1893.] NATURAL SCIENCES OF PHILADELPHIA. 269 



seen. V. tenera is, at all events, distributed over eastern China as 

 ■well as in Japan. 



9. V. patens Reinhard. 



Hel. patois Reinhard, Sitzungsber. Nat. Fr. Berlin, 1883, p. 43. 

 Hel. patois O. v. Mcellendorff, Jabrb. D. Mai. Ges., 1884, p. 315. 

 Hel. pulchella Muller and n. sp. O. v. Mcellendorff, ibid. 1881, p. 36. 



" Shell small, flat, with scarcely projecting apex, with wide, per- 

 spective umbilicus, grayish white. Whorls 3$, somjewhat depressed, 

 moderately increasing in width, separated by a deeply impressed 

 suture, and with distant membranous ribs ; the last scarcely descend- 

 ing toward the aperture. Aperture very oblique, transversely oval, 

 with everted but scarcely thickened peristome; upper margin 

 almost straight, lower margin symmetrically curved, insertions at 

 the margins approximate. Diam. 2, alt. scarcely 1 mm. 



" The species recalls H. costata as to the ribs, but differs from it in 

 its smaller size, wider umbilicus, and more oblique aperture with 

 slightly thickened peristome. It has been found by Dr. O. v. Mcel- 

 lendorff on the Powentschan, Prov. Chi Li, China, in company with 

 H. tenuilabris A. Br., a species which seems to be widely distributed 

 in northeastern Asia, Avhile in our regions (Central Europe) it is 

 only found fossil in the pleistocene loess. This fact is interesting in 

 connection with the results of Nehring's investigations concerning 

 the vertebrate fauna of the loess." (Original descr., translated ; no 

 figure). 



Dr. O. v. Mcellendorff (I. c, 1884) thinks V. patens may be iden- 

 tical with V. pulchellula Hde. (see tenera Reiuh.). I have seen no 

 specimens. 



10. V. gracilicosta Reinhard. 



V. gracilicosta Reinh., 28 Sitzungsber. Nat. Freunde, Berlin, 1883, p. 42. 



Shell flat, with little prominent apex, widely umbilicated, of 

 whitish-gray color. Whorls 3*, convex, separated by a deep 

 suture, with fine but distinct, rather crowded ribs; last whorl 

 slightly angular around the umbilicus, strongly expanding toward 

 the aperture, slightly descending to the same. Aperture moderately 

 oblique, transversely oval, with strongly everted and broadly white- 

 lipped peristome ; upper margin little, lower margin more curved, 

 almost obtusely angular. Margins at the insertions approximate 

 and connected by a callus. Diam. 2 - 5, min. 2'0, alt. about 1 mm. 



28 O. Reinhard, iiber die von den Herren Gebr. Krause auf ihrer Reise gesam- 

 inelten Pupa-, Hyalina- und Yallonia-Arten. 



