MOLLUSCA OF INDIA. 61 



I have not hitherto seen auy elongate Glessula {Uishetia') of the 

 bitcidiiia t5'pe from so low au elevation as Gowhathi (only about 

 iiuU feet) and so far from the base of the eastern Himalaya, all have 

 come from quite high habitats of 3-501)0 feet. This is not surprising 

 when we cousider that from Gowhathi westward up to the Garo 

 Hills, an area of 135 miles by 32, or over 4100 sq. miles, no land- 

 rnoUusca have been collected, until the high ground in the Khasi 

 Hills is reached, where O. sahhacvlina is abundant. Eastward it 

 is the same up to the Mikir Hills, a tract mostly of hill-country, 

 G-i miles long by 32 broad or some 2000 sq. miles. North of the 

 Erahinaputra, for the distance of 190 miles, another 6000 sq. 

 niilfs, no collecting has been made. I trust Sunder Lall will 

 before long be given the opportunity of collecting all along the line 

 of the Assam railway and visit places contiguous to it, particularly 

 tlie isolated low granite hills nortli of the Brahmaputra River. 



Glessula bukrailensis, G.-A., var. maxwelli, G.-A. 



Locality. Somra Tracts, Somra Khulen Post, Upper Burma, 

 8.-1.19. About L. 25° 20' N., L. 90° 45' E. No. 3742 B.M. 



Shell elongate cylindro-conoid, turreted, solid, rather shining ; 

 sculpture : on the protocouch ribbing, approaching fine costulation, 

 merges into finer, more irregular, and curvilinear un the succeeding 

 wliorls ; just below tlie sutui'e this sculpture is stronger, giving the 

 appearance of crenulation ; colour a rich ochre, some are chestnut; 

 spire long, gradually increasing, sides with slight convexit}', apex 

 blunt; suture moderately impressed; whorls 10|, flatly convex, 

 tlie last the largest ; aperture oval, rather narrow for size, milky 

 white within ; peristome outer margin well thickened, white ; 

 columella strong, concave, truncate. 



Size; maj. diam. lO'O ; alt. axis 32'75 mm. 



The longest and ) „ „. „., . 



most attenuate } " " ^ ^5 ; „ „ 33-5 mm. 



This very interesting shell was collected by Captain L. R. Maw- 

 son, 1st Lushai Hills Battalion, Assam Eifles, and is a more 

 attenuate form of 0. hiirrailensis from the Naga Hills, this easterly 

 locality extending the range to the hill-slopes of the Kyengdwen 

 Valley. 



