AYES. 
235 
Crux ulector. — The Crested Curassow. 
Plate LVI. fig. 2. 
Deep iridescent black, reflecting green upon the head, crest, 
neck, back, wings, and upper part of the tail; abdomen and 
crissum dull white ; crest three inches long, occupying the 
whole upper surface of the head; ophthalmic region naked, yel¬ 
low towards the bill. Size of a turkey. Inhabits Mexico. 
Genus 11. — PENELOPE.— Linnaeus. 
Generic Character .—Bill medium size, broader than deep, 
compressed, and arcuated at tip; nostrils lateral, half covered 
by a membrane, and open in front; cheeks naked ; a longitudi¬ 
nal wattle beneath the bill, extending down the throat, capable 
of being inflated or depressed at will, carunculated in the mid¬ 
dle ; tarsus long, reticulated; anterior toes strong, united by 
membranes; hallux parallel with the toes ; wings short, the 
sixth quill the longest. 
Penelope marail. — The Maraie. 
Plate LIV. fig. 6. 
Sinciput, neck, back, wings, rump, and tail, olive-green; 
breast darker green ; abdomen brown; each feather of the last 
two being margined with white; front, crown, sides of the 
neck, and bill, gray ; ophthalmic region, throat, and legs, scar¬ 
let; quills ferruginous; under tail feathers rich brown. Twen¬ 
ty-six inches long. Inhabits Guiana. 
Genus 12.—TETRAO.— Linnceus. 
Generic Character. —Bill short, robust, arcuated above, con¬ 
vex, and bent downwards at the tip, naked at the base ; nostrils 
basal, half closed by an arcuated scale above, and hidden by 
small feathers; tarsus clothed with feathers, which, in some 
species, extend the length of the claws; three toes before, unit¬ 
ed to the first joint; the hallux margined by asperities. 
Section 1.—With the tarsus only feathered; edges of the 
toes deeply bordered with a fringed margin. 
