198 W. T. Blanford — Gontrihutions to Indian Malacology. [No. 4, 



Var. major, depressa, aiifracfihus 6, ."ipird ronvexd, parum eJevafd : 

 diam. maj. 21^, min. 19^, axis 10 mm., apert. llf lata, 10 oilique alta. 

 Hab. Etiam ad Mari. 



Shell perforate, subtarbinately depressed, faintly striated, polisbed 

 white, translucent, surrounded by a narrow rufous band above the periphe- 

 ry. Spire depressedly conical, apex obtuse, suture slightly impressed, and 

 with a rufous margin inside. Whorls 51, increasing slowly and regularly, 

 the last rounded at the periphery, moderately convex beneath, scarcely 

 descending towards the mouth. Aperture broadly lunate, oblique, diagonal ; 

 peristome thin, not thickened inside, basal margin almost straight, columel- 

 lar reflected. Major diameter 0'76, minor 7, axis 0'37 inch (taken from 

 the figure). A smaller specimen measures : — major diam. 0"54, minor 0"5, 

 axis 0"3, breadth of aperture 0'27, height (obliquely measured) 0'23 inch. 



There is a larger variety, inore depressed, with the spire convex and 

 six whorls. It may possibly be a distinguishable form, but I think not. 

 A specimen measures : — major diameter 0'85, minor 0'78, axis 0'42, breadth 

 of aperture 0-45, height (obliquely measured) 0'4. 



I greatly question whether this form is really a MacroMamys, and 

 cannot help suggesting the possibility of its belonging to a different sub- 

 generic group, or even to Zonites. However, it is associated at Mari with 

 a true Macrochlamys {31. prona*) and two or tliree species of Selicarion ; 

 so it is evident that a few of these tropical types extend to this extreme 

 north-western portion of the Himalayan range, where, however, the majori- 

 ty of the mollusca consist of Bulimini of the Petroeus section. 



The specimen of M. loynnei from which the accompanying figure was 

 taken has been mislaid or lost, and the description is drawn up from a 

 smaller individual. I have named the shell after Mr. A. B. Wynne of the 

 Geological Survey of India, to whom I am indebted for several mollusca 

 from the neighbourhood of Mari. 



I have been in some doubt as to whether this might not be a form of 

 the shell described by Prof. v. Martens as Nanina jacquemonti (Malak. Bl. 

 xvi. 1869, p. 75 ; Pfr. Nov. Conch, iv. p. 48, pi. cxviii, figs. 6-8) ; but, in 

 the first place, it can scarcely, I think, be the species figured by Jacque- 

 mont (Voyage dans I'lnde, Atlas, pi. xvi. fig. 2), and, secondly, iV. jacgue- 

 monti is described as having "peristoma obtiisum, intus incrassatum, mar- 

 gins. ..hasali lev iter arcmto,^' none of which can apply to the present species. 

 Pfeiffer's figure in the ' Novitates' shows a very much less oblique mouth 

 than is found in Macrochlamys ? wynnei. Now, I have another species 

 from Mari, which agrees admirably with Marten's description in these re- 



* Nevill, ' Scientific Results of tlie Second Yarkand Mission,' Mollusca, p. 17. 



