130 JAPANESE MOLLUSKS, VENERACEA. 



Tapes punctata Chemnitz. 



Japan (Stearns). Several specimens agreeing well with Reeve's 

 fig. 16a ("radiata"). 



Tapes philippinarum Adams <k Reeve. Ad. A Rv., Voy. Samarang, pi. 22, f. 10; 

 Lischke, Jap. Meeres-Conch., Ill, pi. 5, f. 17-26 



Bay of Yedo (Lischke) ; coast from Tokyo to Ojima (Stearns) ; 

 Seta coast (Stearns) ; Nagasaki, Hakodate (Lischke). 



Some specimens agree well in color with the figure in the Sama- 

 raug Zoology ; others show lines and zigzags. The typical form is 

 deep purple in the pallial sinus and its vicinity. The var. ducalis 

 Roemer, id entirely white within. Lischke does not recognize 

 Roemer's form as distinct. 



Tapes variegatus Hanley. Thes., II, p. ft96, pi. 151, f. 133-138. 

 Yedo, Nagasaki (Lischke). 



Tapes bruguieri Hanley. Kino-o-Shima (Ad.). 

 Saxidomus purpuratus Desh. 



Yedo (Lischke) ; Hakodate (Schrenck) ; Seto-Uchi, Mososeki (A. 

 Ad.) ; Tokyo Harbor (Stearns). 



Gomphina donacina Chemnitz. Conchyl. Cab., p. 185, pi. 23, f. 1, 2. 

 Nagasaki (Lischke). 



Gomphina melanaegis Roemer. Novit. Conch., p. 40, pi. 12, f. 12, 13; Jap. Meerea- 

 Com-.h., Ill, pi. 7, f. 10, 11. 



Inland Sea (Stearns) ; Bay of Yedo (Lischke). 



Gemma gemma Totten. Aniwa Bay (A. Ad.). 



(Isocardiacea). 

 ISOCARDIIDJE. 

 Isocardia tetragona Ads. & Rve. Zool. Samarang, p. 76, pi. 22, f. 1. 



Japan Sea. 



Isooardia moltkiana Chemn. Ibid, pi. 22, f. 3. 

 Corea Strait. 



( Tridacnacea). 



TEIDACNIDJE. 



Hippopus maculatus Linn. S. Japan (Stearns). 

 Tridacna squamosa Lam. Ohosaka, Hiogo (Lisohke). 



