Birds. 287 
Buteo desertorum. Bill and cere yellow; eyes red; head, 
neck, back, and belly, ferruginous red ; the latter with dashes 
of black; throat, breast, and under tail coverts greyish white. 
Primary quill feathers black. Tail ferruginous red above ; 
greyish white with indistinct transverse bands, beneath. Legs 
and toes yellow. claws black. Smaller than Buteo Jackal. 
Inhabits South Africa,-—rare. 
Falco desertorum, Daud. Shaw, Lath. Le Rougri, Le Vaill. 
Ois. d Afrig. pl. 17. 
Genus Burartss. Lesson. 
Bill slender, arched from the base ; nostrils oblique ; wings 
nearly as long as the tail, fourth feather the longest; tarsi 
feathered to the toes. 
Butaetus buteo, Lesson. Over each eye a narrow black 
stripe ; head, neck, breast, anterior part of belly, and legs, 
white, with longitudinal brown stripes, largest on the sides of 
breast and belly; interscapulars, scapulars, and shoulders, 
brown, margined with rufous or white; back nearly an uniform 
brown ; upper tail coverts white, dashed with brown ; centre of 
belly and flanks dark brown, variegated with rufous or tawny 
white; hinder portion of belly and under tail coverts an uniform 
dull white. Primary wing feathers brown, both vanes towards 
quills white; secondaries brown, inner vanes white towards 
quills ; all the feathers obscurely tipt with dusky white. Tail 
white towards base, grey-brown towards extremity, with an in- 
distinct dark band immediately behind the tip, which is dull 
white. Bill dark horn-colour ; the base of lower mandible, 
cere, and toes, yellow ; claws black. 
Inhabits South Africa and Europe. 
Falco lagopus, Gmel. Buse Gantée, Le Vaill. Ois. d’ Afrig. 
pl. 18. 
Butaetes Lessonii, Smith. Above brown, the shoulder 
feathers margined with brown-white; ears and space behind 
base of lower mandible brown-black ; under parts white; the 
breast and anterior part of belly streaked with brown-black. 
Primary wing feathers black-brown, the inner vanes towards 
quills white, secondaries with blackish transverse bands on 
inner vanes, and all tipt with white ; inside of shoulders white, 
spotted with black. ‘Tail nearly even, the feathers black- 
brown, variegated with narrow waved irregular bars of a darker 
tint, and all tipt with obscure white. Bill bluish black ; cere 
and toes yellow. Length eighteen inches. 
Young.—Cere and toes greenish yellow; head and back of 
neck light brown, feathers margined with rufous ; interscapu- 
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