331 Mr. H. Seebohm on the Ornithology of Siberia. 
centres) extending round the neck, below the black head, 
across the shoulders, above the wings, and crossing the breast 
below the black throat. 
Nos. 139 and 140 are nearly thoroughbred Carrion-Crows : 
but they show a little grey on each side of the neck, between 
the head and shoulders. 
These hybrids average 13-2 inches in length of wing from 
carpal joint, varying from 12:3 to 13°8. ‘The exposed por- 
tion of the first primary varies in length from 4°2 to 4°8 
inches ; and the distance from the end of the first primary to 
the end of the second primary averages 3°3, varying from 
3'1 to 3°6. 
My Yen-e-say’ Carrion-Crows average 13°3 in length of 
wing from the carpal joint, varying from 12-7 to 14 inches. 
The exposed portion of the first primary varies in length from 
4:3 t05°2; and the distance from the end of the first primary 
to the end of the second primary averages 3°4, varying from 
3 to 39. 
Corvus corong, Linn. 
I was disappointed not to find any bird which I could iden- 
tify with any of the eastern forms of this species, such as C. 
orientalis or C. japonensis. Both C. corone and C. cornix 
appear to winter south of lat. 60°. When we arrived at the 
Arctic circle we were surprised to find a pair of black Crows 
frequenting the banks of the Koo-ray’-i-ka. The sailors 
called them Ravens, and assured me that they had wintered 
near the ship. I succeeded in shooting the male; but, with 
the exception that he is slightly larger than any other Car- 
rion-Crow which I shot, I cannot find any point of difference. 
He measures 14 inches in length of wmg. ‘The exposed por- 
tion of the bastard primary is 4°5; and the distance from the 
end of the first primary to the end of the second primary is 
3-9. The end of the bastard primary falls considerably short 
of the end of the innermost secondaries. 
After leaving the Arctic circle both this and the preceding 
species rapidly became rarer. We saw the last Hooded Crow 
in lat. 69°, and the last Carrion-Crow in 694°, about the limit 
of forest-growth. 
[22] 
