104 ZOXITI]).E. 



The animal is described as " pale ochraceous ; tentacles black, 

 the black extending on to the neck as two very conspicuous well- 

 defined parallel linos : the upper part of the foot has also two 

 parallel black lines. From the right anterior margin a long 

 tongue-like process is given off which reaches, when partly 

 extended, up to the apex of the shell." 



152. Macrochlamys llda, Gochmn- Austen, Mill. Lid. ii, 1899, pii. 13.3, 

 136, pi. 94, tig. 1 (spermatophore). 



Shell subperf orate, depressed to conoidly depressed, smooth, 

 polished, very finely and closely striated spirally (longitudinally) 

 throughout under tlie microscope, pale umber-brown ; spire very 

 low, convexly conoid, suture iiupressed ; whorls G, convex, slowly 

 increasing, the last rather broader, descending slightly towards 

 the mouth, rounded at the ])eriphery, convex beneath : aperture 

 oblique, lunate ; peristome slightly obtuse in adults, basal margin 

 arcuate, columellar oblique, nearly straight, slightly expanded 

 throughout, scarcely more so at the junction with the last whorl. 



Major diam. 8|, miu. 7h, height 4| mm. 



Hah. Hills on both sides of Assam Valley. Found by Godwin- 

 Austen at Toruputu Peak, Dafla Hills, and at the southern base 

 of the range ; also in the G;iro, Ivhasi, and Xaga Hills, and in 

 Manipur. 



Shells from different localities vary in size, the largest exceeding 

 10 mm. in diameter, and in the height of the spire. The species 

 may be recognized by its almost or completely closed perforation 

 and arcuate basal mai-gin of the peristome, also by the slight 

 descent of the last whorl in adults. 



Macrochlamys shengorensis, Godwin- Austen, Mol. Ind. i, 1883, p. 102, 

 pi. -22, fig. 5 ; ii, 1907, p. 18o. 



Shell perforate, depressed, brownish tawny, thin, polished, with 

 fi^ne, rather close, microscopic lirate longitudinal striation through- 

 out above and below ; spire almost flat, suture scarcely impressed ; 

 whorls 4| (immature), flat above, the last considerably broader, 

 rounded at periphery, flatly convex beneath ; aperture nearly 

 vertical, broadly lunate; peristome thin, columellar margin curved, 

 oblique, reflected above, partly covering perforation. 



Major diam. 11, min. 10, height 5 mm. 



Hah. Shengor Peak, Dafla Hills {Godwin-Austen). 



Only immature shells are known. These are distinguished by 

 flatness and by the lirate concentric sculpture. 



[This has proved to be the young of Staffordla dajlaensis.'] 



153. Macrochlamys cacharica, Godwin-Austen, Mol Ind. i, 1883, 

 p. 177, pi. 27. fig. 2 (shell and anatomy). 

 [Fig. 4.5 A, p. 10.5.] 



Shell openly perforate, depressed, thin, glassy, smooth, brownish 



