AVES. 
2 42 
united by membranes ; wings with two retrousse spurs, one on 
the flexure, and the other on the axilla. 
Chauna chav aria. — The Faithful Jacana. 
Plate LXVIII. fig-. 3. 
The whole upper and under parts grayish-white ; middle wing- 
coverts dark purplish-gray; the larger coverts, secondaries, and 
upper quills, umber-brown; the external quills gray; throat 
with a broad belt round its centre •, tail dark-gray, central feather 
brown ; head furnished with a double crest, feathers situated in the 
sinciput pendulous; ophthalmic region orange ; irides orange- 
yellow ; bill yellow ; legs pale rose-colour. About thirty inches 
long. Inhabits America. 
ORDER XII.—CURSORES. 
Bill of medium size, or short in some species ; legs long, 
naked above the knee ; and with two or three anterior toes only. 
Genus 1. — S TRUTH 10.— Linnaeus. 
Generic Character .—Bill straight, obtuse, depressed at the 
point, which is somewhat rounded and angulated; mandibles of 
equal length, flexible, and gape very wide ; nostrils longitudinal, 
situated near the middle of the bill; legs very long, strong, and 
muscular, entirely divested of feathers : feet with two toes di¬ 
rected forward, connected by a strong membrane at their base, 
the exterior being much shorter than the interior one, the latter 
only being furnished with a strong, obtuse, hoof-like claw; the 
tibia very fleshy to the knee-joint; the tarsus with large scales 
on the front, and reticulated behind, with a distinctly developed 
heel; wing short, unsuited for flight, composed of long, flexible 
plumes, divested of cohesion between their barbs, and having a 
double spur on the axilla. 
Struthio camelus —African Ostrich. 
Plate LVI. fig-. 7. 
Black; plumes of wings and tail black, gray, and white; head 
small; neck very long, the upper half covered with thin down, 
