STRUTIIIONES 



509 



syrinx, a statement, however, which does not, as was first 

 shown by ALix, 1 apply to RJiea. In that bird (see woodcut, 



FIG. 239. SYRINX OF Casuarius galcatus. FRONT VIEW.! (AFTER FORBES.) 



FIG. 240. THE SAME, FROM BEHIND. 



figs. 237, 238) there is not merely a pair of intrinsic muscles, 2 



1 Bull. Soc. Phil. 1874, p. 38. 



- First noted, apparently, by PARKER in TV. Z. S. vol. v. p. 238, foot note. 



