ro2 Dr. LatHam’s Ejay on the Trathee 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 breaft, 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 paffes down on 
the right, and, contrary to the others, returns ‘upwards, and goes 
into the cavity of the thcrax 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 fketched as they appeared 
in the recent ftate. 
VV. CRAX PAUXI—Cusuew Curassow. Tab. xi. Fig. 1 & 2. 
Cr. cera coerulea, narium gibbere criftato, corpore nigricante, 
_ ‘abdomine apiceque caudz albis. 
Crax Pauxi, Linn, Sy}. Nat. i. p. 270.—Ind. [Oem 2. —p. ee 
Bri. Ornis p. 302. 
‘Hocco de Mexique, Le Pierre, Buf. O/ ii. p. a —Pl. Enl. 78.— 
‘Mem. de P Acad. des Scien. 1781. p. 376. pl. viii. 
Cufhew Curaflow, Edw. Pl. 295. f. 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 
breaft under the fkin in a fimilar manner, and firft paflesdownward | 
over the right pectoral 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 Jength, and fomewhat in the fhape of a ring; after 
which it returns again over the right pectoral mufcle, and turns 
over the clavicle into the thorax. 
The 
