1893.] Recent Literature. 729 
Cephalopoda. 
Order Tetrabranchiata D 21 
Order Dibranchiata 1 1 
INVERTEBRATA OF THE NEW JERSEY EOCENE MARLS. 
Gasteropoda. 
Genera Species 
Subelass Prosobranchiata 
Order Pectinibranchiata 25 45 
Order Scutibranchiata 2 4 
Subclass Opisthobranchiata 
Order Tectibranchiata 3 3 
Cephalopoda. 
Order Tetrabranchiata 2 2 
