144 JAPANESE MOLLU8KS, PECTENACEA. 



Pecten irregularis Sowerby. Dkr., Index, p. 240, pi. 11, f. 2, 15. 



Banda and Nemoto, Boshiu, Tsu-Shima (Stearns) ; Nagasaki 

 (Lischke). 

 Pecten quadriliratus Lischke. J. M. C., II, p. 158, pi. 9, f. 5, 6. 



Nagasaki (Lischke). 



Pecten similis Laskey. Joarn. 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. 1. 

 Japan (Dkr., Stearns). 



Pecten tissoti Bernardi. Journ. de Conch., 1858, pi 91, pi. 1, f. 2. 



Japan (Dkr.). 



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

 Nagasaki (Lischke). 



Pecten laetus Gould. Lischke, Jap. Meeres-Cunch., pi. 12, f. 6, 7. 



Ikai coast, Joga-Shima, 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. 



Peoten 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 Linn. C. loon., 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 asperulatus 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. 



