112 NANINA. 



a member of this group, where it is placed by Pfeiffe^ and is 

 perhaps a Macrochlamys. 



Var. ANDERSONIANA, Nevill. Figs. 10-12. 



Less depressed than the type, periphery scarcely angulated. 



Khasi and Naga Hills, East Gachar, Ava, etc. 



N. SHISHA, Austen. PI. 37, figs. 13, 14. 



Imperforate, very thin, fragile, transparent, finely costate 

 above, smooth below; light greenish corneous; whorls 5, the 

 periphery sharply angulated. Diam. 15, alt. 7'5 mill. 



Khasi and Naga Hills, India. 



Appears to be more nearly related to Trochonanina than to 

 this group, of which it is made a member by Godwin-Austen. 



N. MINUTA, Austen. As Helicarion Manual, I, 182, t. 42, f. 29. 

 N. CHRISTIANA, Theobald. As Helicarion, Manual I, 176, t. 40, 



f. 31,32. 

 N. ASSAMICA, Austen (unfigured). Assam. 



Section MICROCYSTIS, Beck, 1837. 

 A. Imperforate. 

 a. Not carinate. 

 N. GLABERRIMA, Semper. PL 37, figs. 15-17. 



Imperforate, thin, scarcely striulate, very shining; bright 

 brown ; whorls 5^-6, suture submargined, last whorl subangu- 

 late. Diam. 4-5, alt. 2'5 mill. 



Ins. Luzon, Philippines. 

 N. ELECTRINA, Jacq. PL 37, figs. 18-20. 



Imperforate, smooth, shining ; rufous, irregularly radiate with 

 lighter color; whorls 4^. Diam. 9'5 mill. 



Ins. Guam, Moluccas. 

 N. ADAMSI, Pfr. PL 37, figs. 22-25. 



Imperforate, lightly striulate, opaque, glossy ; yellowish fulv- 

 ous or yellowish white, unicolored or variously banded and 

 radiated with darker fulvous or chestnut ; whorls 3J, base sub- 

 planulate. Diam. 11, alt. 6 mill. 



Ins. Pitcairn and Opara. 



It is N. ornatella, Pfr., not Beck, N. realis, Muhlf., and N. 

 filiceti, Beck. 



