12 MAMMALS OF EASTERN MASSACHUSETTS 



Grampus; Cowfish. Grampus griseus (Cuvier). 



This species probably occurs off our coast. Length 10 

 feet. In general shape, very much like the Blackfish, but 

 color dark gray above, lighter beneath, irregular lighter 

 stripes on sides. Teeth on upper jaw entirely absent, 6 to 

 14 on lower jaw. Habitat: off North Atlantic Coast south 

 to New Jersey. See Plate 3. 



Common harbor porpoise; Puffing pig. Phocaena 

 phocaena (Liune). 



Length of full grown specimen about 5 feet. Very com- 

 mon off our coast and in the harbors, travelling in small 

 schools, coming often to the surface and making a sort of 

 rolling dive, exposing the back and dorsal fin. Head rounded 

 in front, no beak. Color black on back, shading gradually 

 to white on belly. Sides tinged with pinkish. A dark band 

 from lower jaw to front of flipper. Teeth 26 in each jaw. 

 Range North Atlantic south to New Jersey. See Plate 4. 



Striped Dolphin ; Skunk porpoise. Lagenorhynchus 

 acutus (Gray). 



Length 8 feet. Teeth 35 above, 37 below. Beak extreme- 

 ly short. Color black on back. Sides with white and yel- 

 lowish patches. A narrow stripe from base of tail half way 

 to middle of body. Black line around eye extending to 

 snout and flipper. Range North Atlantic south to Cape Cod. 



Common dolphin ; Ring-eyed porpoise ; Sea por- 

 poise. Delphinus delphis Linne. 



This is a pelagic species and is seldom found near the 

 shore. It is about 7 feet long when full grown and has a 

 long narrow beak. The color is black above, several 

 curved stripes on sides, a narrow black line around the eye 

 extending to the beak. Teeth 47 to 50 above, 46 to 51 

 below. See Plafe 3. 



Bottle-nose porpoise. Tursiops truncatus (Montagu). 



Not common. Color dark gray above shading gradually 

 to pure white on under parts. Migratory and travels in 

 schools. Teeth 22 in each jaw. Range North Atlantic 

 coast, Maine to Florida. 



