









66 Contributions to Indian Malacology. [No. 2, 
Contributions to Indian Malacology, No. V. Descriptions of new land 
shells from Arakan, Pegu, and Ava ; with notes on the distribution 
of described species.—By Wi11am T. Buanrorp, A. &. S. I, 
FGA. 
[Received 11th March, 1865.] 
Orper,—PULMONIFERA. 
Family Helicide. 

Genus NANINA. 
Section Macrochlamys. 
1. N. compiuviatis, n. sp. 
Shell perforated, subglobosely depressed, thin, light-coloured, horny, 
smooth, polished, diaphanous, very minutely striated. Spire convex ; 
suture in a deep and rather broad groove, which becomes obsolete at 
the apex. Whorls 43, convex, sharply angulate above at the edge of 
the sutural groove; the last not descending near the mouth. Aperture, 
oblique, irregularly lunate, of the same form as the whorls, nearly 
equal in height and breadth; peristome thin, in one plane, simple ; 
margins distant, columellar briefly reflexed at the perforation. 
Millem. inch, 
Maori diameter, ep seisncacnueme ass 10 0.4 
Maimeri itto; mites. «teense 9 0.36 
Sas». aeos) Sauehen ee ere 63 0.26 
Aperture 5 millem. broad. 
Habitat —Arakan hills. 
This shell is closely allied to N. convallata, Bens. of the Tenasserim 
provinces, and replaces that shell in Arakan. It is distinguished by 
the smaller number of whorls, while the singular sutural channel is 
even more developed, but it varies slightly in size. 
2. N. NEBULOSA, n. sp. 
Shell minutely perforated, conoidly depressed, thin, light horny, 
not polished, minutely striated, and possessing a dull greasy lustre. 
Spire conoidal ; apex rather acute ; suture impressed. Whorls 6, convex 
above; the last rather broader, subangulate above the periphery 
rounded beneath. Aperture slightly oblique, lunate, the breadth 
greater than the height ; peristome simple, thin; columellar margin 
vertical, slightly reflexed, 
