566 AVE8. 



Genus 2.—CYFSELVS.—Illiger. 



Generic Character. — Bill very short, depressed, dilated at the base, and 

 triangular ; the gape extending beyond the posterior angle of the eye ; up- 

 per mandible deflected at the point ; nostrils cleft longitudinally, at the edge 

 of the ridge, open, with a prominent margin, beset with small feathers ; tar- 

 sus very short and thick ; four toes, all directed forward, entirely free, and 

 consisting of two phalanges each, strong, and armed with thick and hooked 

 claws ; tail consisting of ten feathers ; wings very long, the first quill being 

 somewhat longer than the second. 



Cypselus unicolor. — The One-Coloured Swift. Plate xxxviii. fig. 4. Dull 

 black, with greenish reflections ; throat paler ; wings forked and very long, 

 extending an inch and a quarter beyond the tail. Six inches and a quarter 

 long. Inliabits Madeira. 



Genus3.—CAFRIJ^V1,GVS.—Linna:us. 



Generic Character. — Bill a little curved, very small, depressed at the base 

 and surrounded in most species by long stiff tapering bristles ; upper man- 

 dible slightly bent at the tip ; gape very wide ; nostrils basal, tubular, co- 

 vered by a membrane, siu'mounted by hairs, and surrounded by an elevated 

 ring ; wings long, the first quill longer than the second ; tail round or fork. 

 ed, consisting of ten feathers ; legs short, feet small, toes adhering as far as 

 the first joint ; middle claw long, and serrated at the edge, but smooth in 

 some foreign species ; hallux reversible. 



Copri/nulgus EuropcEiis. — The European Goat-Sucker, or Night Jar. Plate 

 xxxviii. fig. 5. Described, vol. iii. p. S76. 



Genus 4.— POD ARGUS.— /Wi^en 



Generic Character. — Bill broader than the head, short and abruptly acu- 

 minated towards the point, which is considerably bent, surrounded by stiff 

 bristles ; upper mandible spatuliform and carinated ; nostrils linear, basal, 

 and hidden by the nuchal bristles ; wings shorter than the tail ; tarsus short, 

 strong ; toes separate ; claws nearly of equal length. 



Podargus cornutus. — The Horned Podargus. Plate xxxix*. fig. 4. Back and 

 wings reddish-brown, freckled with black ; scapulars covered with small 

 white spots ; head with a horizontal tuft of long irregular feathers rising 

 above the auricles ; bill surrounded by stiff' bristles ; throat white, with the 

 feathers forming a kind of smooth beard, nearly enveloping the lower man. 

 dible ; tail cuneiform, reddish-browu with waved lines. Nine inches long- 

 Inhabits Java. 



ORDER IX.— COLUMB^. 



Bill of medium size, compressed; the base of the upper mandible covered 

 by a soft skin in which the nostrils are situated ; the point more or less 

 bent ; feet with three completely divided toes before, and one behind. 



Genus 1. — COLUMBA. — Linmeiis. 

 Generic Character.— BiW of medium size, compressed, curved at the tips 



