f'EPITALOrODA FROM TTTE TTOKKAIDi». 49 



marked only l)y fool)le farrows on tlic cast ; al)Out six of tlicm 

 wore counted in tlic smaller specimens. These strire or lines and 

 furrows are of exactly the same nature as those of the ahove 

 three sjiecies, hut project more strongly forward. The suture line 

 shows four saddles on the external side, a saddle and one or two 

 denticles following them on the umbilical wall, and two saddles 

 on the internal side. 



In the suture line and the general aspect of the shell, the 

 only species which approaches this is T. epigonus Kossmat. The 

 suture lines of both species can hardly be distinguished from each 

 other. However, the Japanese form is rather widely umbilicated 

 and its Avhorls are lower. 



Localities : — The Makka-ushipe, a ti-ibutary of the Saniishibe, 

 Prov. Ihuri ; the Fenke-opushikep, a tributary of the Teshiogawa, 

 Prov. Tesliio. One specimen from each locality. From the Shi- 

 sanushibe, also a tributary of the Sanushibe, we have three 

 specimens, one of which is figured. 



Horizon : — Pachycl iscus-heds ; the horizon at the last men- 

 tioned locality has not yet been ascertained. 



TETRAGONITES cfr. EPIGONÜS Koss^fat. 



PI. VIL, fig. 3. 



Compare : — 



189-5. Lijioceras epigonumKoBSM at : 1. c. p. 39 (135), PI. HI. 



{XVIL), figs. 4, a, b, c, and 5, a, b. 

 1865. Amiiionit(^i^ Tim.otheanu^ p.p. i^TOLiczrcA : I.e. p. LIH, 



PI. LXXIIL, %. 5. 



