1865.] Contributions to Indian Malacology. 73 



Aperture 8 rnillem. broad, 2 high. 



Animal with a small mucus pore, and very small lobe above. 



Habitat — Irawaddy valley, Pegu. 



This pretty little species abounds near Thayet Myo, and occurs 

 throughout the Irawaddy valley in British Burmah. I do not re- 

 member meeting with it in Arakan. It is easily distinguished from 

 all others of similar form among Indian shells, by its very oblique 

 mouth, by the peculiar colnmellar margin of the peristome, and by 

 the strong lirate sculpture. I have much doubt as to whether it 

 should be assigned to Trochomorpha, the species of which group are 

 larger, and the animals somewhat different. 



Section Kaliella ? 

 11. N. conula, n. sp. 

 Shell subperforate, turreted, white, horny, thin, translucent, marked 

 with oblique sinuous subfiliform costulate striation, and, below the 

 centre of the whorl, with very fine spiral lines, only visible under a 

 powerful lens. Spire conical, apex rather obtuse, suture deeply sunk. 

 Whorls 6, very convex, keeled in the centre, the keel very fine, raised, 

 thread-like, opaque and white ; the last whorl bicarinate, the second 

 raised spiral line being below the periphery ; flatly convex beneath, and 

 marked by radiating stria? and concentric impressed lines. Aperture 

 oblique, tumidly and subangulately lunate, about equally broad and 

 high ; peristome thin ; maigins distant ; columellar nearly vertical, very 

 briefly reflexed at the penultimate whorl. 



Millem. inch. 



Diameter, If 0.07 



Height...... 2 0.08 



Habitat — Phoung ditto. Arakan. 



A minute species remarkable for its keeled and convex whorls. 

 Only 4 specimens were found. 



Genus HELIX. 



Section Plectopylis. 



12. H. Kaeenorum, n. sp. 



Shell sinistrorse, veiy widely umbilicatecl, discoid, flat above, solid, 



white, with rather irregular oblique pale chesnut streaks crossing the 



whorls, transversely and sinuously striated with decussating spiral 



