Fossils from the Upper Mvisashino of Kazusa ami Shnnosa. <^0 



Moll., I, Univalves, p. 92, pi. VIII, fig. 16) of the Coralline Crag 

 of England in which, however, the ribs are less in number (gener- 

 ally twelve). 



Fossil occurrence. — Shito. 



133. Scaleiria pieturafa, Yokoyama. 

 PI. IV. Fig. 20. 



Shell turriculate. Whorls about twelve, the first two smootJi, 

 the succeeding convex, longitudinally finely costellate and spirally 

 striate. Costellae very fine, filiform, much narrower than inter- 

 spaces, about sixty on the body-whorl. Spiral striae equally fine, 

 found only on the lower three-fifths of the whorls, about eight in 

 number on the penultimate, quite as distant as tlie riblets them- 

 selves and crossing them, so that the surface appears cancellated. 

 Periphery angulate. Aperture suborbicular. Base somewhat 

 convex, with longitudinal striae only. 



Two specimens. The larger seems to be worn. It shows the 

 riblets obtuse and the spiral striae nearly obsolete. Its height is 

 20 millim. with the diameter 5.5 millim. The figured specimen is 

 the smaller one which is 13 millim. in lieiglit and 5 millim. in 

 diameter. 



This species has some resemblance to Scalaria scabe7'rima 

 Micht. (Bellardi et Sacco, ]\Ioll. Piem., IX, p. 57. pi. II, figs. 45- 

 47) of tlie Italian Pliocene, although different in details. 



What Tokunaga figured as iScalaria acuminata Sow. (Poss. 

 Env. Tokyo, pi. I, fig. 37) seems to be this species. Sowerby's 

 species, however, is more slender and has no s|)iral striae. 



Fossil occurrence. — Shito. Oji in Musashi. 



Living. — Central Japan. 



Family Eulimidae. 



Genus KIXI.'»1A, Eisso. 



13S. IJufhita {Tjciostraea) uuieinefu, Yokoyama. 



PI. IV. Fig. 21. 



Shell small, subulate, polished. Whorls about ten, somewhat 

 ■convex, separated by indistinct sutures, with an interstitial impress- 



