Mr. H. Seebohm on the Ornithology of Siberia. 331 



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 ]2'7 to 14 inches. 

 The exposed portion of the first primary varies in length from 

 4*3 to 5*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 3-9. 



CORVUS CORONE, 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. comix 

 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'-Uka. 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 wing. 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 69i, about the limit 

 of forest-growth. 



