80 Art. 6. -M. Yokoyama ,: 



This shell resembles Eullma soUdula Sow. (Voy. Sarnarang,- 

 p. 52, pi. XI. fig. 26) of China Sea, but the aperture is more 

 produced in front. A single specimen. 



Fossil occurrence. — Yokosuka Zone (Yokosuka). 



83. Eulima (Leiostraca) sagamiana, Yokoyama. 

 Pl. V. Fig. 8. 



Shell very small, subulate; Whorls perfectly flat, smooth, 

 glossy; body-whorl large with periphery rounded and base strongly 

 convex. Sutures not very distinct. Aperture ovate/ acute 

 behind and rounded in front. Outer lip thin. 



The single specimen which we possess lacks the apical portion 

 of the spire. But the number of whorls may have been about 

 seven or eight, with height measuring about 3,5 millim. The 

 diameter as well as the length of the aperture is about 1 millim. 



Watson in his Challenger Report described several species of 

 Eullma of which E. acanthyttis and E. famellca seem to be nearest 

 to this fossil form. But the former (Challenger Gastropoda, pl. 

 XXXV, fig. S) has the inner lip more reflected over the columella 

 and the latter (1. c. pl.XXXVT, fig. 4) has the outer lip protruding 

 out of the straight line drawn from the apex downward on the 

 spire. 



Fossil occurrence. — Naganuma Zone (Naganuma). 



Family Pyramidellidae. 



Genus PyratnideUa^ Lamarck. 



84. Pyramidella (Tiberia) psendo-pulchella, Yokoyama. 



Pl. Y. Eig. 11. 



Shell small, elongate-conic, with a spiral zone of brown close 

 to the lower suture, while on the body-whorl there is another 

 band of the same colour on the anterior portion of the base. 

 Whorls about ten, separated by deep impressed sutures, very 

 flatly convex, polished. Periphery somewhat angulated. Base 

 short, rounded. Aperture ovate, angular behind. Outer lip thin. 

 Columella bipicate, the posterior fold much larger than the 



