Order I.— ACEPHALA TESTACEA— (continue J). 



Anodontea, 94 



Iiidina, 95 



Dipsada, 95 

 Unio, 95 



Hyria, 95 



Castalia, 95 

 Cardita, 96 

 Cypricardia, 96 

 Coralliophagia, 96 

 Venericardia, 96 

 Paphia, 96 



Favi. 3. — Chamacea, 97 

 Chama, 97 

 Tridacna, 97 



Tridacna proper, 97 



Hippopiis, 98 



Chama, 98 



Diceras, 98 



Isocardia, 98 



Fam. 4. — Cardiacea, 99 

 Cardium, 99 



Hemicardium, 99 

 Donax, 99 

 Cyclas, 100 



Cyrena, 100 



Cyprina, 100 



Galathrea. 101 



Corbis. 101 I 



Tellina, 101 I 



Loripes, 102 



Lucina, 102 



Ungulinaea, 102 



Venus, 102 



Astartje, 103 

 Crassinsea, 103 

 Cytherjp, 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 

 Solemva. 106 



