OPEAS, CHINA. 167 



obtuse ; whorls 6, regularly increasing, a little convex, joined 

 by a deep suture, the last half the total length. Aperture 

 squarish-rounded, the lateral margins subparallel, subequal, 

 lower margin slightly arcuate, umbilicus narrow. Length 

 7.5, diam. 2.5 mm. (Hde.). 



China : on the city wall of Ning-kuo f u, very rare. 



Stenogyra lucidula HDE., Mem., p. 58, pi. 17, f. 23. 



Described from one specimen. 



55. 0. LAPILLINUM (Heude). PL 20, fig. 43. 



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

 whorls 6, a little flattened, joined by a deep suture, regularly 

 increasing, the last half the total length. Aperture widely 

 oval, lateral margins unequal, the columellar margin short, 

 narrow, sub arcuate, the outer margin straightened, long, 

 basal margin widely arcuate, umbilicus narrow. Length 8, 

 diam. 2.5 mm. (Hde.). 



China: hills of Song-kiang, rare. 



Stenogyra lapillina HDE., Mem. p. 58, pi. 17, f. 22. 



"It is less swollen than the preceding, and the angle of 

 the columellar with the upper margin is decidedly more 

 rounded. ' ' 



56. 0. SPOLIATUM (Heude). PI. 20, fig. 44. 



Shell turriculate-conic, whitish, subpellucid, striatulate ; 

 spire obtuse ; whorls 6, convex, joined by a subscalar suture, 

 the last whorl as long as the rest of the spire. Aperture 

 quadrate-oval, the columellar margin narrow, straight, and 

 forms nearly a right angle with the basal margin ; basal mar- 

 gin oblique, slightly arcuate; outer margin nearly straight; 

 umbilicus narrow. Length 7.5, diam. 2.5 mm. (Hde.). 



China: Shanghai, not common. 



Stenogyra spoliata HDE., Mem. p. 58, pi. 17, f. 21. 



"It approaches S. lucidula ; the last whorl is larger, the 

 mouth wider, and the columellar margin narrower and long. ' ' 



57. 0. INFLATULUM (Heude) . PL 20, fig. 45. 



Shell conic-ovoid, rather solid, white, striatulate; spire 



