9 Mr. H. Seebohm on the Ornithology of Siberia. 
loochistan the second primary is shorter than the seventh, 
_ but longer than the eighth. More evidence must, I think, 
be collected before we admit S. affinis even to be a satisfac- 
tory subspecies. 
PuHyLLoscoPus BOREALIS (Blasius). 
A fortnight after the arrival of Phylloscopus trochilus, P. 
tristis, and P. superciliosus I had given up P. borealis in 
despair, when suddenly it arrived in great numbers, and be- 
came the commonest of the four species. The song is almost 
exactly like the trill of the Redpole, but not quite so rapid, 
and alittle more melodious. Its call-note is generally a single 
monotonous dzit, but sometimes made into a double note by 
dwelling on the first part, d—z, zit. It is less restless than 
the other Willow-Warblers, by no means shy, and is easy to 
shoot. When I left the Arctic circle it had probably not 
commenced to breed; but on the 6th of July I had the good 
fortune to shoot a bird from its nest at Egaska, in lat. 67°. 
The eggs are larger than those of our Willow- Warbler’s, pure 
white, and profusely spotted all over with very small and very 
pale pink spots. They -were five in number. The nest was 
built on the ground in a wood thinly scattered with trees, 
and was placed in a recess on the side of a tussock or little 
mound of grass and other plants. It was semidomed, the 
outside being composed of moss, and the inside of fine dry 
grass. There was neither feather nor hair used in the con- 
struction. I did not see this bird further north than lat. 69°. 
PHYLLOSCOPUS TROCHILUS (Linn.). 
“ Sylvia icterina, Vieill.”, Eversm. (nec Vieill.), Add. ad 
Pall. Zoogr. Rosso-As. fase. 11. p. 14 (1842). 
Phyllopneuste eversmani, Bp. Consp. Gen. Avium, p. 289 
(1850). 
It was with very great pleasure that I heard the familiar 
song of this European bird on the 4th of June on the Arctic 
circle, in the valley of the Yen-e-say’, so much further east 
than it has hitherto been recorded. I afterwards found it 
common extending as far northwards as lat. 70°. As this bird 
has never been found in India, it would seem probable that 
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