266 
AVES. 
red at the base, dusky at the tip; legs and feet black. Twenty- 
one inches long. Inhabits Europe. 
ORDER XV.—PALMIPEDES. 
Bills much varied in form ; legs short, generally placed far 
back; anterior toes wholly or partially connected by webs, and 
in some of the families the whole four are united by one mem¬ 
brane ; the hallux articulated to the tarsus on the interior side ; 
some genera are devoid of a hallux. 
Genus 1. — CEREOPSJS.— Latham. 
Generic Character. —Bill very short, robust, its depth at the 
base being nearly equal to its length, covered by a cere, which 
extends over two-thirds of the upper mandible, which is arcu¬ 
ated, and bent over the under one, and somewhat truncated ; 
nostrils very large, open, placed in the middle of the bill; the 
cere extending upwards, over the forehead, nearly to the crown ; 
tibia very short; tarsus longer than the middle toe; three ante¬ 
rior toes palmated by deeply serrated membranes ; hallux short, 
placed high on the tarsus ; claws short, strong, slightly bent; 
wings furnished with an obtuse spur. 
Cereopsis Novce Hollandice. — The New Holland Cereopsis. 
Plate LX. fig. 7. 
Ash-gray ; scapulars with wedge-shaped black spots ; tail and 
quills black; cere yellow; irides red; venter blue; bill and 
feet gray; legs orange. Two and a half feet long. Inhabits 
New Holland. 
Genus 2. — CHIONIS.— Forster. 
Generic Character .—Bill strong, straight, hard; convex, com¬ 
pressed, sloping towards the point; base of the upper mandi¬ 
ble sharp at tip and more than half covered by a moveable 
horny sheath, furrowed longitudinally; nostrils small, situated 
near the margin and partly covered by the sheath ; cheeks naked, 
covered by a warty skin ; legs short; tarsus not so long as the 
