102 Dr. Latham'j EJfay on the Trachea or Windpipes of Birds. 



The Guan frequents the fame places as the two laft birds, and 

 like them is frequently domefticated : but in the fingularity of the 

 windpipe, it far exceeds them ; for it not only defcends much lower 

 on the breafr, but at the bottom part it doubles upwards for at 

 leaft one third of its length : — it differs alfo in another particular ; 

 for, inftead of making a defcent on the left fide, it panes down on 

 the right, and, contrary to the others, returns upwards, and goes 

 into the cavity of the thorax over the left clavicle. — I owe the 

 -drawing of the figure, from which my reprefentation of it is copied, 

 to the kindnefs of my late friend Sir Afhton Lever, who was induced, 

 from its great peculiarity, to have the parts Iketched as they appeared 

 in the recent ftate. 



V. CRAX PAUXI— Cushew Curassow. TaL xi. Fig. i & 2. 



Cr. cera ccerulea, narium gibbere criftato, corpore nigricante, 



abdomine apiceque caudas albis. 

 Crax Pauxi, Linn. Syfi. Nat. i. p. 270. — Ind. Orn. 2. p. 624. — 



Brijf. Orn. i. p. 302. 

 Hocco de Mexique, Le Pierre, Buf. Oif. ii. p. 348.— P/. EnL 78.— 



, Mem. deVAcad. des Scien. 1781. p. 376. pi. viii. 

 Cufhew CurafTow, Edw. PL 295./. 2. — Lath. Syn. iv, p. 696. 



The trachea in this fpecies does not greatly differ from thofe of 

 the Parraka and Guan, but appears to be the largeft, in proportion 

 to the bird, of any yet obferved :•— it extends on the outfide of the 

 bread under theikin in a fimilar manner, and firfr paifes downward 

 over the right pe&oral mufcle, going on ftraight quite to the end of 

 the fternum, at which place it makes a convolution to the left for 

 three inches in length, and fomewhat in the fhape of a ring ; after 

 which it returns again over the right peaoral mufcle, and turns 

 over the clavicle into the thorax. 



The 



