. 



Perforate rather thin, striate, with confluent, undulating, finely 

 rugose, subspiral impressed lines, light chestnut or yellowish 

 brown ; whorls 5J, rapidly increasing, the last acutely carinate, 

 base gibbous. Diam. 44, alt. 20 mill. 



Burmah. 

 N. IMMERITA, W. Blanford. PL 1, fig. 16. 



Narrowly umbilicated, reddish brown, thin, obliquely striate ; 

 whorls 4^, the last large, carinate, the carina more obtuse ante- 

 riorly, more tumid and somewhat shining below. 



Diam. 25, alt. 14 mill. 



So. Canara, India. 



