496 PROCEEDINGS OF THE ACADEMY OF [June, 



A NEW JAPANESE PLEUROTOMARIA. 



BY HEXRY A. PILSBRY. 



The Academy has received from Mr. Y. Hirase a specimen of Pleuro- 

 tomaria from Kashiwajima, province of Tosa, Japan. The shell repre- 

 sents a new species, which may be thus defined: 



Pleurotomaria hirasei n. sp. PI. XXII, figs. 1, 2. 



Shell resembling P. heyrichi in shape and general characters. The 

 upper surface is copiously streaked with crimson on a white ground, 

 orange-tinted in places; the base being white with a few faint wide, 

 flexuous reddish streaks. Sculpture above of spiral, regularly beaded 

 cords; 7 above, 5 below the slit fasciole on the whorls of the spire, the 

 beads closely placed, corresponding to close and rather strong plicae, 

 or ripples, which are oblique above, vertical below the slit fasciole; the 

 latter being sculptured with the usual arcuate striae, and traversed by 

 a wide median cord, with, a thread below it. On the last whorl the 

 beaded cords become more numerous, about 10 above the fasciole. 

 The base is nearly flat, and has many spiral cords and threads, made 

 crenulate by fine radial, flexuous folds. The slit is about one-fifth of a 

 whorl long. The columella is twisted in a strong, convex lobe. The 

 apical whorls are wanting in the type, and the lip is somewhat broken. 



Alt. 72, diam. 81 mm. 



The height would be 4 or 5 mm. greater in a perfect shell, the apical 

 whorls of this one being broken off. 



P. heyrichi as figured by von Martens, Dautzenberg, Schmalz and 

 others, has much more \\ddely spaced spiral cords, which are wealdy 

 beaded, in place of the closely beaded and more crowded cords of this 

 species. 



