Plate XII. 



Fig. 1. Pecten tokunagai Yok. Eight ? valve. Koshiba. p. 158. 



Figs. 2-6. Pecten miurensis Yok. 2. Right valve. 3. A part of a large specimen. 



4-6. Left valves. Zusbi. p. 157. 

 Pecten crassicostatus Sow. A fragment of right valve. Naganuina. p. 153, 

 Lima zushiensis Yok. Left valve. Zusbi. p. 148. 

 Lima japonica Adams. Enlarged. Left valve, a, b, c showing its different 



views. Nojima. p. 149. 

 Lima subauriculata Mont. Left ? valve magnified, a, b, c showing its 



different views. Ivami-Miyata. p. 150 

 Lima quantoensis Yok. a, b, c. Different views of a left valve. Koshiba. 



p. 150. 

 Lima angulata Sow. a, b, c. Different views of a right valve. Naganuraa. 



p. 148. 



