2 Art. 7. — M. Yokoyama : 



The fossils which I obtained appear to have been collected 

 from both shell-layers, since though they consist mostly of 

 Mollusks there are also some Brachiopods. Besides these two 

 groups of shells, there are also some remains of Echinoids, Cirri- 

 pedes, Bryozoans and Tubicolous Annelids. 



The Mollusca and Brachiopoda which I have been able to 

 determine are the following: 



1. Turritella saishuensis n. sp. 



2. Natica sp. 



3. Dentalium weinkauffi Dkr. 



4. Pholas fragilis Sow. 



5. Dosinia sp. 



6. Meretrix (Callista) chinensis Chem. 



7. Saxidomus purpuratus Sow\ 



8. Cardium sp. 



9. Diplodonta semiaspera Phil. 



10. Lucina borealis L. 



11. Venericardia cipangoana Yok. 



12. Venericardia ferruginea Ad. 



13. Venericardia nakamurai n. sp. 



14. Myodora fiuctuosa Gld. 



15. Thracia pubescens Pult. 



16. Mytilus sp. 



17. Anomia Itmula Yok. 



18. Pecten laqueatus Sow. 



19. Pecten laetus Gld. 



20. Pecten tokyoensis Tok. 



21. Pecten cosibensis Yok. 



22. Pectunculus vestitus Dkr. 



23. Nucula insignis Gld. 



24. Terebratella coreanica Ad. 



25. Terebratella? excelsa n. sp. 



26. Terebratella? sp. 



27. Endesia? sp. 



Putting aside the forms not specifically determined there are 

 21 species of which 6 are not yet known to be living. Of these 



