212 Mr. J. H. Gurney's Notes on 
Wing. 
Tarsus. 
From Labrador, in Norwich Museum .... 
25-4 
3-8 
From Scotland, measured by Macgillivray* 
26-5 
4-5 
From Scotland, in the Norwich Museum. . 
27-0 
4-0 
From Lapland, in the Norwich Museum . . 
From south of France, measured by Mr. 
26-0 
3-10 
Humef. 
From Algeria, in the collection of Mr. J. 
27-63 
4-38 
H. Gurney, Jun. 
25-2 
40 
From Greece, in Norwich Museum. 
From the Himalayas, in the Norwich Mu¬ 
25-6 
3-9 
seum . 
From Hazara district of the Punjab, pre¬ 
sented by Captain Unwin to the British 
27-8 
4-0 
Museum, and measured by Mr. Sharpe .. 
27-9 
4-0 
Messrs. Baird, Brewer, and Ridgway, in their work on the 
land-birds of North America, from which I have quoted 
some of the measurements just given, state that the American 
Golden Eagle, as compared with that of the Old World, “is 
darker in all its shades of colour, the difference being most 
marked in the young plumage, which, in var. chrysaetus, has 
the tarsal-feathers nearly white, and in var. canadensis light 
brown, the brown of other portions being also considerably 
darker •” Mr. Sharpe, on the contrary, remarks te I cannot 
separate A. canadensis , the old birds of which appear to be 
undistinguishable; the young ones from America wear a pe¬ 
culiarly light plumage on the head and neck.” 
To me it appears that the only difference between the 
Golden Eagles of the Old and New Worlds which at all ap¬ 
proximates to a constant distinction, is that in the colour of 
the tarsi in young birds; and even this does not seem to be 
regulated by an invariable rule. The immature male from 
Texas in the Norwich Museum, of which I have given the 
measurements above, and the locality for which rests on the 
testimony of the late Jules Yerreaux, has the tarsi and the 
* Vide Macgillivray’s ‘ British Birds,’ vol. iii. p. 207. 
t Vide Hume’s ‘Rough Notes,’ p. 141. 
