Allen’s naturalist’s library. 
152 
Range outside the British Islands. — A North American species, 
found in the eastern portion of that continent, and westwards 
to the border of the Great Plains, according to Mr. Ridgway 
(Man. N. Amer. B. p. 232) occurring south in Eastern Mexico, 
and perhaps extending to Panama. 
IV. THE red-shouldered BUZZARD. BUTEO LINEATUS. 
Falco Htieatus, Gmelin, Syst. Nat. i. p. 274 (1788); Sharpe, 
Cat. R. Brit. Mus. i. p. 191 (1874); Newton, cd. Yarn 
Brit. B. i. p. 113 (1871); B. O. U. List Br. B. p. 04 
(1883). 
Adult Male. — Easily distinguished by the colour of the lesser 
wing-coverts, which are conspicuously margined with rufous, so 
as to form a shoulder-patch ; the quills distinctly spotted with 
white on their outer webs ; the tail with from four to six alter- 
nate bars of black and white ; cere yellow bill bluish-black ; 
feet yellow ; claws black ; iris bright amber. Total length, 2 1 
inthes; culmen, 1-4; wing, 13-2; tail, 8-5 ; tarsus, 3-1. 
Range in Great Britain.— A specimen of this Buzzard is said 
to have been obtained in Inverness-shire in 1863, but, as the 
Committee of the British Ornithologists’ Union remark, the. 
record is probably the mistake of a dealer. 
Range outside tlie British Islands. — A North American species 
occurring northn-ard to Nova Scotia, and westw'ard to the edge 
of the Great Plains. 
THE EAGLES. SUB-FAMILY AQUILINAi:. 
The chief distinguishing character of the Eagles is the reti- 
culation of the hinder aspect of the tarsus. This is very often 
hidden by feathers, but traces of the network of the scales 
can generally be found on parting the feathering of the back 
of the tarsus. The species of Eagles are numerous, and they 
are distributed nearly over the entire globe ; in fact, there is no 
portion of the Old World in which a Sea-Eagle of some kind 
does not occur. There is great variety in size among the 
members of the Sub-family, some being large and powerful, 
while others arc little bigger than Sparrow-Hawks, and yet be- 
