MACEOCHLAMYS. 103 



]40, Macrochlamys Ihotaensis, Godivin-Austen, Mol. Ind. \, 1883, 

 p. 107, pi. 23, fig. 5 (shell) ; id. t. c. ii, 1897, p. 49, 

 Macrochlamys inarshalli, Tryon, Man. (Jonch. pt. 2, 1886, p. 101. 



Shell very much like that of J/, decnssata, but having a broader 

 last whorl and different sculpture. The longitudinal (concentric) 

 striation on the whorls above and below is much stronger than 

 the transverse and looks almost costulate under a microscope. 

 Subuinbilicate, depressed, thin, dark brownish horny; spire low, 

 suture scarcely impressed; whorls 7, flatly convex, the last 

 rounded at the periphery, flattened below ; aperture broadly 

 lunate, subovate, columellar margin oblique, scarcely reflected. 



Major diam. 23, min. 20, height 104 mm. 



Hab. Lhota Xaga Hills {God win- Austen). 



I have only seen one specimen of this shell, the type, which is 

 immature. 



150. Macrochlamys rubellocincta, Bif. (Nanina) J. ^. ^. 5. 1870,2, 



p. 14, pi. ■■;, tio-. 9 ; H. .y T. (Helix) C. I. 1876, pi. 51, figs. 5, 6; 

 Pfr. Mon. mi. vii, 1876, p. 121. 



Shell perforate, depressed, thin, smooth, somewhat polished 

 above, more so beneath, finely decussated above with microscopical 

 transverse slightly flexuous strite and fine longitudinal impressed 

 lines, the latter wanting below; inner half of each whorl whitish 

 horny, outer half rufous, the latter colour forming a broad belt 

 round the periphery; spire almost flat, suture very shallow; whorls 

 6-G4, slightly convex above, the last subangulate at the periphery, 

 moderately swollen below; aperture slightly ol)lique, broadly 

 lunate ; peristome thin, basal margin subarcuate, columellar 

 inclined, reflected briefly above. 



Major diam. 35, min. 31, height 14 mm. A smaller specimen 

 measures 31 hy 28 by 12 mm. 



Hah. Habiang Garo Hills (Godwin- Austen). [This shell has 

 only been found on the Nummulitic limestone south of the 

 Yindku Peak ; the animal was not seen.] 



This is near decassafa, but is distinguished by being much flatter 

 above and by its very different coloration and sculpture. 



151. Macrochlamys bilineata, Gudwin-Austcn, J. A. S. B. 1876, 2, 



p. 311 pi. 8, fig. 9. 



Shell imperforate, subglobosely depressed, A'ery thin, trans- 

 parent, polished, brownish horny, beneath the microscope very 

 minutely and closeh' longitudinally striated, the striation not 

 easily seen ; spire low, suture impressed ; whorls 5, convex, the 

 last well rounded at the periphery and beneath ; apertuie oblique, 

 roundly luuatr ; peristome thin, slightly arcuate above and at th'-" 

 base, columellar margin curved, vei-tical above, slightly reflected. 



Major diam. 12, min. 10, height 6 nun. 



JIah. Tanir Lau^.pa ridge, 4000' ; Dafla Hills, north of Assam. 

 Abundant in forest amongst fallen leaves (Godwin-Austen). 



