PORPOISES, DOLPHINS 



Harbor Porpoise; Bay Porpoise; Herring Hog. — Plwccena 



phoccpna (Linnaeus). 



Total length about 68 inches. Found on both coasts, 

 ascends rivers. 



Fig. 144. Harbor Porpoise 



Genus Phocoenoides 



Dall Porpoise. — Phoccenoides dalli (True). 



Dorsal and ventral margins of the body near the flukes 

 raised into prominent, thin ridges; head without beak. 

 Color black, with large whitish area on belly and lower side 

 as far forward as plane of dorsal fin. Total length about 

 72 inches. Found on the coast of Alaska. 



Subfamily Delphinapterinae 



Genus Delphinapterus 



Color everywhere white. 



White Whale; Beluga. — Delphinapterus leucas (Pallas). 



Total length about 11 to 12 feet. Found in Arctic and sub- 

 arctic seas; recorded from as far south as Atlantic City, New 

 Jersey. 



Fig. 145. White Whale 

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