Plate III. 



(All the specimens here figured are in Sei. Coll. Mus.) 

 Turrilites aff. Bergerl Bhgt. Pp. 4-7. 



Fig. 1. Side view of the type. From lower Annuonite-l)eds of the Popets, 

 Il)uri Prov. Nat. size. 



Helicoceras scdhire m. Pp. 9-10. 



Fig. 2. Upper view of the type. From ScapJiites-hedn of the (Jpiraushibets, 



Teshio Prov. Nat. size. 

 Figs. .3 a, b, c. Upper and lower views and cross-section of another specimen. 



From Scaphi'tes-heds of the Opiraushibets. Nat. size. 



Helicoceras venustum m. Pp. 11-12. 



Fig. 4. Side view (slightly oblique) of a large specimen. From Scapliites- 

 beds of the Opiraushibets. Nat. size. 



Heteroceros Oshimai m. Pp. 12-14. 



Fig. .5. Side view of the type. From upper Amuionite-beds of the Iku- 



shumbets, Ishikari Prov. Nat. size. 

 Fig. 6. Side view of a smaller si)ecimen. From upper Ammonite-beds of 



the Shikuruki, Ishikari Prov. Nat. size. 



Heteroceros orientale m. Pp. 19-20. 



Fig. 7. Side view of the type. From the upper Ammonite-beds of Ura- 

 kawa, Hidaka Prov. Nat. size. In this drawing, the larger end 

 of the shell is shown below and the smaller end above. 



Hetcroceras japonicurii m. Pp. 17-18. 



Fig. 8. Side view of the type. From up})er Ammonite-beds of the Yii- 

 barigawa, Ishikari Prov. Nat. size. 



Heteroceras Otsiikai var. multicostata m. Pp. 16-17. 



Fig. 9. Side view of the type. From ScapJiites-heds of the Opiraushibets. 

 Nat. size. On this figure, the larger end of the shell is shown 

 below and the smaller end above. 



