Tin: r 





apparatus (syrinx), or lower larynx, is situated next to the 

 langa at the end of the windpipe, with a musculai 

 ratua formed of five <>r six pairs of muscles, w] 

 varies the ti of the vocal c id narr 



theglottid.es, which are elastic folds of the mucous 



Fig. C74.— TlieRed Binl of rani.iis-. Ft 



brane. A fold of the tympanal membrane of the 

 called the membrana semilunaris, pr< 



Representatives of the I the A adian fly- 



catcher, the wood pewee, the ]<■ and the 



erbird (Fig. 271). The last, e metim , called the 



