MACROCHLAMYS . 113 



on upper surface to extremity of foot. Shell-lobes present, the 

 right tongue-shaped. Jaw without median projection. Outer 

 teeth in radula numerous and bicuspid, nearly twice as numerous 

 as in M. indica, the formula being 76 to 80 . 3 . 5 . 1 . 5 . 3 . 76 to 

 80 (84 . 1 . 84). Middle tooth tricuspid, long, with convex sides, 

 the next 5 long and bicuspid, having a lateral cusp on the outer 

 side only. 



172. Macrochlamys dorani, Godwin-Austen, Mol. Ind. i, 1883, p. 87, 



pi. 17, fig. 8. 



Shell obtectly perforate, globosely subturbinate, thin, regularly 

 minutely subdistantly longitudinally striated beneath the micro- 

 scope above and below, light yellowish brown ; spire eonoidal, 

 apex obtuse, suture impressed ; whorls 5, convex, the last rather 

 larger, rounded at periphery and below ; aperture subvertical, 

 lunate ; peristome thin, coluraellar margin almost vertical above, 

 triangularly reflected, the edge projecting slightly convexly above 

 the perforation. 



Diam. 3-25, height 2 mm. 



Hob. Maotherichan Peak, N. Khasi Hills (God win- Austen). 



This is near M. umbraticola, but has a higher spire, more closely 

 wound whorls, and a different colour. The microscopic sculpture 

 is less close. 



The slight projection in the columellar margin above the 

 perforation may indicate that this is a Microcystina. 



173. Macrochlamys originaria, Godwin-Austen, Mol. Ind. i, 1883, 



p. 91, pi. 14, fig. 12 (shell). 



Shell perforate, turbinately depressed, smooth, with fine longi- 

 tudinal striation, sienna-brown ; spire conoidal, sides convex, 

 apex obtuse, suture impressed ; whorls 4 j, convex, the last 

 slightly subangulate at the periphery, tumid beneath ; aperture 

 subvertical, ovately lunate ; peristome thin, columellar margin 

 oblique, broadly reflected above. 



Major diani. 2, height about 1*5 mm. 



Hal). Shenghor and Toruputu Peaks, Dafla Hills, north of 

 Assam (Godwin- Austen). 



174. Macrochlamys unibraticola, Godwin- Austen, Mol. Ind. i, 1883, 

 p. 89, pi. 14, figs. 4 (shell), 4 a (sculpture;. 



Shell obtectly perforate, globosely subturbinate, pale olivaceous 

 brown, very minutely regularly spirally (longitudinally) striated 

 beneath the microscope above and below ; spire convexly conoid, 

 apex obtuse, suture impressed ; whorls 4|, convex, the last not 

 descending, rounded at the periphery and beneath ; aperture 

 slightly oblique, roundly lunate ; peristome obtuse, in one plane, 

 columellar margin nearly vertical, carried forward and slightly 

 reflected, almost or quite covering the perforation. 



I 



