

16 



SECOND YARKAND MISSION. 



of monticola. According to the " Conchologia Indica," the type form of H. scutella is from the 

 Khasi Hills, and the variety from Kashmir ; after a careful consideration of the original 

 description, I think Mr. Hanley is correct in this view. Instead of 3^, H. monticola 

 has 4i whorls, which increase more regularly than in H. scutella ; the colour is of a 

 greenish-hrown, instead of bright green ; the apex less acute ; the aperture much higher in 

 proportion to its breadth ; the columella not oblique at all, almost straight and rounded at the 

 base. This species is found abundantly everywhere throughout the North- West Himalayas 

 in company with the preceding. 



Specimen from Murree : diam. 16|, axis 5, alt. 8^; apert. alt. 10|, alt. 10-| mm. 



Pfeiffer's original measurements of H. monticola are: diam. maj. 18, alt. 7^ mm. 

 This is evidently an even more depressed form than the one here recorded from Murree, and 

 does not at all agree with the preceding species, which possesses moderately exserted whorls 

 and has been figured by both Reeve and Hanley for H. monticola ; the latter author's figure 

 measures : diam. 20|, alt. 13 mm. Pfeiffer's description, too, suits this shell, and not the 

 preceding, when he says, " Depressa, fyc., spira plana ; atifract. 4, celeriter accrescentes 

 planiusculi, ultimus depressus, non descendens, &c." 



5. NANINA (ROTULA) CHLOROPLAX, Bens. 



Helix Moroplax, Benson, Ann. & Mag. Nat. Hist., 1865, ser. 3, vol. xv, p. 14 (near Simla). 



Found abundantly near Murree, agreeing exactly with the original description and the 

 figure in " Conchologia Indica," pi. xxxii, figs. 1 and 4. 



A few of the specimens found were larger than the type, which was only 8 mm. in 

 diameter. Diam. max. 11, axis 5, alt. 6; apert. lat. 6, alt. 4 mm. 



6. NANINA (ROTULA) KASHMIRENSIS, n. sp., Figs. 13 15. 



Shell small, closely resembling the preceding, from which it can, however, be easily 

 distinguished by its smaller size, less depressed shape, much more closely wound whorls, 

 higher spire and less acute keel ; by the more convex base, which does not possess the ex- 

 cavated depression round the umbilicus so characteristic of its ally ; the umbilicus itself also is 

 smaller ; the sculpture is apparently the same, above subplicately striate, below the same but 

 less developed than above. I think both should rather be described as most minutely 

 punctuate, rather than " tenuissime decussata " as in the original description of N. chloroplax. 

 The aperture is quite different, being much less dilated in the present species, with scarcely 

 any trace of the acute angulation in the middle of the outer margin, and with the columella 

 less oblique and more rounded at the base. Full-grown type of N. kashmirensis, diam 7|, 

 axis 3f , alt. 4| ; apert. lat. 3^, alt. 3 mm. Young specimen of N. chloroplax (for compari- 

 son) : diam 7i, axis 3|, alt. 4 ; apert. lat. 4, alt. 3 mm. 



Abundant at Sonamarg. 



7. NANINA (MICROCYSTIS ?) SONAMTJRGENSIS, n. sp., Figs. 1618. 



Shell small, depressed, thin, horny -brown, with the suture distinct ; roughly, regularly and 

 closely ribbed above ; sculpture of a similar kind, but almost obsolete, can be traced on the 



