166 OPEAS, CHINA. 



51. 0. FILARE (Heude). PI. 20, figs. 38, 39. 



Shell subpellucid, striatulate, slightly tawny- whitish ; spire 

 filar and scalar, whorls 7, a little flattened, and separated by 

 an impressed suture; the last whorl half the total length. 

 Aperture rounded at base, narrow, the columellar margin 

 straight, short; outer margin strongly oblique, the umbilicus 

 very narrow. Length 7, diam. 2 mm. (Hde.). 



China: Limestone rocks of the mountains of Ning-kuo fu; 

 two specimens (Hde.). 



Stenogyra filaris HDE., Mem. p. 56, pi. 17, f. 27. 



Belated to 0. gracilior and 0. pyrgula. 



52.. 0. FUNICULARE (Heude). PL 20, fig. 40. 



Shell turriculate-filar, glossy whitish, striatulate. Spire 

 long, acute. Whorls 7, rather flattened, separated by a wide 

 and quite deep suture, regularly increasing, very oblique, the 

 last less in length than the rest of the shell. Aperture regu- 

 larly oval, rather acute above ; columellar margin very short, 

 a little dilated and reflexed over the narrow umbilicus. 

 Length 9, diam. 2.5 mm. (Hde.). 



China: Shanghai and at Song-kiang fu, quite abundant 

 (Hde.). 



Stenogyra funicularis HDE., Mem. p. 56, pi. 17, f . 28. 



53. 0. NANKINGENSE (Heude). PI. 20, fig. 41. 



Shell turriculate-conic, white, pellucid, striatulate; spire 

 long, rather obtuse ; whorls 7, regularly increasing, joined by 

 a scalar suture, the last as long as the others taken together. 

 Aperture rounded-rectangular, the lateral margins subpar- 

 allel, a little unequal, columellar margin rather wide, dilated 

 over the umbilicus. Length 8.5, diam. 2.5 mm. Animal 

 yellowish- white (Hde.). 



China: hills below Nanking, very rare. 



Stenogyra nankingensis HDE., Mem. p. 57, pi. 17, f. 24. 



54. 0. LUCIDULUM (Heude). PI. 20, fig. 42. 



Shell turriculate-conic, pellucid corneous, striatulate; spire 



