NANINA. 55 



B. Shell globoxe, whorls tumid, with many fine close-set 

 spiral ribs. 



X. RIMICOLA, Benson. PI. 25, rigs. 20, 21. 



Scarcely perforate, thin, fragile, diaphanous, light corneous, 

 obliquely stimulate, with regular fine revolving strise ; whorls 

 67] 6, suture lightly impressed. Diam. 4'5, axis 4 mill. 



N. W. Himalayas, Darjiling, Khasi Hills. 



Sometimes the periphery is slightly obtusely angulated. 



X. CIRCUMFILARIS, Morelet. PI. 25, fig. 22. 



Rimately subperforate, thin, light fulvous, lighter below, 

 smooth, very lightly thinly striate ; whorls 6, the last obtusely 

 angulated on the periphery. Diam. 3'8, alt. 3'3 mill. 



Anjouin, Comoro Is. 



b. Sides convex ; spiral ribbing less regular. 



N. INJUSSA, Blanford. PL 25, fig. 23. 



Scarcely perforated, rather thin, light corneous, obliquely 

 striate above, radiately striate below; whorls 5A, the last evan- 

 escently angulated on the periphery. Diam. 3'25, alt. 3'25 mill. 



Nilghiri Hills. 



bb. Globosely turbinate, very small. 



N. FEBRILIS, Blanford. PL 25, fig. 24. 



Very narrowly perforate, spirally lirate ; whorls 44, smooth 

 below. Diam. 1'5, alt. 1*25 mill. 



Kalryenmully Hills, Central India. 



C. Shell depressly conoid, whorls turreted, with one or two spiral 

 ribs; apex flat. 



X. TRICARINATA, Blaiiford. PL 25, fig. 25. 



Openly perforate, thin, light corneous, obliquely stimulate, ob- 

 soletely decussated below ; whorls 4, the last with three strong, 

 thread-like spiral carinse, the others with two carinae. 



Diam. 1-66, alt. 1 mill. 



Nilghiri Hills. 

 X. KUANGSIENSIS, Tryon. PL *5, figs. 26, 27. 



Perforate, thin, subpellncid, scarcely shining; yellowish white; 



