Mr. H. Seebohm on the Ornithology of Siberia. 352 
MoraciLLa viripis, Gmel. 
The Grey-headed Wagtail arrived in flocks on the Arctic 
circle on the 5th of June, and soon became extremely abun- 
dant. It does not seem to extend its range beyond the limit 
of forest-growth, and disappeared about lat. 69°. 
Motacina CITREOLA, Pall. 
This beautiful bird was the first of the yellow Wagtails to 
arrive at our winter-quarters. I secured the first example on 
the 4th of June, and afterwards found it very abundant on 
the tundra as far north as we went. 
MotacI“ia MELANOPE (Pall.). 
One solitary example of the Grey Wagtail fell to my gun 
on the 6th of June. As this is the first time that this bird 
has occurred within the Arctic circle, so far as I am aware, 
it may be looked upon as an accidental occurrence. I may re- 
mark that my bird, with a tail measuring 3°75 inches, is inter- 
mediate in form between the eastern and western yarieties, 
[43] 
