198 PUPILLA, ASIA. 



22. PUPILLA CHINENSIS (Hilber). PI. 22, fig. 14. 



The shell is very small, cylindric, having a very narrow, 

 circular umbilicus, extremely finely striate, formed of 6 

 strongly convex whorls. The color of my specimen is glossy- 

 brownish. The aperture is bluntly angular, continuous in a 

 strong callus, having a white, strongly thickened peristome, 

 reflected nearly to the upper margin. A strong parietal fold 

 and tooth-like projections on the right wall of the aperture 

 are present. The neck bears no trace of a fold. Alt. 3, great- 

 est diam. 1.5 mm. (Hilber). 



China: Lan-tchou-fu, Prov. Kan-su, one example in or on 

 loess (v. Loczy). 



Pupa (Pupilla) chinensis HILBER, SB. Math.-Nat. Cl. K. 

 Akad. Wissensch. Wien, 88 Bd., 1 Abth., 1884, p. 1378, pi. 6, 

 f. 11 ; repeated in "Wissensch. Ergebn. Reise Szechenyi in Os- 

 tasien, ii, 1898, p. 618, pi. 4, f. 18. 



Hilber 's very inadequate figures of this and the following 

 two species are reproduced photographically. 



23. PUPILLA RICHTHOPENI (Hilber). PI. 22, fig. 15. 



The shell is very small, cylindric, with a narrow umbilical 

 crevice, extremely finely striate, consisting of 6 convex whorls; 

 The color of my specimen is glossy yellowish-white. The aper- 

 ture is truncate-oval, with a strong callus and with a strong, 

 internally thickened, reflected margin. It has a very weak 

 parietal fold, the indication of a tooth on the outer wall of 

 the mouth, and a strong columellar tooth rather far within. 

 On the neck there is a very weak callus. Alt. 3, greatest 

 diam. 1.5 mm. (Hilber). 



China: Hoi-njing-shien, Prov. Kan-su, from loess (Loczy). 



Pupa (Pupilla) richthofeni HILBER, SB. Math.-Nat, Cl. K. 

 Akad. Wissensch., Wien, 88 Bd., 1 Abth., 1884, p. 1379, pi. 6, 

 f. 12 ; repeated in Wissensch. Ergebn. Reise Szechenyi in Osta- 

 sien, ii, 1898, p. 618, pi. 4, f. 19. 



This species appears to me to stand near P. triplicata Stu- 

 der. The most conspicuous difference is in the sharp peri- 

 stome of the latter species. In examination the last whorl of 

 the single specimen was broken; in restoring it the umbilical 



