Fossils from the Miura Peninsula and its [inmediale North. 3L 



This is the she]] described by Brauns and Tokunaga as 

 Ringicula arctata Gould from which it differs in having a more 

 rounded base. The closest ally of this species is probably 

 Ringicula doliaris Gould which lives in Central Japan. But this 

 latter species is said to have the outer lip thin. Ringicula caron 

 Hinds (Tryon, Man. Conch., vol. XV, pi. 17, fig. OS) is also 

 related to the present species; but the outer lip is corrugated in 

 the former. 



Fossil occurrence: — Miyata Zone (Shimo-Miyata and Nagai); 

 Yokosuka Zone (Yokosuka); Naganuma'Zone (Naganuma), fre- 

 quent; Upper Musashino of Musashi, Shimosa and Kazusa. 



Living: — Central Japan (Sagami Bay). 



Order Prosobranchiata. 

 Family Terebridae. 



Genus Terebra^ Adanson. 



9. Terebra lischkeana, Dunker. 



Fl. I. Fig. 10. 



Tere'ra lischkeana. Dünker, Index Moll. Maris Japon., p. 71, pi. V, figs. 13-16. 



A single specimen. The shell is subulate, consisting of many 

 flatly convex whorls ornamented with somewhat curved roof- 

 shaped longitudinal riblets which turn their concave side towards 

 the front and their upper end somewhat toward behind. The 

 number of these riblets is about eighteen on the last whorl on the 

 base of which they are obsolete. The interspaces are broadly V- 

 shaped and ornamented with line impressed transverse lines. On 

 all the whorls there is a transverse groove at about one-third the 

 height of the whorl from the upper suture. Canal short and 

 recurved. 



( >ur specimen lacks the apex and shows only twelve whorls, 

 while perfect ones are said to have seventeen to eighteen. The 

 diameter is 7 millim. ; the height, if perfect, would be about 30 

 millim. 



