144 JAPANESE MOLLUSKS, PECTENACEA. 



Pecten irregularis Sowerby. Dkr., Index, p. 240, pi. 11, f. 2, la. 



Banda and Nenioto, Boshiii, Tsu-Shima (Stearns) ; Nagasaki 

 (Lischke). 



Pecten quadriliratus Lischke. J. M. C, 11, p. 15S, pi. 9, f. 5, 6. 

 Nagasaki (Lischke). 



Pecten similis Ijaskey. Journ. Linn. Soc, XIV. Corea Strait (St. John). 

 Pecten jickelii Dunker. Index, p. 241. 



Japan Sea (coll. Lobbecke). 



Pecten vesiculosus Dkr. Dkr., Index, p. 241, pi. 11, f. I. 



Japan (Dkr., Stearns). 



Pecten tissoti Bernardi. Journ. de Conch., 185S, pi 91, pi. 1, f. 2. 



Japan (Dkr.). 

 Pecten spectabilis Reeve. Dkr., Index, pi. 11, f. 12, 13. 

 Nagasaki (Lischke). 



Pecten Isetus Gould. Lischke, Jap. Meeres-Conch., pi. 12, f. 6, 7. 



Ikai coast, Joga-Shinia, and Sagama Bay (Stearns) ; Hakodate 

 (Stimp.) ; Tokyo and Nagasaki (Lischke) ; Yokohama (Dkr.). 



Three main color varieties are included in Mr. Stearns' collection : 

 A. Crimson varying to orange ; B. Royal purple varying to brown ; 

 and C. Pure white. 



Pecten yessoensis Jay. Dkr., Novit. Conch., p. 61, pi. 21; Lischke, Jap. Meeres- 

 Conch., I, pi. 10, f. 34 ; II, pi. 13. 



Hakodate (Stearns, et al) ; Yedo (Lischke). 



Pecten plica Linne. C. Icon., VIII, sp. 16. 

 Nagasaki (Lischke). 



Pecten subplicatus Sowb. C. Icon., sp. 17. 

 Japan (Dkr.). 



Pecten vitreus Chemnitz. Conchyl. Cab., VII, f. 637. 



Yokohama Harbor, 345 fathoms (Challenger). 



Pecten swiftii Bernardi. Journ. de Conch., 1858, p. 90, pi. 1, 2. 



Northern Japan (Schrenck). 



Pecten asperulatas Adams & Reeve, Zool. Samarang, p. 74, pi. 21, f. 13. 

 Corea Strait. 



Pecten psarus Melvill, Journ. of Conch., V, p. 280, pi. 2, f. 9. 



Japan. 



