Plate VIII. 



Figs. 1, 2. Spisnla grayana ScLr. Sliito. P. 130. 



Figs. 3, 4. Spisula benmrdi Pils. Kioroshi. P. 130. 



Figs. 5, 6. Eaeta yokobamensis Pils. Ötake. P. 131. 



Fig. 7. Kaeta elliptica Yok. Tega. P. 131. 



Fig. 8, Tresus nuttali Conr. ^ nat. size. Ötake. P. 133. 



Figs. 9, 10. Lutraria maxima Jon. f nat. size. Ötake, P. 133. 



Fig. 11. Teilina nitidnla Dkr. Shisai. P. 139. 



Figs. 12, 13. Eaeta magnifica Yok. Tega. P. 132. 



