1S75.] Species of Helix and Glessula. 3 



Sab. — Abundant on the nummulitic limestone of the West Khasi 

 Hills, particularly near Nongumlai, where the finest specimens were 

 collected ; a smaller variety occurred on the peak of Laudomodo on gneiss, 

 and was not so solid. This species can be at once distinguished from 

 G. Gasiaea, Bs. by its white colour and by the absence of the dark brown 

 epidermis that covers the latter ; the whorls also are much more rounded* 

 whereas in Gasiaea they are nearly flat. It is very close to G. obtusa, W. 

 Blf., brought from Yunan by Dr. J. Anderson, but is altogether a larger 

 shell and differs in its general form. 



Fine Glessula Gasiaea, I only found to the eastward in the Naga Hills, 

 whence, I suspect, Griffith's specimens were obtained and sent to Benson, 

 who imagined they were from the Khasi Hills. 



Glessula illtjsteis, n. sp., Plate I, Fig. 5. 



Figured in ' Conchologia Inclica', PL 102, Fig. 9. 



Shell elongately oval, greenish horny, finely striated longitudinally ; 

 whorls 7, very slightly rounded, suture moderately impressed, the lip 

 thickened, columellar margin slightly curved and strong, apex blunt. 



Length 0*75, major diam. 3, length of aperture 0*3 in. 



Sab. — Hengdan Peak, North Cachar Hills, at 7000 feet, in forest, 

 also near Nenglo at 6000 feet and in the Lukah Valley, Jaintia Hills, at 

 1000 feet. 



This species is an elongate and larger form of Glessula cras- 

 silabris, Bs., of which G. pyramis is a closer variety ; but its much more 

 elongate form and stronger striation make it a good connecting species with 

 G. Butleri described further on. The form from the Lukah Valley is a 

 tumid departure from the type figured. 



One specimen— alt. 0*75, major diam. 0"38 in. 



Another „ „ 0"65 „ 0'35 



5> 



I look on all these species as properly varieties, and G. crassilabris, 

 very abundant in all the grass country of the Khasi Hills, may be taken 

 as the type ; a difference in elevation and condition of habitat, from damp 

 dark forest to hot grassy slopes, having produced modifications of form. 



Glessula Bueeailestsis, n. sp., Plate I, Fig. 6. 



Shell turreted, elongate, solid, in fresh state brown and lustrous, finely 

 longitudinally striated ; whorls 10, rather flat, suture shallow, apex blunt ; 

 aperture sub-vertical, fusiform, angular above, peristome very thick, paler 

 brown on margin, columella strong. 



Alt. 1*37, major diam. 0'4 in. 



Sab. — The finest specimens were collected under the Peak of Khun- 

 ho, Eastern Burrail Range j they were also abundant under Japvo at about 

 7000 feet. 



