12 
any other Buzzard’s eggs, even than those of ‘Sancti 
Johannis,’ to which in marking they are very similar, 
the marks being small and thin. An average egg of 
Desertorum from my clutch is 2.30 by 1.71. They were 
taken at Sarepta, May Io, 1883. 
THE AMERICAN ROUGH-LEGGED HAWK. 
( ARCHIBUTEO LAGoPpuUS SANCTI JOHANNIS.) 
Rejected from the B.O.U. List. 
Unnoticed by Newton. 
Unnoticed by Seebohm. 
The B.O.U. List states that the Devonshire occurence 
‘proved to be merely a dark variety of Archibuteo 
Lagopus.” 
The bird ranges throughout the whole American 
Continent; but during the breeding season retires to the 
more northern parts. Brewer states that he was told it 
was then common on the Labrador coast. Davie states 
that it breeds both on trees and rocks, and that the eggs 
are 2.10 by 1.74inches. The drawing given by Brewer is 
22, by 142 inches; and he says that it approaches in size 
and appearance to an egg of B. Lagopus from Switzerland, 
measuring 27% by 143—here is considerable difference in 
size. A clutch of three in my possession, taken at Okkak, 
Labrador, June 17, 1883, are not in the least like my 
eggs of the European Rough-Legged Buzzard, taken in 
Lapland, May 30, 1858, and June 16, 1864, but are very 
distinct; they appear considerably smaller, and two of 
them are, for Buzzard’s eggs, slightly pyriform ; they are 
also bluer in the ground colour, and more weakly marked, 
like eggs of ‘Desertorum’; they average 2.16 by 1.71 
inches. My eggs of Lagopus average 2.28 by 1.83. 
