MACROCHLAMYS. Ill 



166. Macrochlaxnys shisha, Godivm-Austen(Helix-'Na.miia,),J.A.S.. 



1875, 2, p. 2, pi. 1, fig. 3; Pfr. (Helix) Mon. Hel. viii, 1877, 

 p. 559. 



Shell obtectly perforate, lenticular, sharply keeled, very thin 

 and fragile, almost membranaceous beneath, translucent, trans- 

 versely and rather obliquely plicate above, smooth beneath, without 

 longitudinal sculpture ; spire low conoidal, suture but little im- 

 pressed ; whorls 5, slightly convex above, the last considerably 

 broader ; sharply and compressedly keeled ; convex beneath ; 

 aperture slightly oblique, angulately lunate ; peristome thin. 



Major diam. 14|, min. 12 J, height 7 mm. 



Hob. North Khasi Hills, Moyong, Dikrang, 2000' ; Naga Hills, 

 Nenglo, iu damp forest (Godwin- Austen). 



All the specimens are imperfect beneath, but the types are 

 probably adult or nearly so. Animal not observed. 



d. Shells not exceeding about 6 mm. (# quarter inch) in diameter. 

 (Generic affinities often doubtful.) 



a. Subglobose or subturbinaie. 

 a'. Smooth. 



167. Macrochlamys nengloensis, Godwin-Austen, Mol Ind. \, 1883, 



p. 86, pi. 17, figs. 3, 5. 



Shell subobtectly perforate, depressedly turbinate, smooth, 

 without sculpture, faintly polished brownish yellow with an 

 olivaceous tinge ; spire conoidal, apex blunt, suture impressed ; 

 whorls 5J, convex, rather closely wound, the last subangulate at 

 the periphery, tumid beneath ; aperture oblique, lunate ; peristome 

 thin, columellar margin broadly reflected, oblique, almost vertical 

 above. 



Major diam. 5, min. 4'5, height 3-5 mm. 



Hab. Nenglo, Naga Hills, and Manipur (Godwin- Austen). 



This appears to be a variety of M. longicauda. 



168. Macrochlamys koliaensis, Godwin-Austen, Mol. Ind. i. 1883. 



p. 86, pi. 17, fig. 6 (shell), nee p. 119. 



Shell imperforate, depressedly turbinate, thin, smooth, not 

 highly polished above, more so below, without sculpture, light 

 yellowish brown ; spire conoidal, suture impressed ; whorls 6, 

 convex, closely wound, the last scarcely larger, rounded at 

 periphery, moderately swollen beneath ; aperture subvertical, 

 lunate ; peristome thin, columellar margin oblique, reflected. 



Major diam. 4-5, min. 4, height 2-5 mm. 



Hab. Koliaghur, Nowgong district, Assam, on low hills near 

 the Brahmaputra Biver (Godwin- Austen). 



This species is rather more closely wound than M. nengloensis, 

 and the last whorl is rounded, not subangulate. 



