326 
U. S. P. R. R EXP, AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
the latter with the lateral feathers broadly tipped with white ; hut this color restricted at the base. A continuous black stripe 
from the bill through and behind the eye. Length, 9.00 ; wing, 3.90 ; tail, 4.20. 
Ilab .—South Atlantic and Gulf States. 
No, 3054 is above rather dark slate blue, almost or quite inappreciably lighter on the rump 
the outer scapulars shading behind into whitish on their outer webs. Beneath clear white, 
purest on the throat; the sides of the body almost to the median line tinged with bluish ash, 
much lighter than the back ; the feathers of the breast with the most obsoletely possible indi¬ 
cations of narrow transverse bars. The wings and tail are black ; the primaries all white at 
the base, forming a conspicuous patch ; the secondaries and tertials tipped with the same. 
The outer four tail feathers tipped with white, (the first for an inch ;) this color extending 
along the outer web, most so in the outer, where it occupies it almost entirely. The forehead is 
inappreciably lighter than the crown, which, however, is bordered laterally from the bill to 
above the eye with whitish. The side of the head, including the border of the upper jaw, the 
lores, region round the eye, and the ear coverts behind it, black. Axillaries dark plumbeous. 
There is some difference in specimens as to the color of the scapulars. Occasionally these 
are whiter than as described, forming a conspicuous band along the black of the wing, almost 
from the bend. The upper tail coverts are sometimes of a slightly paler ash than the hack, 
but never whitish ; the difference always very slight. There is frequently no trace whatever 
of bars on the breast. The axillaries, too, are sometimes for the most part white, sometimes 
dark ash. 
The female is of duller plumage than the male. The young is lighter gray above than the 
adult; more or less tinged with brown; all the feathers waved obscurely and finely with dusky. 
The under parts are white, waved obscurely with dusky on the breast and sides. 
The unbanded white color beneath, and the continuous black stripe through the eye, as well 
as the smaller size, distinguish this species from the Northern Shrike, ( C. borealis.) 
List of specimens. 
Catal. 
No. 
Sex and 
age. 
Locality. 
When collected. 
Whence obtained. 
Collected by— 
Length. 
Stretch 
of wings. 
Wing. 
3053 
o 
Georgia_ 
1840. 
S. F. Baird ....... 
W. L. Jones_ 
8. 00 
11. 50 
3. 70 
2420 
o 
Savannah, Ga_ 
_do_. 
1845. 
_do_ 
8.80 
12.50 
3.80 
2419 
1845. 
3050 
Q 
Liberty county, Ga. 
1846. 
_do_ 
Jos. L. Leconte_ 
8.83 
12. 00 
3. 75 
3054 
1846. 
