NANINA. 95 



N. INFANS, Pfr. PL 32, fig. 18. 



Subperforate, rather solid, smooth, shining ; whitish; whorls 

 5, suture distinctly margined, columella a little thickened, white. 

 Diam. 5-6, alt. 3 mill. 



Borneo, Labuan, Java. 

 N. adnata, Mousson, is a synonym. 



N. PLANIUSCULA, Hutton, PL 32, figs. 19, 20. 



Perforate, thin, polished ; brownish corneous ; whorls 5, 

 periphery rounded. Diam. 3'3, alt. axis 1-7 mill. 



Simla, Himalayas. 

 N. CORYLUS, Reeve. PL 32, fig. 21. 



Scarcely perforated, lightly closely costulate-striate ; oliva- 

 ceous chestnut; whorls 5, suture impressed. 



Diam. 16, alt. 10 mill. 



Ceylon. 

 N. ORNATISSIMA, Benson. PL 32, fig. 22. 



Perforate, closely obliquely costulate-striate above, smooth, 

 polished, obsolete^ radiately striate below; yellowish corneous, 

 lighter on the base; whorls 7, suture submargined, periphery 

 obsoletely angulate. Diam. 16, axis 8 mill. 



Pankabari, near Darjiling, India. 



N. VIDUA, Blanford. PL 32, figs. 23, 24. 



Imperforate, closely costulate above, smooth and polished 

 beneath ; light corneous above, lighter on the base ; whorls 8, 

 slowly enlarging, periphery angulated ; aperture scarcely white 

 margined within. Diam. 17, axis 9'5 mill. 



Khasi and Nag a Mts. 



A minor variety has more elevated spire. 



Diam. 14, alt. axis 9 mill. 



Nevill makes this a variety of N. climacterica, Benson (p. 23). 



N. PARTITA, Pfr. PL 32, figs. 25, 26. 



Perforate, somewhat solid, very closely unequally costulate 

 above; fulvous corneous; whorls 5J. Diam. 13, alt. 7 mill. 



Ceylon. 



N. marcida, Benson, is a sj^nonym. A larger, thinner variety 

 occurs, of lighter color. Diam. 15, alt. 7'6 mill. 



A still larger form, referred here by Nevill, follows. 



