OPEAS, JAPAN. 173 



70. 0. BREVISPIRA Pilsbry. PI. 21, fig. 7. 



Shell perforate, oblong, very short for the genus, corneous, 

 translucent, glossy, weakly, wrinkle-striate, the strije arcuate. 

 Spire short, regularly tapering to the obtuse apex. Whorls 

 5^, moderately convex. Aperture long, rhombic-ovate, the 

 outer lip arched forward in the middle, columellar lip re- 

 flexed, net adnate except at the insertion, columella straight. 

 Length 6, diam. 3, length of aperture 2.6 mm. 



Opeas brevispira PILS., Proc. A. N. S. Phila. 1904, p. 637. 



Japan: Kashima, Harima (Mr. Y. Hirase) ; Sakura Island, 

 in Kagoshima Bay. 



Similar to 0. kyotoensis in the obtuse apex, open perfora- 

 tion, bright gloss and striation, but differing in being very 

 much shorter and broader. The short contour is quite un- 

 usual in this genus. It needs comparison with 0. turgidulum 

 and 0. utriculus Heude, of China, one of which may prove to 

 be identical with brevispira. Opeas opella is also allied. 



71. 0. PYRGULA Schm. & Bttg. PI. 21, figs. 8, 9, 10. 



Shell moderately rimate, slender, subulate, thin, glossy, 

 hyaline ; spire regularly elongate-turrite, apex rather obtuse. 

 Whorls 7y 2 , very slowly increasing, very slightly convex, 

 separated by a deep, subcrenulate suture, irregularly striate, 

 the stria 1 deeply curved, stronger below the suture; the last 

 whorl flattened, rounded peripherally, one-fourth the alt. of 

 the shell. Aperture subvertical, the base a little receding, 

 elongate-rhomboidal, or oblong and angular at both ends. 

 Peristome simple, acute, the margin above rather straightly 

 descending, slightly rounded forward, below a little curved. 

 Length 8, diam. 2%, alt. apert. 2%, width 1% mm. 

 (S. & Bttg.} 



Japan: Kobe (Maltzan, type loc.) ; Hirado, Hizen; Kas- 

 hima, Harima; Kyoto; Sado I.; Tsukiyashi, Mino (Y. Hirase). 

 Chichijima, Bonin Is. (Hirase), South Cape, Formosa. 

 China: Macao, Yanghu near Fuchow, Hunan and Hainan 

 (Schmacker). 



Opeas pyrgula (A. Ad.) SCHMACKER & BOETTGER, 



