244 
AVES. 
webbed plumes of a hairy texture; tibia serrated behind. 
Seven feet high. Inhabits New Holland. 
Genus 4.—CASUARIUS.— Brisson. 
Generic Character .—Bill straight, of medium length, narrow, 
compressed, with a keeled ridge; crown and front surmounted 
by an upright, sub-conic, bony crest, somewhat bent towards 
the point, the tip turned down ; lower mandible soft, flexible, 
and angular near the point; nostrils round, situated in the lateral 
part, near the point of the bill; legs robust, muscular; tibia 
naked a little way above the knee; tarsus reticulated, with a 
heel at base not much developed; feet with three anterior toes, 
furnished with strong, smooth, conical nails ; intermediate toe 
longest, external and internal toes nearly of equal length ; wings 
short, not fitted for flight; the remiges resembling the barbs of 
feathers. 
Casuarius galeatus. — Galeated Cassowary. 
Plate LVIII. fig. 1. 
Black; webs of the feathers resembling hair; crest yellow 
horn-coloured ; cheeks and throat purple, changing on the crown 
and nape to scarlet; caruncle on each side of the neck scarlet; 
legs and feet gray. Five feet and a half long. Inhabits India. 
Genus 5. — O TIS.— Linnaeus. 
Generic Character. —Bill of medium length, nearly straight, 
compressed; point of upper mandible slightly arcuated; nos¬ 
trils lateral, oval, open, and removed from the base; legs long, 
naked above the knee; tarsus reticulated; feet with three ante¬ 
rior toes only, united at the base, and bordered by membranes ; 
wings of medium length ; the third quill longest. 
Otis tarda. — The Great Bustard. 
Plate LVIII. fig. 3. 
General colour of the plumage white ; the upper parts barred 
and mottled with buff-orange and cream-yellow; breast and 
sides with transverse reddish buff-coloured bars ; middle of ab¬ 
domen and crissum white ; from the base of the under mandible 
there is a kind of beard or mustache of long pendulous wiry 
feathers ; head and nape blue-gray; a streak of black from the 
