GALLINACE. 347 
a fawn coloured belly, appears very distinct. Its trachea, in 
both sexes, forms a.curve at the upper part of the sternum, 
just before it dips into the thorax. 
Orraipa, Merr. 
Or the Parraquas, only differ from the Yacous by having but 
little of the naked space on the throat, and about the eyes. 
Only one species is known; of a bronze-brown above, whitish- 
grey beneath; top of the head red—Catraca, Buff.; Phasianus 
moimot, Gm., and Phas. parraqua, Lath., Enl. 1463;(1) Bajon, 
Cay. pl. 1. Thecry of this bird is very loud, and articulates 
its name. ‘The trachea descends under the skin as low as the 
abdomen, and then ascends to enter the thorax. 
With these different Hoccos naturalists usually associate the 
OristHocomus, Hoffmanseg.—Hoazin, Buff. (2) 
An American bird of similar carriage, with a short and thick 
beak, the nostrils pierced in the horn, and destitute of membrane; 
* the head ornamented with a tuft of long and very narrow and slen- 
der feathers, which is distinguished from all the true Gallinacez, 
by having no membrane between the base of the toes. It is the 
Phasianus cristatus, L., Enl. 337; Vieill. Galer. 193; greenish-brown, 
variegated withwhite above; front of the neck and tip of the tail 
- fawn coloured; the belly chesnut. It is found perching along the 
margin of inundated places in Guiana, where it feeds on leaves and 
the seeds of a species of Arum. Its flesh smells strongly of castor, 
and is only employed as a bait for particular fishes. 
Pavo, Lin. 
The Peacocks are characterized by an aigrette or crest on the head, 
and by the coverts of the tail of the male being larger than its 
quills, and capable of being erected so as to form a circle. The 
shining, lax and silky barbs of these feathers, and the ocellated spots 
that decorate their extremities, are well known in the 
P. cristatus, L.; Paon domestique, Enl. 433 and 434. (The 
(1) N.B. The fig. in the PI. Enl. is bad, in as much as it represents the tail 
pointed. 
(2) This term was applied to the above bird by Buffon, without any proof, from 
an indication of Hernandéz, Mex. 320, ch. 10. 
Vieill. Galer., 193, calls it Sasa cristata, and improperly represents the beak as 
notched near its commissure. It forms a genus very distinct from that of any other 
of the Gallinacez, and when its anatomy is known, may become the type ofa par- 
ticular family. 
