U. S. B. F.— Doc. 920. 



FIG. n.— SHELL OF Saxidomus giganteus, TWO-THIRDS NATURAL 



SIZE. 



This species is characteristic of Netarts Bay, but is not so abundant there as 

 it was a few years ago. It is one of the best food clams of the Northwest and 

 makes an excellent market clam as its shipping quaUties are good. Its scarcity 

 in Netarts Bay at the present time, however, precludes its shipment to outside 

 markets. See discussion under Netarts and Tillamook Regions, beginning on 

 page 12. 



FIG. 12.— SHELL OF Cardium corbis, THE "COCKLE," TWO-THIRDS 

 NATURAL SIZE. 



This species is well distributed from Coos B.iy northward along the Northwest 

 coast, and is abundant in Tillamook Bay. 



