Plaie X. 



1. Cardium braunsi Tok. Left valve, a. Outside, b. Inside. Kami-Miyata. 

 p. 129. 



2, 3. Diplodonta semiaspera l'hil. 2. EigLt valve, a. Outside, b. Inside. 

 3. Left valve. Koshiba. p. 131. 



4. Diplodonta japouica Pilsb. Left valve, a. Outside, b. Inside. Naganuma. 

 p. 131. 



5. 



Fig. 

 Figs. 

 Fig. 

 Fig. 

 Fig- 

 Fig. 

 Fig. 



Fig. 

 Figs. 



Figs. 13, 14 



Diplodonta gouldi Yok. 

 c. Showing depth. 

 Lu ein a pisidium Dkr. 



c. Showing depth. 



a. Outside, b. Inside. 



7. 

 8. 



Fig. 

 Fig. 



Enlarged. Eight valve 

 Kaini-Miyata. p. 132. 

 Enlarged. Eight valve. 

 Shimo-Miyata. p. 132. 

 Lueina borealis L. Left valve, a. Outside, b. Inside. Yokosuka. 

 Lucina contraria Dkr. Enlarged. Left valve. a. Outside. 

 Shimo-Miyata. p. 134. 



9. Lueina yarnatawai Yok. Enlarged. Eight valve. 

 c. Showing depth. Shimo-Miyata. p. 135. 



10, 11, 12. Lueina spectabilis Yok. 10. Left valve. 

 Left valve, a. little more rounded and showing the anterior muscular 

 impression. Ivoshiba. p. 134. 



Cbama semi pu rpu rata Lke. 13. Lower valve, a. Outside, 

 c. Showing depth. 14. Upper valve a. Outside, b. Inside 

 ing depth. Kami-Miyata. p. 136. 



Cardita cumingiana Dkr. Left valve, a. Outside, b. Inside. 

 ing depth. Yokosuka. y. 137. 

 16. Cardita variegata Brug. Left valve, a. Outside, b. Inside, c. Showing 

 depth. Shimo-Miyata. p. 136. 



15 



a. Outside, b. Inside. 



p. 133. 

 Inside. 



a. Outside, b. Inside. 



11. Eight valve. 12. 



b. Inside, 

 c. Show- 



c. Show- 



