16 ART. 2. — S. TOKUNAGA. 



38. PLEUROTOMA SAGAMIEMSIS Tok. 

 PL I. Figs. 29 a and b. 



Shell more oval tliaii in the two preceding species and 

 turrated in form ; oblique longitudinal costœ about twelve or 

 more in number easily traceable from the upper suture line to 

 the priphery in one whorl, but the lower half of each whorl 

 usually devoid of the longitudinal plications ; transverse Urse 

 very distinct both on the costas and in the interspaces ; aperture 

 oval, short, a little longer than one third the whole shell height. 

 Height SO"""^ ; breadth 9*^"^. 



Shinagawa (very rare). 



Living : Moroiso and Enoshima (Sagami). 



S9. PLEUROTOMA (3LINGELIA) PARVA Tok. 

 Brauns, Geol. Env. Tokio, p. 33. 



Shell elongated, turriculated, acuminated ; whorls seven, 

 convex, with no any prominent angle near the suture ; longi- 

 tudinal ribs about nine or ten, somewhat oblique, crossed by 

 transverse stirse ; canal lengthened ; aperture narrow. Height 

 and breadth 9"^'" and 3.5""°, or V'"'" and 2.5°"°. 



Brauns determined the specimens as identical with P. {Man- 

 gelid) striolata Phil, of Europe and Madeira, but the latter 

 species is distinctly though narrowly shouldered, and has fine, 

 almost microscopic spiral lines, while in our specimens these 

 lines are coarser and distinctly visible to the naked eye. Be- 

 sides the figures of the European species given in AVood's Crag 

 Mollusca show many other differences. 



Oji (abundant). 



