JBIVALVIA. 
Moll. 89 
Saxicayidj:. 
Panopcea aldrovandi , new localities ; Robelt, Nachr. mal. Ges. 1882, 
p. 47. 
Glycymeris generosa (Gould), note on its occurrence on the Pacific 
coast at extreme low tide, and suggestions as to its introduction into the 
Atlantic coast of the United States, by J. A. Ryder & H. Hemphill, 
Bull. U. S. Fish Comm. i. pp. 21, 200, & 201. 
SOLENIDJC. 
Solen gouldi (Conrad) ; Dunker, Moll. Jap. p. 173, pi. xvi. fig. 11, Japan. 
Ensiculus marmoratus andj philippianus (Dkr., Cultellus ) ; id. 1. c. p. 174, 
pi. vii. figs. 21 & 23, Japan. 
DoNACIJDiE. 
Donax mesodesmoid.es and listeri, locality unknown, jloridus , Borneo, 
and impar , Baluchistan, spp. nn., Hanley, J. L. S. xvi. pp. 539-541, pi. xii. 
figs. 1-4. 
Donax dohrnianus, sp. n., Jickeli, JB. mal. Ges. ix. p. 3G9, Massowa. 
Paphiidje. 
Donacilla picta (Dkr.) ; Dunker, Moll. Jap. p. 195, pi. vii. figs. 7-10, 
Japan. 
Lcptomya psittacus, locality unknown, and spectabilis, Japan P, spp. nn., 
Hanley, P. Z. S. 1882, pp. 576 & 577 : both, with L. gravida and cochlearis 
(Hanl.) ; figured without description, J. L. S. xvi. p. 541, pi. xii. figs. 5-8. 
Theora lubrica (Gould) ; Dunker, Moll. Jap. p. 181, pt. 7, figs. 20-22, 
J apan. 
MACTRIDiE. 
Mactra. 29 known species described and figured (many of them 
copied from Reeve or J. de Conch.) by Weinkauff in Kiister’s Conch. 
Cab. pt. 314. M. ambigua , new name for silicula (Reeve, nec Desh.), 1. c. 
p. 74, pi. xxvi. fig. 1. 
Trigonella crossii (Dkr.) and straminea, sp. n., Dunker, l. c. p. 183, 
pi. vii. figs. 1-6, Japan. 
V EN BRIDGE. 
Dosinia gibba (A. Ad.) and orbiculata (Dkr.), Dunker, l. c. p. 204, 
pi. viii. figs. 4-G & 12-14, Japan. 
Mercenaria paucilamellata (Dunker) = Venus alata (Reeve), Port 
Jackson, Tasmania, and Swan River ; Brazier, P. Linn. Soc. N. S. W. v. 
p. 486. 
Tapes greejjii (Dkr.), Dunker, l. c. p. 207, pi. viii. figs. 15-17, Japan. 
Rupellaria semipurpurea , sp. n., id. 1. c. p. 208, Japan. 
Petricola japonica, sp. n., id. 1. c. p. 209, pi. ix. figs. 4-6, Japan. 
