132 GUAN. 



and those of the neck and breast much the same ; those on the sides 

 of the breast are also margined with white on the edges, but not at 

 the ends ; belly rufous, mottled with dusky black ; wing coverts like 

 the back, but the lower part of the latter is deep brown ; tail much 

 rounded, or very slightly cuneiform ; the two middle feathers nearly 

 fourteen inches long, the outer one not quite ten ; the first quill 

 feather is shorter than the next by four inches and a half, each 

 growing longer by degrees to the fifth, which is the longest; the 

 colour brown, especially on the outer webs ; the sides of the head 

 covered with a naked, purplish blue skin, in which the eyes are 

 placed ; beneath the throat, for an inch and a half, the skin is loose, 

 fine red, and covered only with a few hairs ; legs red, claws black. 



Some birds have little or no crest; are a trifle smaller; and 

 supposed to be females. 



Inhabits Brazil, and other parts of South America, where it is 

 often made tame, and frequently makes a noise like the word Jacu : 

 the flesh is much esteemed. The above described from a specimen 

 in the collection of A. Mc. Leay, Esq. who received it from Berbice, 

 by the name of Maroedi. 



A great singularity is observable in respect to the trachea, or 

 windpipe of this species, similar indeed to that of the Marail,* and 

 Parraqua Species, but far exceeding them in structure; for it descends 

 so low on the belly under the skin, as nearly to reach the vent, before 

 it returns upwards, to pass over the clavicle into the cavity of the 

 thorax ; besides which, it has a double upwards on the lower part of 

 the belly ; it differs, too, in passing down on the right side of the 

 breast, and not on the left, as in the others. What end the above 

 construction of parts is meant to answer, we are yet to learn ; nor is it 

 certain that both sexes have the trachea formed in the same manner. 



* Buffon confounds the Guan with the Marail, from which it differs in the internal 

 structure ; but this proof, now fully convincing, was not known at the time, when that 

 author wrote. 



