JAPANESE MOLLUSKS, LUCINACEA. 133 



valves and a small posterior segment concentrically costulate, the 

 rest having the costulae interrupted into long granules ; no lunule. 

 Length 17i, breadth 15 J, diam. 133 mm., sometimes larger. 



9 specimens collected by Mr. Stearns in Japan, exact locality un- 

 known. 

 Diplodonta (Mysia) figlina Gld. Otia Conch., p. 171. 



E. coast Japan, Lat. 37, in coarse black sand, 20 fath. (Stimp.). 

 Diplodonta (Felania) usta Gld. Otia Conch., p. 170. 



Hakodate Bay, 8 fath., sandy mud (Stimpson). 

 Axinus japonious A. Ad. Ann. Mag., 1862, p. 227 (Cryplodori). 



Okosiri (Ad.). 



Axinus oblongus, plicatus A. Ad. Ibid. Mino-Shima(Ad.). 

 Axinus flexuosus Mont. Corea Strait (St. John). 

 Axinus suborbicularis A. Ad. 



LUCINIDJE. 

 Lucina contraria Dkr. Index, p. 215, pi. 13, f. 12-14. 



Tokyo (Dkr.). 



Lucina divergens Phil. Abbild., Ill, p. 103, pi. 2, f. 4. (L. fibula A. & R., Zool. 

 Samarang, pi. 24, f. 5, teste Dkr.). 



Deshima (Dkr.) ; Nagasaki (Lischke). 



Lucina parvula Gld. Otia Conch., p. 174. 



Hakodate, 6-20 fath., sand (Stimp.). 

 Lucina pisidium Dkr. Moll. Jap., p, 28, pi. 3, f. 9. 



Deshima (Dkr.) ; Nagasaki (Lischke). Stearns collected larger 

 specimens, 8?x8 mm. at Tokyo Harbor. It does not seem to differ 

 from L. parvula Gld. of which one of the original specimens is be- 

 fore me. 



Lucina quadrisulcata d'Orbigny (?). Tartary Strait (Dkr.). 

 Lucina corrugata Dkr. Index, p. 216, pi. 8, f. 9-11. 



Inland Sea (Dkr.). 



Loripes philippiana Reeve. C. Icon., Ludna, f. 23 (Venus edentula L., of Phil, 

 and Dkr.). 



Loripes bialata n. sp. PI. Ill, figs. 13, 14. 



Shell resembling the West Indian L. edentula, but thinner, more 

 ventricose, beaks larger above the hinge-line, hinge straighter, the 

 ligament-plate much shorter and narrower. Dorsally the valves 



