Smithsonian Report, 1936. — Pycraft 



Plate 4 



Cetacean Flippers. Externally closely alike. (Internally These Have 

 Very Diverse Responses to External stimuli.) 



A, Hump-back whale (Megaptera'^; B. bottle-nose dolphin (Tursiops); C, gangetic dolphin (PInnista); 

 D, lesser rorqual (Baliienoptera); E, right whale {Balaena); F, pilot whale {Globkephalus); G, killer whale 

 (Orcinvs). 



