196 PUPILLA, ASIA. 



gin arcuate, columellar perpendicular, basal rounded; pari- 

 etal wall with a short denticle at the insertion of the outer 

 margin and a deeper, stronger median fold; columella one- 

 folded; two palatal folds, the lower longer and stronger. 

 Length 3%, diam. 1% mm. ; aperture scarcely over 1 mm. 

 long and wide (Martens). 



Turkestan: in the Sarafshan valley near Maracandam, 

 Piandjikent and Magian (Fedtschenko). 



19. PUPILLA DIECKI (Gredler). 



Shell narrowly umbilieate, as though rimate, cylindric, ob- 

 tusely conic at the apex, densely and regularly striatulate, 

 corneous, silky. Whorls 7-T 1 /^, but little increasing, convex. 

 Aperture rounded, small, with two palatal folds and one 

 strong, immersed parietal, the parietal callus obstructed with 

 a punctiform fold at the outer insertion. Columella armed 

 with a tooth-like callus. Peristome broadly expanded and 

 flattened, slightly lipped, continuous, adnate parietally, the 

 margin acute, fragile, the neck ornamented with a rather ob- 

 tuse crest, behind and parallel to the margin. Length S 1 /^ 

 diam. l ] /3 mm. 



Eastern Turkestan: Kulab (Dr. GeorgDieck). 



Pupa diecki GREDLER, Nachrbl. D. M. Ges., xxi, 1889, p. 162. 



This appears to stand in the group of P. signata, which 

 Gredler does not mention in his comparisons ; it is a smaller 

 shell than that, yet requires comparison. 



20. PUPILLA INTERRUPTA (Reinhardt). PL 21, figs. 5 to 8. 

 Shell dextral, conic-cylindric, rimate-perforate, rather 



glossy, slightly striate, pale corneous. Whorls 6%, slowly in- 

 creasing, convex; the last ascending in front, somewhat com 

 pressed at the base, provided with a sulcus parallel with the 

 suture; at the aperture transversely crested, then constricted. 

 Aperture vertical, rounded, the peristome reflected, broadly 

 white-lipped, margins converging, joined by a thin callus ; 

 right margin subangular above, thin at the insertion and alsc 

 provided with a slightly prominent tooth and thickened ; basal 

 margin rounded ; columellar straight and subperpendicular ; 

 one lamelliform parietal fold interrupted in the middle (pi. 



21. fig. 5a), another strong, deeply placed columellar, and 



