610 MAJOR GODWIN-AUSTEN ON [Nov, 17, 



very descending near mouth. Aperture diagonal, broadly lunular, 

 outer margin well rounded, peristome very thick, white, reflected. 

 A thick ridge on the parietal side, separated by slight indentations, 

 connects the inner margins ; and from the middle of this runs back a 

 long horizontal lamella, terminating close to, but not connected with 

 the single vertical lamina ; this is thick and bifurcate below, tapering 

 above and curving backwards ; a short free lamella is situated imme- 

 diately under it. Palatal plicse 6, horizontal, the first and upper 

 small, the remainder about equal in size. 



Major diam. - 48 inch, minor diam. 0'42, alt. axis 0'23. 



Hab. Prowi, head of the Lauier river, Ntiga hills, 5000 feet. 



Young shells have only a portion of the long lamella developed 

 just in front of the vertical one. A dwarfed variety of this species 

 occurred at Sikhami, on the lowest part of the main watershed of the 

 Burrail, measuring only, major diam. 0'30 inch, minor diam. 027. 

 alt. axis - 12. 



In the Nagji Hills, besides these new forms, I also obtained P. ma- 

 cromphalus at the head of the Ihang ; but it was not at all abundant. 



Helix (Plectopylis) munipurensis, nov. sp. (Plate LXXIII. 

 fig. 6.) 



Shell dextral, openly umbilicated, tumidly discoid, thick, pale ochry 

 brown, with distant spots of colour on the upper surface. Umbili- 

 cus open and deep. Spire very depressedly conoid, suture shallow. 

 Whorls 7, flat, the last narrowly constricted just behind the aperture 

 and descending very slightly. At the upper and outer margin of 

 the aperture is a slight compression giving a waved outline to the lip. 

 Aperture very oblique, semicircular, peristome slightly reflected, 

 white, a low, narrow, curvilinear ridge joining the margins. The 

 parietal vertical lamina is situated one third of the circumference 

 from the mouth, having au attached anterior short horizontal process 

 equal to its length ; short supports on the posterior extremity and 

 curving slightly forwards on the lower. Palatal teeth 7, the first and 

 upper minute, the second, third, fourth, and fifth horizontal, the se- 

 cond being the longest, sixth minute, seventh rather lengthened, 

 horizontal, backed by a single isolated small tooth. 



Major diam. 0*44 inch, minor diam. - 40, alt. axis 021. 



Hab. At the end of the Ihang valley, Munipiir, at about 3000- 

 4000 feet, apparently rare ; only seven specimens were obtained. It is 

 a dextral form of the very common Plectostoma, but is more depressed 

 in form, more widely umbilicated, and does not possess the hairy 

 epidermis of that species. 



Helix (Plectopylis) pseudophis, W. Blf. MS. (Plate 

 LXXIV. fig. 3.) 



Shell sinistral, widely umbilicated, discoid, rather thin, pale ochre. 

 Spire quite flat or very flatly convex, suture shallow. Whorls 7, the 

 last well rounded below, less so above, constricted behind the aper- 

 ture and descending sharply. Aperture very oblique, oblately circu- 

 cular* peristome reflected all round, margins connected by a curved 



