4 H. H. Godwin- Austen — Descriptions of [No. 1, 



This species is an extremely elongate, solid form of the crassilahris 

 section of Olessula — and one of the most distinct. 



Glessula Butleri, n. sp., Plate I, Fig. 7. 



Shell elongately turreted, very thin and "brittle, tumid, pale corneous, 

 glassy, very minutely striated, apex very blunt ; whorls 8, rather rounded, 

 suture deep, hody whorl much swollen and capacious ; aperture vertical, 

 pear-shaped, lip rather thin. 



Alt. 1-13, major diam. 0'45 in. 



Sab. — Eastern Burrail Range at 6000 feet — not a common form. 



I name this shell after Captain J. Butler, Political Agent in the Xaga 

 Hills, with whom I had the pleasure of being associated when mapping 

 that very interesting and beautiful district. 



EXPLANATION OF PLATE L 



Fig. 1. Helix delibrata, var. fasciata. 



„ 2. S. (Nanina) atricolor. 



„ 3. „ „ Shisha. 



„ 4. Glessula orthoceras. 



,, 5. „ illustris. 



» 6. „ 



)> 7. ,, 



II. — Descriptions of four New Species of Mollusca belonging to the family 

 Zonitidai from the N. E. Frontier of Bengal, with drawings of Heli- 

 carion gigas, Benson and of a variety of the same. — By Major H. H. 

 Godwin-Austen, F. B. O. 8., F. Z. 8., Sfc, Deputy Superintendent 

 of the Topographical Survey of India. 



(Received Sept. 1874,— Eead January 6th, 1875.) 



(With Plates II— III.) 



Helicaeion Shixlongense, n. sp. 



Animal ochre colour, the mantle being slightly paler than the rest of 

 the body, there is no longitudinal streaking on the side of the foot, which, 

 viewed under a lens, is covered with minute protuberances evenly distributed • 

 foot beneath dull ochre brown. 



Shell horny, thin, long and narrow, pale green in colour. (Plate II, 

 Fig. la). 



Length 0'9", diam. 0-28." 



The dimensions of these creatures are not so easily taken, the different 

 parts expanding and contracting alternately. 



