JAPANESE MOLLUSKS, PTERIACEA. 147 



end 251 mm. Var. " lotorium," length of hinge-line 152 mm. ; ob- 

 lique length from beak to lower end 265 mm. 



Pteria japonica Bunker. Conohyl. Cab., p. 33, pi. 10, f. 5. 



Japan Sea (Dkr.). 



Meleagrina martensii Dkr. Index, p. 229, pi. 10, f. 7, 8. 

 Meleagrina japonica Dunker. Conchyl. Cab., p. 66, pi. 23, f. 2, 3). 



Nagasaki (Lischke) ; S. coast of Kii (Stearns). Girls dive 

 for these shells, which produce numerous pearls. 

 Meleagrina fucata Gould. Conchyl. Cab., p. 49, pi. 17, f. 2. 



Nagasaki. 

 Malleus albus Chemn. C. Icon., pi. 1, f. 1. 



Inland Sea (Stearns) ; Nagasaki (Lischke). 



Malleus regula Forskal. Inland Sea (Dkr.). 



Malleus (Malvufundus) irregularis Jousseaume. Le Naturalists, XVI, 1894, p. 



228. 



Japan. 



PERNIDJE. 



Perna perna Linne. Nagasaki (Lischke, J. M. C., II, p. 153). 

 Perna costellata Conrad. Hakodate (Schrenck). 



PINNIDJE. 

 Pinna chemnitzii Hanley. Reeve, Conch. Icon., pi. 1. 



Yedo, Nagasaki (Lischke) ; Kishiu coast (Stearns). 



The specimens are narrower than Reeve's figure 1 b, and lack the 

 projecting scales along the hinge-margin. Dunker reports chem- 

 nitzii from Yokohama and Tokyo. 

 Pinna bioolor Chemn. Conchyl. Cab., VIII, pi. 90, f. 780. 



Japan (Dkr.). 



Pinna fimbriatula Rve. C. Icon., sp. 63. Japan (Cuming). 

 Pinna saccata Linne. Japan (Dkr.). 

 Pinna japonica Hanley. Conchyl. Cab., p. 72, pi. 24, f. 3; pi. 29, f. 1. 



Yokohama Bay, Yedo, Nagasaki (Lischke). 

 Pinna nigrina Lamarck. Rve., Conch. Icon., f. 4, (P. nigra). 



Tokyo Harbor (Stearns). The largest shell measures, length 365, 

 breadth 240 mm. It is smooth outside except for low radii near the 

 beaks. The smaller specimens are strongly scaled as in Reeve's fig- 

 ure. 



