MOLLUSCA OF INDrA. 29 



apex very hhinh and rounded, sides flatly convex ; suture mode- 

 rately impressed; whorls 7, sides very flatly convex; aperture 

 oval ; peristome outer tip thickened ; columellar margin slightly 

 convex, nearly straight. 



Size: maj. diam. tl'5 ; length 22 mm. 



The above peak, a trigononjetiical station, is situated on the 

 watershed of the Patkai Kange and is 6900 feet in altitude. It 

 was first visited in the cold season of 1884-85 by Colonel Wood- 

 thorpe, R.E., with his assistant Mr. Ogle, and they were 

 accompanied by Mr. Tom D. La Touche of the Geological Survey, 

 who published an excellent account of Geolog}' of the Upper 

 Dihing Basin, Singpho Hills. 



Glbssitla MAiAMBNsis, n. sp. (PlateCLX.fig.il.) No. 29B.M. 



Localiti/. Divung Valley, Singpho Hills; two specimens {21. 1'. 

 Ogle). 



Shell is more elongate than the tyjie ; colour is greener ; side of 

 spire rather flatter ; aperture rounder, from the outer lip having 

 more convexity. All the kind of diversity the sliells of this genus 

 present, particularly when a large series is obtainable. 



Size : maj. diam. 8'5 ; alt. axis 20'b mm. 



Glessula dihingensis, n. sp. 



Localiti/. Dihing Valley, Assam (type No. 3251 B.M.) ; some ten 

 specimens (J/. T. Oyle). No. 1600 B.M. from Sonari Tea Garden, 

 near Sadiya. (Plate CLXIV. fig. 4, apex.) 



Shell elongate, turreted ; sculpture : very smooth generally, fine, 

 close, rather strong ribbing near and below the suture ; cohmr 

 umber-brown; spire long and fine; suture impressed : whorls 10, 

 the last short ; aperture ovate, small ; columellar margin well 

 curved. 



Size: maj. diam. 5-0; length 180 mm. 



This is not unlike G. mai-era, but the whorls are not so close 

 and the last is longer in jiroportion to those above, i. «., a more 

 tumid basal one. iSpecimcns from Sadiya (No. 3151 B.M., 10 in 

 number, collected by my old assistant Mr. Ogle) differ in colour, 

 being a very pale ash, the largest of 9 whorls measures 

 21 X 5'25 mm. I have also two examples from Sonari Tea 

 Garden, 15-5 mm. in length, sent me by Mr. S. E. Peale, very 

 finely and closely striated. 



4 a. Ahor Bills and Tsanspv, Valley. 



Glessula oakesi, n. sp. PI. CLX. fig. 15. 



ahorensis, n. sp. PI. CLXII. fig. 4. 



