12 ZONlTlDJi. 



b 4 . Longitudinally striated. 



188. Macrochlamys nebulosa, Blf. (Nanina) J.A.S. B. 1865, p. 66 ; 



Pfr. (Helix) Mon. Hel. v, 1868, p. 79 ; H. $ T. (Helix) C. /. 

 1876, pi. 04, tigs. 8, 9, 10; Nevill, Nanina (Macrochlamys), 

 Kand-L i, 1878, p. 23. 



Shell perforate, conoidly depressed, sublenticular, thin, pale 

 horny, not polished, but with a dull greasy lustre above, more 

 polished below, smooth, minutely spirally striated (the striae only 

 visible under a microscope) above, not below; spire low, conoid, 

 suture impressed ; whorls 6, convex, slowly and regularly increasing, 

 the hist a little wider, subangulate at the peripherv, angulate in 

 young shells, convex beneath ; aperture slightly oblique, roundly 

 lunate, breadth exceeding height ; peristome thin, columellar 

 margin slightly expanded, almost vertical and briefly reflected above. 



Major diam. 12, min. 11, height 6 mm. 



Hob. Northern Pegu ; Akoutoung, S. of Prome, Thayetmyo. 



Chiefly distinguished by its dull greasy lustre above and sub- 

 angulate or angulate periphery. 



189. Macrochlamys notha, Blf. P. Z. S. 1904, ii, p. 444, pi. 25, fig. 19. 

 Nanina petasus, Blf. (nee Betison) J. A. S. B. 1865, 2, p. 86. 



Shell perforate, depressed, not highly polished, smooth to the 

 eye or faintly striated, but under the microscope ornamented 

 above and below with fine close concentric (longitudinal) parallel 

 raised lines, which, under a higher power, are found to be rows of 

 minute moniliform tubercles, yellowish tawny ; spire low, conoidal, 

 apex subacute, suture impressed ; whorls 6-7, slightly convex, 

 slowly increasing, the last rounded at the periphery, convex 

 beneath ; aperture very slightly oblique, almost vertical, lunate ; 

 peristome thin, basal margin arcuate, columellar slightly expanded, 

 very briefly vertical above, then obliquely curved. 



Major diam. 11|, min. 10|, height 6 mm. 



Hob. Tongoop Pass, Arakau Hills, and neighbourhood of Thayet- 

 myo, Pegu. 



This shell resembles the Tenasseriin M. petasus (p. 115) closely 

 in shape and colour, and I long regarded the two as identical : but 

 M. notha is distinguished by wanting the labiation of the 

 Tenasserim species, by being less polished, and by its sculpture, 

 which can only be seen under a microscope. 



190. Macrochlamys hypoleuca, Blf. (Nanina) J. A. S. B. 1865, 2, 



p. 67 ; Pfr. (Helix) Mon. Hel. v, 18(18, p. 104 ; H. $ T. (Helix) 

 C. I. 1876, pi. 64, figs. 6, 7 ; Nevill (Macrochlamys), Hand-l. i, 

 1878, p. 26. 



Shell openly perforate (narrowly umbilicated), depressed, thin, 

 smooth, polished, with very fine microscopic spiral (longitudinal) 

 striation (which is often obsolete) above and below; chestnut 

 above, whiti&h beneath ; spire Very low, conoidal, suture impressed 5 



