32 ART. 2. — S. TOKUXAGA. 



84. RTNClICriA ARITATA Gld. 



PL II. Fig. 11. 



Brauks, Geol. Env. Tokio, p. 30. — Lischke, Jap. Meeres- Con eh., IL, 

 p. 78.— Gould, Otia Conch., p. 122.— Pilsbuy, Cat. Mar. MolL 

 Japan, p. 10. 



()ji, Shinagawa and Tabula (very abundant). 

 Living : Tokyo, Nagasaki and Hong-kong. 



CYLICHNID/E. 

 ' _85. (!YLU;HNA MrSASHlENSIS ToK. ,. \ 



PL II. Fig. 12. ; 



Brauns, GeoL Env. ïôkio, p. 85. — Wood, Crag MolL, I., 175. 



Shell cylindrical, convolute, entirely smooth ; vertex de- 

 pressed, concave, witli a hidden spire ; aperture linear, dilated 

 at the base, with an obtuse fold upon the columella. Height 

 and breadth 17'"'" and 7™'"; or lO™"^ and 7.5'"'" ; or 7""" and 3""". 



Brauns identified this species with Bulla cylindracea Pennant. 

 of the Crag and the British Seas, but it is easily distinguished from 

 it by having a more elongated shell, no transverse striatious on the 

 surface, and by the narrower dilatation at the base of the aperture. 



Shinagawa, Oji and Tabata (rare). 



86. CYLICHXA A(?1:TA Tok. / 



PI. II. Fig. ir>. 



Shell small, thin, subfusiform, convolute ; spire hidden, outer 

 lip elevated and so elongated at the upper part as to give it the 

 appearance of having an acuminated apex, rounded at the lower 

 part ; surface smooth ; aperture linear, expanded below with an 

 obsolate fold upon the columella. Height 5""" and breadth 2""". 



()ji (frequent). 



