Fossils from the üpi^er Musashino of Kazusa and Shimosa. 27 



considered by Dall as identical with Volvula acuta d'Orbigny (not 

 Volvula acuta Tokunaga, a species which I unite wdth V. acum'mata 

 Brug.). But the presence of the raised margin on the inner side 

 of the apertural end and the larger size of the shell distinguish the 

 Japanese fossil from the above mentioned living shell from Ameri- 

 ca. Volvula oxytata Bush (Man. Conch., pi. XXVI, fig. 63), also 

 a living American shell and allied to our fossil, is somewhat more 

 slender. 



Fossil occurrence. — Shito (frequent). 



Family Scaphandridse. 



Genus CYL.ICII1VA, L;jven. 



11. Cylichna tnnsashiettsis, Tokunaga. 



PI. I. Fig. 10. 



Cylichna inumshiensis. Tokunaga, Foss. Euv. Tokyo, p. S'l, pi. II, tig. 12. Yokoya- 



ma, Foss. Miura i'eniii., p. 27, pi. I. tig. 4. 

 Bulla ci/lindracea. Branns, Geol. Env. Tokio, p. 35. 



Although the shell-form' is generally cylindrical, with the 

 greatest diameter in its middle portion, there are rarely specimens 

 which somewhat taper above. The height varies between 2.2 and 

 2.5 times the diameter. The transverse striations wliich Tokunaga 

 omitted to mention are sometimes veiy distinct, especially on the 

 lower portion of the shell. The largest example measures 16 mil- 

 lim. in height. 



Fossil occurrence. — Otake, Shisui and Shito. ()ji and Tabata 

 in Musashi. Lower Musashino of Koshiba. 



Living. — Central Japan. 



Family Philinidae. 



Genus PHItllVE. Ascanius. 

 la. Philine sealnta^ A. Adams, 

 ri. I. Fig. 11, 12. 



Fhiline sculpta. A. Adams, Ann. Mag. Nat. Hist., 1862, vol. IX, p. 160. Lischke, .Jap. 

 Meeresconch., Ill, p. 76, pi. V, figs. 15, 16, 



