FIELD BOOK OF MAMMALS 



Pacific Right Whale Porpoise. — Lissodelphis horealis (Peale). 

 Total length about 97 inches. Found in the North Pacific 

 Ocean: California. 



Fig. 137. Pacific Right Whale Porpoise 

 Genus Lagenorhynchus 



"Sides with two areas of light color separated by irregular, 

 oblique dark bands." (True) 



Striped Dolphin; Striped Porpoise; White-sided Dolphin. — 



Lagenorhynchus aciitus (Gray). 

 Total length about 99 inches. Found in the North Atlantic 

 Ocean, south to the coast of the United States; Cape Cod. 



Fig. 138. Striped Dolphin 



White-beaked Dolphin. — Lagenorhynchus alhirostris Gray. 

 Like acutiis, but forehead more swollen, larger pectoral fins 

 and more strongly reclined dorsal fin. Base of forehead, 

 beak, and mandible white, more or less tinged with gray. 

 Found in North Atlantic Ocean; Greenland; Davis Strait. 



Pacific Striped Dolphin. — Lagenorhynchus ohliquidens Gill. 

 Aluch like acutus. Total length about 87 inches. Found 

 in the North Pacific Ocean: California; Puget Sound. 



Gentts Orcinus 



"Color black, with a large and sharply contrasted ventral 

 area of white, forming a trident posteriorly, the lateral tines 

 of which extend up on the sides." (True). 



Atlantic Killer. — Orcinus orca (Linneeus). 



Total length 20 feet or more. Found in all seas. 



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