xvi INDEX. 



ORDER J.-ACEPHALA TESTACEA-f conhntitrf), 



Anodontea, 94 



Iridina, 95 



Dipsada, 95 

 Ujiio, 95 



Hyria, 95 



Castalia, 95 

 Cardita, 96 

 Cypricardia, 96 

 Coralliophagia, 96 

 Venericardia, 96 

 Paphia, 96 



Fam. 3. CHAMACEA, 97 



Chama, 97 

 Tridacna, 97 



Tridacna proper, 97 



Hippopus, 98 



Chama, 98 



Diceras, 98 



Isocardia, 98 



p am , 4. CARDIACEA, 99 



Cardium, 99 



Hemicardium, 99 



Donax, 99 



Cyclas, 100 



Cyrena, 100 

 Cyprina, 100 

 Galathsea, 101 



Corbis, 101 



Tellina, 101 



Loripes, 102 



Lucina, 102 



Ungulinsea, 102 



Venus, 102 



Astartse, 103 

 Crassinsea, 1 03 

 Cytherae, 103 

 Capsa, 104 

 Petricola, 104 



Corbula, 104 



Mactra, 104 



Mactra proper, 104' 

 Lavignons, 105 



Fam. 5, -INCLUSA, 105 

 Mya, 105 



Lutraria, 105 

 Mya proper, 106 

 Anatina, 106 

 Solemya, 106 



