14 J MANUEL DE CONCHYLIOLOGIE. 



RESUME GENERAL. 



VIVANTS. FOSSILES. 



Dibranchiata 20i ^189 



Tetrabranchiata 6 2,193 



Prosobranchiata 8,465 S,819 



Pulmonifera inoperculata 5,404 542 



Pulmonifera operculata 931 46 



Tectibranchiata 556 263 



Nudibranchiata 518 — 



Nucleobranchiata 35 160 



Pteropoda 85 95 



Brachiopoda 102 1,842 



Conchifera 4,295 7,419 



20,502 18,56 



