1909] The 1907 Alexander Alaska Expedition. 227 
Eight examples of the pine siskin were secured, one from 
Chichagof Island (No. 287), and the remainder from Admiralty 
Island (Nos. 291-297). They are all in full adult plumage and 
are quite uniform in the matter of both coloration and size. I 
can discern no difference between these and the average of series 
from the mountains of southern California, the Rocky Mountains 
of Colorado, and the northeastern United States. The pine 
siskin must be either remarkably resistant to local ecological 
influences, or it must wander over large areas, adoptine new 
breeding places so often as to prevent the fixation of adaptive 
characters under any one set of factors. The latter is probably 
the more nearly true explanation; for the species is wont to ap- 
pear suddenly in a locality where never before known and breed 
in numbers. 
Passerculus sandwichensis sandwichensis (Gmelin). 
Sandwich Sparrow. 
Two male sparrows (Nos. 401-402) taken at Windfall Har- 
bor, Admiralty Island, May 5 and 9, are plainly referable to this 
form. They were evidently transients on their way northwest- 
ward. 
Passerculus sandwichensis savanna (Wilson). 
Savanna Sparrow. 
The eight savanna sparrows secured (Nos. 403-406 from Ad- 
miralty Island, Nos. 384 and 385 from Baranof Island, No. 392 
from Chichagof Island, and No. 277 from Glacier Bay) are puz- 
zling in the extreme. In the matter of size they are intermediate 
between alaudinus and sandwichensis, nearest the former. But 
in general coloration they are dark, duplicating the eastern 
savanna in yellowness of the eyebrows, general brownness, and 
more extensive black streaking dorsally. From savanna the series 
is distinguishable only in a shehtly greater size, but individual 
variation renders this difference inconstant. Hence I adopt the 
name savanna for the race breeding in the Sitkan District, al- 
though doubtless separated geographically from the ranee of 
typical savanna by that of alaudinus. 
The savanna sparrow, according to Stephens, became rather 
common at Windfall Harbor, Admiralty Island, after May 1. 
