43 



Family 2d. Suborbicular, margins crenatecl or plaited. 



Scientific name. Locality. Scientific name. 



Pectunculus, South America,Recl Sea. Glycymeris, 



Pectinata, West Indies. 



Decussata, East & West Indies. Pilosa, 



Pallens, India. Stellata, 



Undata, West Indies, Med. Scripta, 



Nutnmaria, 



Locality. 

 Red Sea, Guernsey. 

 Britain, Mediterranean. 

 Med., Britain, Spain. 

 Portugal, Africa. 

 St. Domingo. 

 Mediterranean, Spain. 



Family 3d. Suborbicular, margin entire. 

 Multistriata, Red Sea. 



DIVISION III. With the teeth of the hinge produced and sharply pointed. 



Nucleus, Britain, Mediterranean, Minuta, 



St. Domingo. Tenuis, 



Rastrata, Norway, Scotland. 



Baltic, Britain. 

 Dunbar, Leith Roads. 



