NANINA. 



b. Subangulated on periphery. 

 N. LHOTAEXSIS, Godwin-Austen. PL 27, fig. 81. 



I m perforate, delicately ribbed above, quite smooth below ; 

 pale sienna brown ; whorls 5. Diam. 2'3, alt. axis 1-6 mill. 



Lhota, Naga Hills. 

 X. ANIMULA, Godwin-Austen. PI. 27, fig. 82. 



Sculpture irregular, minute; color pale horny; whorls 5, 

 suture moderately impressed. Diam. 2'6, alt. axis 1-9 mill. 



Khasi Hills. 



*** 



N. LATLANGKOTENSIS, God win- Austen. PL 27, fig. 83. 



Narrowly umbilicated, covered with a strong epidermis, longi- 

 tudinally costulate, crossed by regular fine spiral sculpture ; 

 pale ochraceous ; whorls 5, subangular on the periphery. 



Diam. 4-8, alt. axis 2'3 mill. 



Lailanglcote, Teria Ghat, etc. 



N. KEZAMAHENSIS, Godwin-Austen. PL 27, fig. 84. 



Moderately umbilicated, covered with a strong epidermis, 

 sculpture rather coarse, decussated, like cloth, the longitudinal 

 ribbing the strongest ; color bleached ; whorls 5^, the last sharply 

 keeled on the periphery and flattened on the base. 



Diam. 4-1, alt. axis 2 mill. 



Kezamah, etc., Naga Hills. 



X. BURRAILENSIS, Godwin-Austen. PL 27, fig. 85. 



Narrowly perforate, decussated, color pale dull ochraceous; 

 whorls 5, the periphery sharply keeled. Diam. 5'7, alt. 2-4 mill. 



Burrail range, Naga Hills. 



X. RUGA, Godwin-Austen. PL 27, fig. 86. 



Narrowly perforate, with strong epidermis; sculpture like 

 cloth, irregular, the longitudinal ribs the strongest, smoother 

 below ; pale horny brown ; whorls 5, the last angular at the 

 periphery ; aperture with a tooth-like process directed obliquely 

 backward, just within, on the lower margin. 



Diam. 3'6, alt. axis 1/8 mill. 



Naga Hills ; Shiroifurar Peak, 9000 ft. alt. 



The apertural tooth appears to be formed during periods of 

 arrested growth, the old edge of the aperture being apparent 

 5 



