CRYPT ATJSTENIA. 183 



279. Cryptaustenia heteroconcha, H. Blf. (Helicarion) J. A. S. B. 



1871, 2, p. 45, pi. 2, figs. 8-8 b ; Pfr. (Vitrina) Man. Hel. vii, 1876, 

 p. 10 ; H. $ T. (Vitrina) C. I. 1876, pi. 152, figs. 8, 9. 



" Shell much depressed, with an oval periphery, thin, diaphanous, 

 membranaceous beneath, yellowish horny, greenish towards the 

 aperture, polished, arcuately obsoletely striate, irregularly subcos- 

 tulate towards the aperture; spire flattened, the apex scarcely 

 exserted ; whorls 3, rapidly increasing, the last dilated, scarcely 

 descending ; suture subimpressed, margined with white ; aperture 

 very oblique, oblong-ovate ; anterior margin of the peristome 

 strongly arcuate, right margin subundulate, basal margin mem- 

 branaceous. 



" Major diam. 17, min. 11, axis 5 mm. Height of aperture 8, 

 breadth 11 mm. 



" Hab. Near Darjiling." (H. F. Blanford, in Latin.) 



The height of the shell in the figure, measured from the base, is 

 about 8 mm. 



280. Cryptaustenia verrucosa, Godwin- Austen, Helicarion (Ho- 



plites), J. A. S. B. 1876, 2, p. 313, pi. 8, fig. 5. 

 [ Vide tig. 64 A, p. 184.] 



Shell thin and glassy, with about 4 whorls. 



" Animal dull purplish grey ; mantle-lobes, which can cover the 

 entire shell, are very minutely mottled, and have a finely papillate 

 surface. On the posterior margin are six blunt and wart-like pro- 

 cesses, arranged three on the right and three on the left side . . . 

 The mucous gland is larger and the upper lobe well pointed. 

 . . . The mantle is divided into three lobes, one of rectangular 

 outline is on the anterior left margin. The shell when the animal 

 is in motion is very slightly exposed. 



" Total length 1-25", mantle 0-60", mantle to extremity of foot 

 0-50", tentacles 0-20". 



" Hab. Under Toruputu Peak at 4000 feet. Found on decaying 

 wood during damp weather." (Godwin- Austen.} 



The animal, well figured in the original paper, is evidently 

 similar to C. bensoni and C. succinea, and has the same papillose 

 shell-lobes. 



[281. Cryptaustenia durrangensis, Godwin-Austen (Austenia), Mol, 

 Ind. ii, 1907, p. 172, pi. 108, figs. 5-5 b (shell), pi. Ill, figs. 7-7 c 

 (part animal and radula). 



Durrang District, Assam. 



Shell depressedly globose, not umbilicated; sculpture none, 

 surface glossy, crossed transversely by fine lines of growth ; colour 

 straw-colour ; spire very low, rounded, suture shallow ; whorls 

 2|, expansive ; aperture very oval, oblique ; peristome thin, 

 narrowly edged with white, columellar margin nearly vertical. 



Size : major diam. 10*5, alt. axis 3'8 mm. 



Animal (from a soaked specimen). Colour olivaceous with 

 mottlings on the foot ; the membrane of the branchial cavity has 



