548 



Comparative Morphology of Chordates 



*^% 



Fig. 425. Capped petrel, Oestrelata haesitata (Kuhl). (Courtesy, Saunders: "Manual 

 of British Birds," London, Gurney & Jackson.) 



Fig. 426. American white pelican, Pelecanus erythrorhynchos. (Courtesy, Knowlton 

 and Bidgway: "Birds of the World," New York, Henry Holt & Co., Inc.) 



