MACROCHLAMYg, 113 



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

 right tonsjiu'-shaped. Jaw without median projection. Outer 

 teeth in radula numerous and bicuspid, nearly twice as numerous 

 as in M. tndica, 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 '> long and bicuspid, having a lateral cusp on the outer 

 side only. 



172. Macrochlamys dorani. Godwin-Austm, Mol. Lid. i, ISH.'i p. 87, 



pi.ir, tig. s. 



Shell obtectly perforate, globosely subturbinate, thin, regularly 

 minutely subdistantly longitudinally striated beneath the micro- 

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

 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. 'A-2o, height 2 mm. 



Hah. Maotherichan Peak, j\^. Khasi Hills (Godwin- Austen). 



This is near 31. 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 coluraellar margin above the 

 perforation may indicate that this is a Micronjstina. 



173. Macrochlamys originaria, Go(Iu-m-Aii.s/<'n. Mol. Lid. i, 1883, 



p. !)1. 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|, convex, the last 

 slightly snbangulate at the periphery, tumid beneath ; aperture 

 subvertical, ovately lunate; peristome thin, columellar margin 

 oblique, broadly reflected above. 



Major diam. 2, height about 1-5 mm. 



JJab. Shenghor and Toruputu Peakj?, Dafla Hills, north of 

 Assam ( Godivin- Auaten). 



174. Macrochlamys umbraticola, Gudivin-Austm, Moi. ind. i, Ish:;. 



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



Shell obtectly perforate, globosely subtui-binate, pale olivaceous 

 bi'owu, very mi}nitely regularly spirally (longitudiiuilly) striated 

 beneath the microscope above; and below ; spire conv.exh' conoid, 

 apex obtuse, suture impressed ; whorls 4.4, convex, the last nor 

 descending, rounded at the periphery and beneath ; aperture 

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

 columellar margiji nearly vertical, carried forward and slightly 

 reflected, almost or quite covering the perforation. 



I 



