Plate XV. 



Figs. 1, 2. Pecten tissoti Bern. J . ßigbt valve. 2. Left valve. Sliitö. P. 182. 



Fig. 3. Pecten snbplicatus Sow. Plight valve. Kioroslii. P. 181. 



Fig. 4. Area (Anomalocardia) granosa L. Left valve. Shisui. P. 18G. 



Fig. 5. Ostrea mnsashiana Yok. Lower valve. Shitö, P. 185. 



Figs. 0, 7. Pecten excavatns Ant. 6. Flat valve. 7. Convex valve. Shitö. P. 183. 



Fig. 8. Pinna japonica Hani. Fragment of a beak-portion. Shitö. P. 185. 



Fig. 9. Area (Anomalocardia) inflata Pive. Left valve. Ötake. P. 187. 



Figs. 10, 11. Creuella divaricata Yok. 10. Left valve, a shows depth. 11. Right 



valve. Shitö. P. 175. 

 Fig, 12. Area (Scapharca) snbcrenata Lke. Left valve. Ötake. P. 187. 



