OPEAS, CHINA. 169 



rhombic, the columellar margin straight. Length 9, diam. 

 4.5 mm. 



Stenogyra u., HEUDE, Mem. p. 117, pi. 30, f. 19. 



China: Tchen-k'eou. 



61. 0. FARGESIANUM (Heude). PL 19, fig. 11. 



Shell small, elongate-conic, subpellucid, spire conic, whorls 

 7, a little swollen, regularly increasing. Aperture straight, 

 columellar margin short, straight. Length 10, width 2 mm. 

 (Hde.). 



China: Tchen-k'eou. 



Stenogyra f., HDE., Mem. p. 117, pi. 30, f. 20. 



62. 0. PAUVELIANUM (Heude). PI. 19, fig. 12. 



Shell small, turriculate-conic ; spire acute; whorls 7, flat- 

 tened, joined by a subimpressed suture, regularly increasing; 

 aperture straight, small; columellar margin very short, di- 

 lated. Length 9, diam. 2 mm. (Hde.). 



China: Han-k'eou (A. Fauvel) ; Yong-tcheou fu (Fuchs). 



Stenogyra f., HDE., Mem. p. 117, pi. 30, f. 21. 



63. 0. SETCHUANENSE (Heude). PI. 19, fig. 17. 



Shell thin, fragile, 'covered with a worn cuticle, long-conic; 

 spire acute, whorls 8, regularly increasing, inflated, joined by 

 an impressed suture. Aperture straight, narrow; columellar 

 margin straight, dilated, subreflexed. Length 14, diam. 5 

 mm. (Hde.}. 



China: Koue-tcheou fu, quite abundant. 



Stenogyra s., HDE., Mem. p. 118, pi. 30, f. 17. 



64. 0. HUNANENSE (Gredler). PI. 19, fig. 14. 



Shell turrited-cylindric, subperforate, obtusely and not 

 regularly striate, glossy, pellucid, whitish-corneous. Whorls 

 91/2 to 10, a little convex, joined by an impressed suture, 

 gradually increasing, the last moderate in size. Aperture 

 tetragonal-ovate, columella rather straight, twisted, narrowly 

 arcuate at the base, not subtruncate, the columellar margin 

 reflexed, free, not adnate. Length 15 to 16, diam. 3.5 mm.; 

 penult, whorl 2, last whorl 3 mm. high. (Gredl.). 



