440 STKUCTUflE AND CLASSIFICATION OF BIRDS 



distinctly charadriine. A groove runs forward from the 

 nostrils, as in Scopus, &c. (q.v.) 



Family Phoenicopteridse.i — Phoenicopterus agrees with 

 the storks in the subdivision of the prebronchial air sacs by- 

 many septa into smaller chambers. But, as this also occurs 



Fig. 209. — Sykinx of Phcenicopterus (aptee Weldon). 

 Aa^ front view ; Ac, lateral view. 



in Chauna and to a much greater extent, less weight must 

 be laid upon it than upon some of the muscular characters. 



In the storks, as in Scopus, but not the Anatidse, the pec- 

 toralis major is divided into two distinct layers. This is also 

 the case vnth Phcenicopterus. The tensores patagii are 

 closely similar in the birds under comparison and diverge 

 from those of the duck. The ducks are peculiar in the origin 

 of the smallest head of the gastrocnemius from the biceps ; 



' Our knowledge of the anatomy of the ' soft parts ' of Phanicopterus is 

 mainly due to Weldon (P. Z. S. 1883) and to Gadow {Joum. f. Orn. xxv. 

 p. 382.) 



