14 PROCEEDINGS OF THK MALACOLOGIOAL SOCIETY. 



depression; columella rather obliquely descending; labrum narrowly 

 expanded, not reflexed, a verj- light, scarcely perceptible callus 

 uniting the margins; aperture inversely auriform. Alt. 16-25 ram., 

 diam. raaj. 3"75mm. Aperture: alt. 3, diam. 2mm. 



Hah. — ^lountains of S.E. Kan-su, at an altitude of from 2,000 

 to 5,000 feet. 



Closely allied to B. SzecJmiyi, Hilber, also from Kan-su, but with ' 

 a broader and more ovate aperture, more convex whorls, and deeper \ 

 suture. 



BdLI MINDS (NaP^,XJs) CoOKKI, U.Sp. 



Shell sinistral, rimate, fusiform, smooth but for growth-lines, 

 scarcely shining, pale yellowish brown ; whorls 7^, rather flat, the 

 earlier whorls small, the last two rapidly increasing ; sutures some- 

 what lightly impressed ; umbilicus appearing as an extremely narrow 



fissure ; labrum white, expanded, the margins converging and united 

 by such a thick callus as to be practically continuous; aperture 

 rectangularly ovate. Alt. 18 mm.; diam. maj. 7, miu. 6 mm. 

 Aperture: alt. 4, diam. 3mm. 



Hab. — Mountains of S.E. Kan-su, at an altitude of from 2,000 

 to 5,000 feet. 



Clausilia Cookei, n.sp. 



Shell large, moderately solid, cylindrical, with very obtuse apex, 

 pale brownish straw-colour, somewhat shining; whorls 10, flat, the 

 two last very broad, marked with tine, very closely set, oblique, 

 transverse striae ; suture impressed, slightly crenellate ; labrum wliite, 

 continuous, broadly expanded and reflexed below, exserted and 

 narrowly reflexed above; aperture broadly, inversely auriform, armed 

 with a high, erect, white lamella on the pnrietal wall suddenly 

 decreasing in height, and curving round in the interior of the shell to 

 form a junction with tlie columella plait, which is moderately broad 



