96 NANINA. 



N. SUBOPACA, Pfr. PI. 32, fig. 27. 



Perforation almost covered, rather solid, arcuately costulate 

 above, radiately striate below, subopaque ; light reddish corn- 

 eous ; whorls (> .',. Diam. 17, alt. 9 mill. Ceylon. 



Perhaps identical with the preceding species. 



N. SUBCONOIDEA, Pfr. PL 32, figs. 28, 29. 



Very narrowly perforate, thin, fragile, distinctly costulate 

 above, pellucid ; corneous ; whorls 5, periphery subangulate. 



Diam. 10*7, alt. 5'5 mill. 



Ceylon. 

 N. PATAN^E, Benson. PL 32, figs. 30-32. 



Perforate, thin, fragile, radiately rugosely striulate, diaphan- 

 ous, a little shining ; yellowish corneous ; whorls 5, the last 

 slightly descending in front, rounded compressed on the periph- 

 ery. Diam. 9, axis 4 mill. 



Darjiling. 

 N. CHOINIX, Benson. PL 32, fig. 33. 



Perforate, thin, obliquely striulate, with very slight close 

 spiral striae ; brownish corneous above, lighter colored below, 

 translucent ; whorls 6, suture submargined, the periphery 



obtusely subangulate. Diam. 17, axis 8 mill. 



Andaman Is. 

 N. SEQUAX, Benson. PL 32, figs. 34, 35. 



Perforate, rather thin, oblique^ striulate, with obsolete slight 

 very close spiral lines, shining, diaphanous ; livid olivaceous 

 corneous ; whorls 5^, suture with subchanneled margin, last 

 whorl scarcely descending in front, compressed-rounded on the 

 periphery. Diam. 18, axis 7 mill. 



Darjiling and Valley of Eungun. 

 N. HAINESI, Pfr. PL 32, figs. 36-38. 



Perforate, thin, smoothish, diaphanous, a little shining; 

 whorls 7, suture smooth, submargined, periphery subangulate. 



Diam. 29, alt. 12 mill. 



Siam. 

 N. REGULATA, Benson. PL 32, figs. 39, 40. 



Scarcely perforate, thin, obsoletely obliquely striulate, slightly 

 spirally lined, pellucid, highly polished; brownish corneous; 

 whorls 3J, rapidly increasing, subangulated on the periphery. 



Diam. 11, alt. 6 mill. Ceylon. 



