MOLLTTSCA OF IMDIA. 



323 



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. chloropla.v. The aperture is aiute 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. Jcashmirensis : diam. 7|, axis 3|, alt. 4^, 

 apart, lat. 3^, alt. 3 mm. 



" Young specimens of N. cUoroplax (for comparison) : diam, 7|, 

 axis 3i, alt. 4|, apert. lat. 4, alt. 3 mm. 



" Abundant at 8onamnrg. Collected by Ferdinand Stoliczka.'' 

 In this description all its characters are compared with a species 

 found near Murree, which Nevill had determined as H. Morojjlax 

 of Benson, the ty pical locality of which is Simla. Thus further 

 comparison is needed of the two forms. 



Animal. Has a few distant brown specklings on the wall of the 

 branchial sac. liight and left shell-lobes small but distinct, and a 

 well-developed lobe or horn over the mucous gland at the extremity 

 of the foot (tig. 2rt). 



In the genitalia (fig. 2) the penis is of the type found m the 

 subfamily Macrochlamyiufe, with a coiled ctecumforming a rounded 

 mass from which the retractor muscle is given off. This is short, 

 the place of attachment is on the visceral sac. The kale-sac is 

 large and pointedly oblong, not flagellate. The amatorial organ is 

 rather short and tiiickened. 



The jaw (fig. 2 6) has a central projection and is moderately 

 curved. 



The radula formula is 



18 . 1 . 9 . 1 . 9 . 1 . 18 

 complete, or 28 . 1 . 28. 



The centre and admediau teeth on square plates of the usual 

 form ; marginals small, few in number, unevenly bicuspid, very 

 minute on the outer margin. 



The following species may also be placed in this subgenus : — 



Macrochlamts (Microcystis ?) sonamurgensis, G, Nevill. 



G. Nevill, Sci. Results 2nd Yarkand Mission (Mollusca), 1878, 

 p. 16, Plate, figs. 16-18; id.. Hand-list {Nanina so)iamHr(/enyis, 

 Nev.)', p. 33,' no. 117 ; Blanford & Godw.-Aust., Faun. E. India, 

 Moll. 'p. ^63(1908). 



KhasieUa ? sonamurgensis, Nevill. 



Or'ginal description. " 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 



