112 ZOXITIVJE. 



169. Macrochlamys roberti, Godwin-Austen, Mol Ind. i, 1883, p. 87, 



pi. 17, fig. 17. 



Shell minutely perforate, depressedly turbinate, thin, smooth, 

 scarcely polished above, more so below, minutely striated trans- 

 versely, without spiral (longitudinal) sculpture, brownish horny ; 

 spire conoidal, apex obtuse, suture impressed ; whorls (>, convex, 

 rather closely wound, the last rounded at the periphery, tumid 

 below ; aperture subvertical, lunate ; margins converging ; peri- 

 storne thin, columellar margin oblique, curved, almost vertical 

 above, rather broadly triangularly reflected. 



Major diam. 4, min. 3'75, height 2-5 mm. 



Hab. Angauluo Peak, 6777' ; Burrail Bange, Naga Hills 

 ( Godivin- Austen}. 



This is distinguished from M. koliaensis by its lower spire and 

 by being perforate. 



170. Macrochlamys tanirensis, Godwin-Austen, Mol. Ind, i, 1883, 



p. 87, pi. 17, fig. 9. 



Shell obtectly perforate, subglobosely depressed, thin, polished, 

 smooth, light yellowish brown ; spire low, convexly conoid, apex 

 obtuse, suture impressed ; whorls 4|, convex, increasing slowly, 

 the last rounded at the periphery, swollen below ; aperture nearly 

 vertical, lunate ; peristome thin, columellar margin oblique, rather 

 broadly reflected. 



Diam. 2-8, height 1'75 mm. 



Hab. Tanir Peak, Dafla Hills, 4400' (Godwin-Austen). 



b'. Longitudinally striated. 



171. Macrochlamys longicauda, Godwin-Austen, Mol. Ind. i, 1883, 



pp. 84, 85, pi. 17, figs, 1, 2, 2, 4 (shells), pi. 20, figs, la-e 

 (animal and radula), pi. 21, fig. 16 (sculpture). 



Shell subobtectly perforate, depressedly turbinate, pale horny 

 brown to yellowish tawny, not polished above, and under the 

 microscope marked with two series of very fine oblique striae at 

 right angles to each other (these appear to be wanting in some 

 varieties), smooth and polished below; spire low, conical, apex 

 obtuse, suture impressed ; whorls 5J, regularly increasing, convex 

 above, the last angulate at the periphery, tumid beneath ; aperture 

 slightly oblique, angulately lunate ; peristome thin, columellar 

 margin much curved, expanded throughout, vertical and sharply 

 reflected at perforation. 



Major diam. 6, min. 5-6, height 4 mm. ; smaller specimens 

 measure 4 to 5 mm. in diameter. 



Hab. Khasi, Jaintia, and North Cachar Hills; Cherra Punji, 

 Maotherichan Peak, Jawai, Marangsip Peak, &c. 



Caudal extremity of foot abruptly truncated, lobe above large, 

 mucous pore greatly developed. Colour pale, with a dark grey line 



