40 CALIFORNIA MAMMAUS. 



Grampus griseus Cuvier. ( Gray. ) 



COMMON GRAMPUS. 



Head globose with a suggestion of a beak; lower jaw shorter 

 than upper; flukes narrow. Adult: back, dorsal fin and flukes 

 dark gray or blackish, more or less tinged with purple; pectoral 

 fins blackish mottled with gray ; head and front part of body light 

 gray tinged with yellow; belly grayish white; body miarked with 

 numerous irregular unsymmetrical streaks. Young; dark gray 

 above; below grayish white; head whitish strongly tinged with 

 yellow ; sides with five or more narrow vertical stripes. 



Length about 3200 mm-. (125 inches) ; end of jaw to dor- 

 sal fin 1200 (48); height of dorsal fin 400 (16); breadth of 

 flukes 720 (28) ; length of pectoral fin 600 (24). 



North Atlantic and north Pacific Oceans. Mediterranean 

 Sea. Japan. California. 



Dall separated the Pacific Ocean animal under the name 

 of stcarusi ; but True cansiders them not seperable. The habits 

 of Grampuses are similar to those of Porpoises. 



Genus Lagenorhynchus Gray. (Flagon — snout.) 

 Dorsal and pectoral fins long and curved ; rostrum large and 

 broad ; teeth 22 to 45 ; vertebrae 73 to 92. 



Lagenorhynchus obliquidens Gill. (Oblique — teeth.) 



STRIPED PORPOISE. 



Form stout ; beak \-ery short ; dorsal fin high, pointed, strong- 

 ly curved; pectoral fins and flukes broad; teeth 31 — 31 ; vertebrae 



74- 



Length about 2200 mm. (87 inches) ; end of jaws to dorsal 



fin 915 (36) ; breadth oi flukes 600 (24). 



North Pacific Ocean. Puget Sound. California. 



"This species of the smaller Dolphins varies but little in its 

 general proportions from the Common Dolphin, except in its 

 back fin which is more falcated and slender, and its snout, which 



