NANINA. 129 



Section OXYTES, Pfeifler, 185"). 



X. OXVTES, Benson. PI. 42, figs. 21, 22. 



Umbilicated, obliquely subplicate ; brownish corneous ; whorls 

 5.V, the suture carinate margined, periphery acutely angulated. 



Diara. 47, alt. 17 mill. 



Eastern Bengal. 

 X. CYCLOPLAX, Benson. PL 43, fig. 23. 



Rather widely urabilicated, solid, closely striated above, sub- 

 decussated by more distant spiral striae ; reddish-corneous above ; 

 whorls 5, the periphery carinate, below the carina a chestnut 

 band, base greenish corneous. Diam. 41, alt. 17 mill. 



Sikkim Himalayas. 

 N. CASTOR, Theobald. PL 43, figs. 24-26, 34. 



Perforate, thin, striulate, and decussated by slight, almost 

 obsolete minute spiral lines ; corneous ; whorls 5J, suture linear, 

 )criphery acutely angulated. Diam. 30, alt. 11 '5 mill. 



Khasi Mts., India. 



N. Pollux, Theobald (figs. 24,25) and N. Cher raen sis, Blanford 

 'fig. 34), are only varieties of this form. 



X. BLANFORDI, Theobald. PL 43, figs. 27-29. 



Umbilicated, costulately striated, very minutely flexuously 

 granulated, undulating at the periphery; brownish corneous, 

 with a narrow white line at the periphery and suture ; whorls 5^, 

 periphery acutely angulated. Diam. 24, alt. 9 mill. 



Darjiling, India. 



Umbilicus not so open as in N. O.ri/tes and N. cycloplax, but 

 more so than in 0. Castor. 



N. SHANENSIS, Austen. 



Umbilicated, thin, sculpture fine longitudinal striae arranged 

 n about fourteen wavy indistinct spiral bands ; dark ochraceous 

 or pale umber, covered with a thin epidermis ; whorls 5, periphery 

 sharply keeled. Diam. 28, alt. axis 7 mill. 



Shan States, India. 

 Un figured. 



N. OCHTHOPLAX, Benson. PI. 43, fig. 30. 



Umbilicus partly covered, rather solid, obliquely rugosely 

 striate, obsoletely granulated, decussated by obsolete, distant 

 9 



