JAPANESE MOLLUSKS, LUCINACEA. 133 



valves and a small posterior segment concentrically costulate, the 

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

 Length 17;J, breadth Ldj, diani. ISi mm., sometimes larger. 



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

 known. 



Diplodonta (Mysia) figlina Gkl. Otia Coneh., p. 171. 



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

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



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

 Axinus japonicus A. Ad. Ann. Mag., 1862, p. 227 [Cryplodon). 



Okosiri (Ad.). 

 Axinus oblongas, plicatus A. Ad. Ihid. Mino-Shima(Ad.). 

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

 Axinus suborbicularis A. Ad. 



LUCINID.ffi. 

 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 Gkl. 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, SJxSi mm. at Tokyo Harbor. It does not seem to differ 

 from L.parvuln Gld. of which one of the original siDCcimens 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., Lucina, 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. Dorsallv the valves 



