56 NANINA. 



encircled by two carinse, one peripheral, the other sutural ; 

 whorls 8, the last striulate, shining below. 



Diam. 6, alt. axis 5 mill. 



Province Kuangsi, China. 



Is N. Ulirata, Gredler, not Blanford. 



C. Openly umbilicated. 



N. SUBBTLTRATA, Godwin-Austen. PL 25, fig. 28. 



Rather openly perforate, covered with a strong epidermis ; 

 very finely spirally ribbed, crossed by irregular growth-lines ; 

 dull ocluaceous brown; whorls 5, the last encircled with two 

 ribs, the upper ones with one. Diam. 2'7, alt. axis 1-3 mill. 



Andaman Islands, 

 cc. Apex obtuse. 

 N. BILIRATA, Blanford. 



Perforate, rather solid, corneous, transversely striated; whorls 

 7, the upper ones with a single carina, the last acutely bicarinate 

 at the periphery. Diam. 6, axis 4'5 mill. 



Shevroy and Nolamully Hills, India. 

 The figure of this species is not accessible to me. 



ccc. Spiral ribs indistinct ; umbilicated. 



N. TERTIANA, Blanford. PI. 25, fig. 29. 



Perforate, thin, pallid corneous, striulate ; whorls 6, not cari- 



nate. Diam. 2-25, alt. 1'75 mill. 



Nilghiri Hills, India 

 N. SRIMANI, Godwin-Austen. PI. 29, fig. 30. 



Closely umbilicated, with four or five indistinct spiral ribs and 

 ' rather coarse oblique lines of growth; ochraceous brown ; whorls 

 5. Diam. 3-9, alt. axis, 2'2 mill. 



Munipur. 

 Differs from N. tertiana in its spire and narrower umbilicus. 



N. TJVIDA, Godwin-Austen. PI. 25, fig. 31. 



Narrowly umbilicated ; with wavy longitudinal ribs, crossed 

 by fine indistinct spiral lines, more distinct on the apex, base 

 with well-marked concentric ribs ; pale sienna-brown ; whorls 5. 



Diam. 2'8, alt. axis 1*7 mill. 



Teria Ghat, south base of Khasi Hills. 



