— 73 — 



Pecten, 24 species, 62 specimens. China, New Caledonia, 



Malta, Sicily. 

 Lima, 4 species, 8 specimens. Malta. 

 Plagiostoma, 1 species, 2 specimens. Batavia. 

 Spondylus, 6 species, 14 specimens. China, Malta. 

 Pedum, 1 species, 1 specimen. Red Sea. 

 Plicatula, 2 species, 2 specimens. Lord Hood's Islaud. 



AVICULID^: II. 



Avicula, 2 species, 3 specimens. New Caledonia, Malta. 

 Meleagrina, 1 species, 4 specimens. Panama. 

 Malleus, 5 species, 9 specimens. China, Australia. 

 Vulsella, 2 species, 4 specimens. Australia. 

 Perna, 1 species, 2 specimens. Lord Hood's Island. 

 Pinna, 11 species, 23 specimens. Society Islands, Pitium, 

 Panama, Malta. 



MYTILIDiE III. 



Mytilus, 13 species, 28 specimens. Valparaiso, Australia, 



Adriatic Sea, Malta. 

 Modiola, 11 species, 40 specimens. Adriatic Sea, Malta, 



New Caledonia, Guayaquil, Australia. 

 Lithodomus, 2 species, 8 specimens. Malta. 

 Dreissena, 2 species, 5 specimens. Varna. 



ARCADiE IV. 



Arca, 23 species, 44 specimens. China, Java, Philippine 

 Islands, New Holland, Gambia, Central America, South 

 Sea, Malta, China ? 



Cuculhea, 1 species, 3 specimens. 



Pectunculus, 6 species, 12 specimens. East Indies, West 

 Columbia, Iquiqui Coasfc, Sicily and Malta. 



Nucula, 1 species, 4 specimons. Malta. 



Solemya, 2 species, 11 specimens. Malta. 



