i)0 ZONlTID.i:. 



above, smooth and polished beneath, without longitudinal (spiral) 

 sculpture ; spire conoidal, apex blunt, suture impressed ; whorl 6, 

 convex, rather closely wound, the last rounded at the peripherj% 

 convex beneath ; aperture oblique, rather roundly lunate, broader 

 than high ; peristome thin, columellar margin oblique, rather 

 broadly reflected at the perforation. 



Major diam. 10, min. 9, height 6 mm. 



Hcdi. Darjiling. 



Distinguished by its shape, rather narrow whorls, and rugose 

 striation. 



[132. Macrochlamys ? perfragilis. (iodirln-Austen [Xedll, MS.), 

 Mol. Ind. ii, 1907, p. ItJl, pi. 109, tig. 5. 

 Nauina (Microcystis), n. sp. o (Sikliim; coll. Dr. F. Stoliczka), 

 JS'eviirs Hand-list, no. 107, p. 39. 



Shell globose, scarcely perforate, thin membranaceous character; 

 sculpture very minute, tine regular longitudinal striae ; colour 

 sapphire-green ; spire low, apex rounded and blunt ; suture very 

 shallow; whorls M, rounded on side, tiat above; aperture broadly 

 lunate, vertical ; peristome very thin, columellar margin scarcely 

 thickened, subvertical. 



Size : maj. diam. 7'0, min. 6-0, alt. axis 3-8 mm. 



Locality. Sikhim. 



This shell was sent as 167 a, as the type of perfragilis. There 

 should be four specimens left in the Calcutta Museum.] 



e. With a free ccecuni to male organ. 



[133. Macrochlamys richilaensis, Godwin-Austen, Mol. Ind. ii, 

 ]907, p. lo4, pi. lUo, iigs. 1-] _y. 



Shell subdepressedly globose, very narrowly perforate, glassy 

 surface, very transparent; sculpture none, transversely crossed 

 by regular shallow close furrows ; colour greenish ochre ; spire 

 depressed ; suture shallow ; whorls 4, rather rapidly increasing, 

 shoA^ing at intervals 3 varices of progressional growth ; aperture 

 subvertical, widely lunate ; columellar margin subvertical, not 

 thickened and scarcely reflected. The apertui-e was covered with 

 a thick membranaceous epiphragm. 



Localitij. liichila Pass, Bhutan frontier (10,370 ft.). 



Size : maj. diam. 18'75, min. 14-75, alt. axis 8'5 mm. 



The animal is dark green near the extremity of the foot. The 

 margin as m ell as the sole of the foot is pale ochre in the spirit, 

 probably ruddy ochre in life, quite a contrast to the upper part. 

 Sole of foot divided. As regards the general form, mucous gland, 

 and neck-lobes it is very like M. dalingensis. The apical whorls 

 of the visceral sac are blade, s])arsely speckled m ith ochre : where 

 the membrane covering the lieax't and kidney commences this 

 colouring is reversed ; the ground is pale, openly speckled over 

 A\ith ovate black markings and dots, with an undefined baud of 



