NANINA. 65 



b. Subangulated on periphery. 



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



Imperforate, delicately ribbed above, quite smooth below ; 

 pale sienna brown ; whorls 5. Diam. 2*3, alt. axis T6 mill. 



Lhota, Naga Hills. 

 N. ANIMULA, Godwin-Austen. PL 27, fig. 82. 



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

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



Kliasi Hills. 



* 

 * * 



N. LAILANGKOTENSIS, Godwin-Austen. PL 27, fig. 83. 



Narrowly umbilicated, covered with a strong epidermis, longi- 

 tudinalh' costulate, crossed by regular fine spiral sculpture ; 

 pale ochraceous ; whorls 5, subangular on the periphery. 



Diam. 4*8, alt. axis 2*3 mill. 



Lailangkote, Teria Ghat, etc. 



N. KE/AMAHENSIS, 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. 



N. 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. 



Bur rail range, Naga Hills. 



N. KUGA, 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 



