PROSOPEAS. 35 



Bulimus decorticatus RVE., Conch. Icon., v, pi. 80, f. 592, 

 (Dec., 1849). PFR., Monogr., iii, p. 402. Stenogyra d., 

 MARTS., Ostas. Zool., p. 53. 



"A shell of rather solid growth, longitudinally sculptured 

 throughout with rude, plicate stria?" (Eve.). 



Von Martens considers this to be identical with B. fortunei 

 Pfr., which is described thus : 



B. fortunei Pfr. (pi. 12, fig. 10). Shell slightly subper- 

 forate, turrited, rather solid, longitudinally closely costulate- 

 striate, scarcely shining, subdiaphanous, waxen. Spire reg- 

 ularly turrited, the apex obtuse. Whorls TI/O, a little convex, 

 the last about one-third the total length, rounded at the base. 

 Columella lightly arcuate. Aperture oblique, oval, rounded 

 basally; peristome simple, unexpanded, the right margin 

 spreading, columellar margin narrowly reflexed. Length 11, 

 diam. 4, alt. aperture scarcely 4 mm., width 2 mm. (Pfr.). 



Shanghai, China (Fortune). 



Bulimus fortunei PFR., P. Z. S., 1852, p. 137 ; Monogr., iii, 

 p. 398; Conchyl. Cab., p. 255, pi. 69, f. 6-8. Stenogyra f., 

 MARTENS, Ostas. Zool., p. 53. 



According to von Martens, this species is very closely re- 

 lated to O. panayensis. Gredler (Malak. Bl. n. F., ix, p. 

 142) places decorticata Reeve and scalaris Desh. in the syn- 

 onymy of Opeas subula, which he records from southern 

 Shensi, Peking and middle China, abundant. 



34. P. STRIATISSIMUM (Gredler). 



Shell nearly covered rimate, subulate, deeply and closely 

 striate, the stria? about straight, slightly arched forward; 

 waxen, opaque, lusterless; apex somewhat obtuse. Whorls 7, 

 convex except the last two which are less so ; last whorl one- 

 third the total length, convex below; suture rather deep. 

 Aperture subvertical, narrow, elliptical-piriform. Columella 

 subarcuate, not truncate, nearly forming an angle at its junc- 

 tion with the outer margin ; columellar margin a little dilated, 

 noticeably tapering downwards, slightly reflexed above. 

 Length 9, diam. 3 mm. (Gredl.) . 



China: province Shan-tung; at Tsi-nan-fu (Gredler). 



