766 



Comparative Morphology of Chordates 



Fig. 580. Skull of toothed whale, Steno rostratus. (Courtesy, American Museum of 

 Natural History, New York.) 



Fig. 581. Sperm whale, Physeter macrocephalus. (Courtesy, Flower and Lydekker: 

 "Introduction to the Study of Mammals," London, A. & C. Black. Ltd.) 



Fig. 582. Southern right whale, Balaena australis. (Courtesy, Flower and Lydek- 

 ker: "Introduction to the Study of Mammals." London, A. & C. Black. Ltd.) 



