9ß Art. 1. — M. Yokoyama : 



135. Otïosfoniia {OfJosfomia) shhttosensis, Yokoyama. 



PI. IV. Fig. 28. 



Shell small, eloDgate-conic. Post-nuclear whorls six, slightl}^ 

 convex, somewhat shouldered at the summit so that the sutures 

 appear subchannelled, smooth. Body- whorl about as high as spire. 

 Periphery subangulate. Aperture longly ovate, acute behind, 

 produced and sharply rounded in front. Columella-fold strong, 

 oblique. Height 5 millim. Diameter 2 millim. Rare. 



This shell resembles Odostomia Umpida Dall and Bartsch (Notes 

 on Jap.. Indopac. a. Amer. Pyamidellidae, p. 346, pi. XXVI, Fig. 

 7) living in our seas; but the fossil is somewhat more slender. 



Fossil occurrence. — Otake, Kioroshi. 



Living. — Central Japan. 



136. OfJosfontift {Odostoiniii) litnpida, Dall et Bartsch. 



PI. XIV. Fig. 1. 



Odostomia {Odostomia) Umpida. Dall and Bartsch, Notes ou Jap., Iiulopac. a. Amer. 

 Pyram , p. 364, pl. XXV, fig. 7. 



A small elongate-conic shell with the nuclear whorls to a 

 greater part obliquely immersed in the first post-nuclear one. Post- 

 nuclear whorls about five, only slightly convex, smooth. Body- 

 whorl a trifle longer than one-half the shell-height. Periphery 

 feebly angulate. Aperture subovate, with posterior angle acute and 

 anterior end somewhat produced and rounded. Columella with a 

 distinct lamellar fold. Height 3 miUim. Diameter 1.5 millim. 



Fossil occurrence. — Shito, Otake. 



Living. — Western Japan. 



137. Odosfotnia (Otlostmnia) desiniatut, Dall et Bartsch. 



PI. V. Fig. 7. 



Odostomia (Odostomia) desimami. Dall aid Bartsch, Jap., ludopac. a. Amer. Pyram., 



Proc. U. S. Nat. Mus., XXX, p. 362, pl. XXV, fig. 3, pl. XXVI, fig. 2. 

 Odostomia lactea. Dnnker, Moll. Jap., p. 17, pl. II, fig. 4. Pilshry, Catalogne, p. 84. 



Shell small, elongate-conic. Nuclear whorls almost completely 

 immersed in the first post-nuclear one. Post-nuclear whorls about 



