THE LINNEAN GENERA. 



xvn 



Linnean Genera. 



12. Chama 



13. Area 



14. Ostrea 



15. Anomia 



16. Mytilus 



17. Pinna 



18. Argonauta, 



Lamarckian Genera. Plate. Figure. 



fChama 9 18 



J Cardita 9 4 



J Cypricardia 9 17 



j Isocardia 9 1 



Tridacna 9 2 



^Hippopus 9 3 



fArca 9 2 



J Cucullaea 9 16 



] Pectunculus 10 36 



(.Nucula 9 27 



fOstrea 11 74 



Crenatula 11 82 



Perna 11 80 



Malleus 11 58 



} Pedum 11 75 



Lima 11 54 



Gryphaea 10 1 



.Pecten 10 1 



f Anomia 11 $ 



| Placuna 12 30 



j Crania 11 1 



Orbicula 11 g 



Terebratula 11 24 



^Hyalaea 11 28 



Mytilus 12 28 



Saxicava 12 9 



Anodon 12 32 



Modiola 12 31 



Avicula 12 42 



.Meleagrina 12 4 



Pinna 12 1 20 



j Argonauta 13 1 3 



7 Carinaria 13 Q 



b 



