80 Contributions to Indian Malacology. [No. 2, 



Genus SUCCINEA. 



21. S. plicata, n. sp. 

 Shell depressly stibovate, very thin, irregularly, obliquely and more 

 or less coarsely plaited, pale amber in colour, horny. Spire short ; 

 apex minutely papillar. Whorls 2J ; the last about f of the entire 

 length. Aperture oblique, curved backwards at the base, nearly oval, 

 openly angulate above ; peristome simple ; columellar margin regularly 

 bow-shaped ; right margin rather straighter. 



Millem. inch. 



Length, 17 0.68 



Diameter, 9J 0.38 



Height, when laid upon the mouth, 6 millem. Aperture 14 millem. 

 long, 8 broad. 



Habitat — Tongoop, Arakan : one or two specimens, rather less 

 coarsely sculptured, occurred also south of Bassein in Pegu. 



This species approaches S. semiserica, Gould, but is distinguished 

 from that and from all other Indian species by its coarse sculpture. 

 It has also a larger spire than S. semiserica. It is not common : indeed 

 species of the genus Succinea are generally but very locally distributed 

 in India and Burma. 



Genus CLAUSILIA. 



22. C. fusifokmis, n. sp. 

 Shell not rimate, fusiform, horny, thin, white; obliquely, very 

 closely and finely costulately striated throughout. Spire diminishing 

 slowly at first above the middle, then rapidly attenuate towards the 

 acute apex ; suture simple, scarcely impressed, deeper towards the apex. 

 "Whorls 9, convex above, flattened below, the last very little narrower 

 than the penultimate. Aperture semioval, (nearly semicircular) ; upper 

 parietal plait very fine ; internal palatal teeth 7, the uppermost by far 

 the longest. Peristome thin, expanded, not continuous, the margins 

 being distant, and united by a thin callus - y columellar margin straight 

 and very long posteriorly. 



Millem. inch. 



Length, 23 0.92 



Diameter, 6 0.24 



Habitat — Arakan hills, west of Henzada. Very rare. 





