548 Records of the Indian Museum. [Vol. VIII, 



Family ZONITIDAE. 



Subfamily HELICARIONINAE. 



Genus Cryptausteniat Cockerell. 



Cryptaustenia bicolor, n. sp. 



(Plate xlv, figs. 12 — 14). 



Locality. — Sadiya, Eastern Assam, No. 5982 (5. W. Kemp). 



This being a single specimen the shell has not been removed. 

 Shell (fig. 14) very globose and depressed, thin, transparent and 

 membranaceous, the black markings on the visceral sac are seen 

 through it ; sculpture none, surface glassy, colour ochraceous green ; 

 spire low, apex flatly rounded; suture very shallow; whorls 2|, 

 rapidly increasing ; aperture not to be seen with animal in the shell ; 

 peristome thin. 



Size : major diameter 9-5, minor diameter 70, alt. axis 5"0 mm. 



The animal (figs. 12, 13) in spirit is 16 mm. in length, ground 

 colour pale blue grey with black mottling on the side of the foot, 

 this is in strong contrast to the ochraceous ground of both the 

 right and left shell lobes, which are ornamented with distant 

 spots and lines and a well papillated surface. Neither of these 

 lobes are very large, and they would apparently leave a good deal 

 of the shell showing in life. The left shell lobe lies well on the 

 left side, it is narrow for some distance and just overlapping the 

 edge of the peristome up to where the broad lobe is developed. 



Foot narrow, sole divided; the central area quite pale in 

 colour, the outer margins grey. The mucous gland is narrow, 

 vertically oval, no defined overhanging lobe. Edge of foot with 

 narrow fringed margin and the usual two peripodial grooves. 



Genus Austenia, Nevill. 



Austenia aborcnse, n. sp. 



(Plate xlvi, figs. 2, 2a). 



Locality.— ^otMng, Abor Hills, 31-xii-ir (5. W. Kemp). 



vShell chesnut brown, with white apex, spatulate, smooth 

 shining, lines of growth indistinct. Whorls 2, the first very 

 small, the last expanding rapidly. 



Size: major diameter 23, minor diameter 16 mm. 



This shell is very like A . tigris of Preston from the Naga Hills, 

 and probably from the Eastern Naga. 



Mr. Kemp described it as follows: ''Slug C," 31-xii-ii. 

 Granulation of anterior part dull yellow with black interspaces. 

 Mantle area dull brown, rather pale. Posterior portions pale dull 

 brown with obscure or indistinct large brown or black flecks ; inter- 

 spaces of rugae black. Shell olive-green, a good deal exposed. 

 Eyestalks very dark brown. Sole pale brown, its dorso-lateral 

 margin vertically barred with pale brown and black. Common 

 under bark, under stones and behind the leaf-stems of plantain." 



