FOSSILS FKOM THIO ENVIRONS OF TOKYO. 27 



69. KISSOA Mh:iUI)IONALTS Tok. 



PI. l. Fig. 56. 



Shell turreted ; whorls nine, angulated, each ornamented 

 with two or three large transverse elevated ridges, decussated by 

 longitudinal ribs ; body-whorl angulated at the periphery, the 

 lower part of whicli is only spirally striated; aperture subcircular; 

 outer lip not thickened, and without denticulation. Height 4°"" 

 and breadth 1.8""™. 



Shinagawa (rare). 



TO. RISS(U SLB( YLTNBRICA Tok. 

 ri. I. Fig. 57. 



Shell small, elongate, subcylindrical, with obtuse apex ; 

 whorls five, convex, finely transversely striated ; suture deep ; 

 aperture ovate, rather narrow at the upper part ; inner lip 

 thickened. Height 32°"" and breadth 1.7"". 



Tabata (rare). 



Order Scutibranchiata. 



ROTELLIDit. 



71. ROÏELLA COSTATA Lesson, var. 8UPERBUS Old. 



PI. I. Fig. 58. 



Brauns, Geol. Env. Tokio, p. 52.— Pilsbry, Cat. Mar. Moll. Japan, 

 p. 100.— LiscHKE, Jap. Meeres-Couch., II., p. 83.— Gould, Otia 

 Conch,, p. 156. 



The color of the shell is very variable. It is preserved in 

 my specimen in numerous bands of a brownish tint somew^hat 



