WHITE-BROWED YELLOW-THROATED WARBLER, 261 
lids and infraocular crescent white Osher under parts and two bars on wings white, 
sides streaked with black. Bill (from nostri!) 35, tarsus 60, wing 2.70, tail 2.20. 
The above description is Mr. Ridgway’s. Var. dominica differs from albilora in having 
the “superciliary stripe an‘erior to the bill wholly bright yellow, vellow of chin and 
maxilla extending to the bill,” and in the following measurements: bill (from nostril) 
.45, wing 2.60, tail 2. ; / 
Habitat, var. albilora, in summer, Mississippi region of United States, north to Lake 
Erie, aud Detroit, Michigan; in winter, Mexico, Guatemala, Yucatan and Colima. 
Var. dominica, Atlantic United States north to Washington, D.C. Connecticut. Massa- 
chusetts. West Indies. 
I apprehend that few of our specimens of var. albilora will be found to 
correspond exactly in coloration with the type described by Mr. Ridg- 
way. Ihave never seen a spring specimen which had no trace of yellow 
in the loral line. Some are entirely white on one side, but have yellow 
‘on the other. Usually the middle of the loral line on both sides is yellow. 
The same remarks apply to the white bordering the maxille. Some 
young birds in August and September show the loral line entirely white 
on both sides. On the other hand, the presence of some white in the 
loral line of all our specimens, and the measurements, readily distin- 
guish them from typical dominica 
Not rare summer resident; common during the spring migration. This 
is the first of the family toarrive in spring. It is alwys to be seen be- 
fore the Yellow-rumped and Yellow Warblers make their appearance, 
sometimes before the last snow and ice. I have seen them in consider- 
able numbers on the 13th of April, and have known of its occurrence as 
early as April 9th. When on their migrations they confine themselves 
almost exclusively to the trees which skirt the streams, and move north- 
ward by day with considerable rapidity. During the whole day their 
characteristic song, tswee-a, tswee-a, tswee a, tswee, tswee, tswee, tu-wee, may be 
heard, sometimes at a’ distance of a quarter of a mile, as the birds feed 
in the sycamore and elm trees. At such times their capture is a matter 
of some difficulty, as they spend most of their time in the topmost branches 
of the tall syeamores or far out over the water. They seem to delight in 
baffling pursuit by flying from one clumpof trees to another on the opposite 
side of the stream. For this reason, the better plan isto wait for them in 
-some sycamore grove or under a budding elm. They are seldom seen in 
woodland, though they not unfrequently visit the shade trees and gardens 
of the city. They are much more abundant during the spring migration 
than at any other time. In this locality it is not uncommon to see a 
dozen in a morning’s walk, about one third of which may be captured. 
I have had no opportunity of observing the bird elsewhere except at Co- 
shocton, where the Walhonding and Tuscarawas Rivers unite to form the 
