Fossils from the Upper Mnsashino of Kazusa and Shimosa. 33 



portion of the whorls ; the lowest one is close to the suture. These 

 striae are often very indistinct on the upper whorls. Periphery 

 rounded. Base rather abruptly narrowed below, usually with 

 two spiral striae on its surface. Aperture subrhombic. Canal 

 short, bent a little backward. Height 24 millim. Diameter 5. 5 

 millirn. Length of aperture 5.5 millim. 



Fossil occurrence. — Shito (numerous) and Otake. 



23. Terehra sinifhi Yokoyama. 

 PI. I. Fig-. 21. 



Shell subulate. Whorls about seventeen, flattish, longitudinally 

 costulate and spirally striate. Costulae about twenty on the penul- 

 timate w^hork more or less roof-shaped, interrupted by a shallow 

 spiral groove running a little above the middle of the whorls, the 

 part above the groove being somewhat in advance of the part below 

 the same. The groove is more or less indistinct on the upper 

 whorls. The interspaces between the costulae are furnished with 

 very fine spiral striations, some of which on the lower whorls may 

 grow into coarser ones. These coarser ones in crossing the costulae 

 make them tubercular. On the penultimate whorl there are two 

 sQcli coarser threads above the groove and three l;)elow it, while on 

 the body-whorl there are four between the groove and the 

 periphery, and about as many on the base. Periphery rounded. 

 Aperture subrhombic. Outer lip thin and sharp. Canal very 

 short, somewhat recurved. Height 36 millim. Diameter 8 millim. 



Only a single specimen. This species is still living in our 

 seas, attaining a height of 80 millim. It is brown-coloured wdien 

 fresh. 



I doubt if this is not the shell called Terebra granulosa by 

 Smith in the Annals and Magazines of Natural History of 1873 

 (p. 268), a name afterwards changed by the author himself into 

 Terebra pustulosa (Proc. Zool. Soc. London, 1879, p. 186). Unfor- 

 tunately the shell has never been figured. 



Fossil occurrence. — Otake. 



Living. — Central Japan. 



