136 LAND AND FRESHWATER 



Having referred to two species not before described, I must do so 

 now, althoiigb they belong to a group I propose to include in another 

 part of this work. 



Genus Macrochlamys. 

 {Continued from Vol. I. p. 216.) 



Shells of moderate size (as lecythis) ; conoid or depressedly 

 conoid, Avith glassy surface, in some cases microscopic longitudinal 

 striation visible. 



Macrochlamys udus, n. sp. 



Locality. Hengdan Peak, Burrail Range, Assam. 



Shell very narrowly umbilicated, almost closed in some specimens, 

 very depressedly conoid ; sculpture very smooth, glassy, with longi- 

 tudinal, regular, fine, microscopical striae ; colour pale olivaceous 

 umber-brown ; spire flatly conoid, apex convex ; suture shallow ; 

 whorls 6, compressed, closely woiind, sides convex, rounded at 

 periphery ; aperture lunate, directed downwards, subvertical ; 

 peristome thickened, particularly at the umbilical margin, which is 

 oblique and straight and much sinuate. 



Size : maj. diam. 8"8, min. diam. 8-0 ; alt. axis 4-0 mm. 

 9-2, „ 8-3; „ 4-2 „ 



In a large series there is some slight variation in the height of 

 the spire. 



I have two specimens from the south face of the Garo Hills. It 

 was abundant on Toruputu Peak, Dafla Hills. The finest specimens 

 are from the Burroi Gorge, base of the same hills : 10*2 x 9 x 4-3 mm. 



Examples from these localities are nearly imperforate ; in other 

 respects there is no difference to be found. 



From Munipur I have a dwarf form with a higher spire, pro- 

 ducing a more conoid rounded apex. A similar small but discoid 

 form was very common at Kohima, in the Anghami Naga Hills, 

 6'5 mm. in major diameter. Only two from the Khasi Hills are in 

 the collection, and these are small. 



Soaking a few specimens resulted in obtaining two spermatophores 

 in excellent preservation. One is figured on Plate XCIV. fig. 1. 

 It has a long chitinous flume or gutter tapering towards the 

 membranous capsule, which is rounded at the posterior end. The 

 anterior end of the flume is set on both sides with a series of 

 regularly distributed, thick, short, pointed processes, curving back- 

 wards, and more of these occur down one side than the other. At 

 the basal end these processes are bifid on a short stem. 



Macrochlamys? terminus, n. sp. 



Locality. Brahmakund, Eastern Assam {M. T. Ogle). 



Shell perforate, glassy, smooth, depressedly conoid, flat on base ; 

 sculpture, no longitudinal striation ; colour dark hornj', greyish 

 tint ; spire rather low, side convex ; suture adpressed, shallow ; 



