212 



MOLLUSKS: ACEPHALS. 



dred pounds, and two feet across, are used as vessels 

 for the holy water. The Tridacna lives in the Pa- 

 cific and Indian Oceans. 



Fig. 432. — Pecten. From Cape Ann 

 southward. 



Fig. 433. — Mytilus. Both 

 shores of the Atlantic. 



Fig. 434. — Avicula. Fig. 43.5. — Leda. Fig. 436. — Cardicum. 



Reduced. Mediterranean. New England. Reduced. New England. 



OYSTERS, PECTENS, MUSSELS, PEARL-OYSTERS, &c. 



Oysters are more Highly prized for food than any 

 other mollusks. They occur in the greatest quanti- 

 ties on the coast of the Middle States, especially in 

 Delaware and Chesapeake Bay. 



Pectens, or Scallops, Figure 432, are also prized for 



