92 NANTNA. 



N. SUBCORNEA, Pfr. 



Scarcely perforate, thin, smooth, whitish corneous ; whorls 7J, 

 suture thread-margined. Diam. 13'6, alt. 6 mill. Siam. 



Unfigured. The illustration in Conch. Indica is believed by 

 Godwin-Austen to represent a young N. resplendens, from which 

 this is distinguished by its more numerous and more closely 

 wound whorls. 



N. ATRICOLOR, Austen. PL 30, figs. 77, 78; PL 31, fig. 79. 



Imperforate, smooth, glossy ; olivaceous, ochre or umber- 

 brown, more highly colored near the peristome ; whorls 6j, 

 periphery rounded, flat at base. Diam. 22'5, alt. axis 9*4 mill. 



N. Cachar Hills, India. 



The animal is black, the extremities of the tentacles paler. 

 The shell varies a little in its dimensions, height of spire, etc., 

 and is closely allied to N. resplendens, Phil., perhaps a mere 

 variety of that species. 



N. CACHARICA, Austen. PL 31, figs. 85, 86. 



Subperforate, thin, glassy, striate ; pale sienna-brown ; whorls 



5, suture moderate, base flattened. Diam. 18'8, alt. axis 7 mill. 



Munipur Hills. 



The base is flatter and the apex less rounded than in N. atri- 

 color. 



Yar. GLAUCA, Austen. Fig. 85. 



Umbilicus rather open, not striate ; color very pale greenish 



ochre. Diam. 22'8, alt. axis 8 mill. 



Harmutti, Dajla Hills, Assam. 

 N. BIRMANA, Pfr. PL 31, fig. 80. 



Perforate, thin, obscurety radiately striatulate, scarcely shin- 

 ing; light yellowish corneous; whorls 6^, suture thin margined, 

 last whorl obtusely angulate on the periphery. 



Diam. 28, alt. axis 12 mill. 



Tenasserim and Mergui, Burmah. 

 N. Acerra, Benson, is a synonym. 



N. LUBRICA, Benson. PL 31, figs. 81, 82. 



Perforate, rather thin, smooth, obsoletely radiately striatulate ; 

 orange-brown or olivaceous ; whorls 5^, suture impressed; aper- 

 ture pearly white. Diam. 24, alt. 10 mill. 



Darjiling, Himalayas. 



