202 



ZOXITIDyE. 



in a depression, the ridge of the foot behind being on a level with 

 the shell. Generative organs immature." 



Length of specimen in spirit about an inch. 



Hah. Pankabari, at foot of Himalayas, Sikhim. 



Teeth in radula + 100 . 2 . 10 . 1 . 16 . 2 . 100+ ( + 118 . 1 . 118). 

 All gradually decreasing in size from centre to margin. Jaw 

 straight, with a very slight central projection. 



*304. Girasia dalhousiae, Godidn- Austen, Mol. Ind. i, 1888, p. 224, 

 pi. 01, figs. 1, 1 « (animal), pi. 62, figs. 4, 4 a (jaw and teeth). 



" The shell is of an olive-brown colour, convex above, oval on 

 the periphery, membranaceous, broader than in the type or in 

 G. crocea, with a very thin white shell}' lining. 



" Major diam. 13, minor 8 mm." 



Hab. Dalhousie, Chamba Hills, west Himalayas (Theobald). 



" The animal in spirit is of a pale ochre tint, with no markings 

 of any kind. The mantle as in typical Girasia, the thin shell 

 showing in an oval opening of the shell-lobes." Length in spirit 

 30 mm. 



Eadula thus arranged : 128 . 2 . 14 . 1 . 14 . 2 . 128 (144 . 1 . 144). 

 Ehachidian tooth very narrow, long and tricuspid ; inner laterals 

 much curved and tricuspid, the inner cusp indistinct, points 

 directed rather outwards ; outer laterals bicuspid, the outer cusp 

 lai-ger and rounder in form than the inner. Jaws with a very 

 slight central projection. The teeth differ from those of the more 

 Eastern species. 



*305, Girasia burtii, Godwin- Austen, Helicarion (Hoplites), ,/. A. S. B. 

 1876, p. 314, pi. 8, fio'. 6 (shell) ; id. P. Z. S. 1880, p. 294 ; id. 

 Mol. Ind. i, 1888, p. 222, pi. 61, fio-. 2 (shell), pi. 62, figs. 3, 3 a, 

 3 b (teeth of radula, jaw, and genitalia ; these are by error 

 marked G. radha). 



Shell dull white, very horny in texture, the apex scarcely 

 developed, outline rounded above. Major diam. 0"30" (8 mm.). 

 The shell is figured as oval in shape, with the apex turned over in 

 the middle, not towards one side as in many foi'ms of Girasia. 



Bab. Borelli Tea-garden, near Tezpur, Assam (Burt) ; also 

 Paniputer Tea-garden, north of the Brahmaputra River in the same 

 district. 



Animal grey-brown in colour, measuring : mantle to head 0-4 

 inch, mantle 0-8, mantle to extremity of foot 0-5, or total length 

 when moving 1'5 inches. 



Jaw curved, no central projection, llhachidian teeth narrow 

 and long, tricuspid ; inner laterals bicuspid, the cusps low down 

 on outer side; outer laterals evenly bicuspid. Doth cusps terminal. 

 In each row 186 . 2 . 6 . 1 . 6 . 2 ."186 (194 . 1 . 194), being 6 or 

 more than in G. liooleri. 



