Fossils from the Upper Mnsashino of Kazusa and Shimosa. 31 



19- Ter ehr a gofoensia^ Smith. 

 PI. I. Fig. 18. 



Terebm <iotoensia. Smitb, Proc. Zool. Soc. London, 1879, p. 183, pi. XIX, figs. 1, la. 



Pilsbi-y, Catalogue, p. 12. Danker, Index Moll, p. 73. 

 Terebm alceolata Hinds var. (jotoensis, Tryon, Man. Conch., vol. YII, p. 28, pi. Y, figs. 



85,91. 



Shell subulate. Whorls about seventeen, flat, slightly con- 

 cave on the upper third, longitudinally weakly plicate. Plicae 

 numerous, close together, about twenty-six on the body-whorl, 

 somewhat sinuous, vertical at the upper end, then bending back- 

 ward and then forward, the lower end being directed obliquely 

 forward. Periphery obtusely angulate, with the base abruptly con- 

 tracted, the angle formed at the periphery being about 130°. Base 

 smooth, with coarse lines of growth only. Aperture sul:)rhoml)ic. 

 Canal short and curved. 



Tbere are two specimens, both of which are not quite perfect. 

 The height is about 20 millim. and the diameter 5 millim. 



Tryon' s opinion that Terehra gotoensis is only a variety of 

 Terehra alveolata Hinds, a species living in tlie Strait of Malacca, 1 

 am at present n nable to conlirm. Wliat Tokunaga calls Terehra 

 alveolata Hinds (Foss. Env. Tokyo, pi. I, flg. 17) seems to be a 

 quite different shell. 



Fossil occurrence. — Otake. 



Living. — Western Japan. 



30- Terehrn hetlleyi, Pilsbiy. 



PI. I. Fio-.. 19. 



Terehra hedleiji. Pilsbry, New Jap. Mar. Moll., Gastropoda (Proc. Acad. Nat. Soi. 

 Philad., Jan., 1904) p. 3, pi. I, figs. 1, la. 



The shell is subulate with about flfteen flat whorls of which 

 one and a half are embryonal and smooth ; the remaining whorls 

 are ornamented with flat spiral cords whose flrst or uppermobt is 

 the broadest, occupying about one-third of a whorl and is tubercu- 

 late, the tubercles being distinct on the upper whorls and indistinct 

 •or obsolete on the lower. The second coi'd is somewhat narrower 



