— 74 — 

 TRIGONIAD.E V. 



Tiigouia, 2 species, 9 specimens. New Soutb Wales. 



UNIONIDJE VI. 



Unio, 47 species, 57 specimens. North Au stralia, United 

 States, Richmond River, Brazil, New River, China, Mex- 

 ico, France, Rio Grande. 



Hyria, 2 species, 3 specimens. R. Amazon. 



Anodon, 4 species, 6 specimens. Chiua, Ireland ? 



Iridina, 5 species, 6 specimens. Nile, Senegal, Baja ? 



Pleiodon, 1 species, 1 specimen. Brazil. 



iEetheria, 1 species, 1 specimen. Nile. 



CHAMID.E VII. 



Chama, 3 species, 4 specimens. Adriatic Sea, West Indies, 



Malta. 

 Cleidotherus, 1 species, 1 specimen. Sidney. 



TRIDACNID^ IX. 



Tridacna, 5 species, 8 spocimens. China, Iudian Ocean. 

 Hippopus, 1 species, 2 specimeus. China. 



CARDIAD.E X. 



Cardium, 25 species, 41 specimens. New Caledonia, Senegal, 



West Indies, St. Domingo, Malta, Sicily. 

 Pythina, 1 species, 2 specimeus. Nevv Georgia. 



LUCINID^E XI. 



Lucina, 10 species, 29specimens. China, Java, Brazil, Sicily, 



Malta. 

 Diplodouta, 2 spccies, 9 specimens. California ? 

 Loripos, 1 species, 5 specimens. Ncw Zealaud ? 



