Plate VI. 



Pyramidella (Actaeopyramis) eximia Lke. Otake. P. 94. 

 Stoiïiatella lyrata Pils. Ötake. P. 115. 

 Macroscliisma sinensis Ad. var. laevis Yok. Ötake. P. 115, 

 Pnncturella nobilis Ad. Shitö. P. 116. 

 Emai'ginnla vadososinnata Yok. Sliitö. P. 117. 



Dentalium weinkauffii Dkr. Otake. P. 118. (The concave side should have 

 been drawn with a more uniform curve). 

 Fig. 7. Dentalium (Fustiaria) nipponicum Yok. Shito. P. 119. 

 Figs. 8, 9. Corbula erythrodon Lam. 3- nat. size. 8. Right valve. 9. Left valve. 



Ötake. P. 122. 

 Fig. 10. Jouannetia kamakurensis Yok. Shitö. P. 120. 

 Fig. 11. Eutodesma naviculoides Y^ok. Shitö. P. 170. 



Figs. 12, 18. Trapezium nipponicum Yok. (very young specimens)"?. Shitö. P. 270. 

 Figs. 14, 15. Panope generosa Gld. Left valves. 14. Normal form. Tega. 15. 



Elongated form, f nat. size. Ötake. P. 121. 

 Figs. 10, 17. Corbula frequens Yok. 10. Left valve. 17. Right valve. Shitö. P. 



128. 

 Fig. 18. Corbula pustulosa Yok. Right valve. Ötake. P. 123. 



Figs. 19, 20. Corbula sematensis Yok. 19. Right valve. 20. Left valve. Shitö. P. 

 124. 



