186 
U. 8. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
List of specimens. 
Catal. 
No. 
Sex and 
age. 
Locality. 
Wlien col¬ 
lected. 
Whence obtained. 
Orig. 
No. 
Collected by— 
Length. 
Stretch 
of wings. 
Wing. 
Remarks. 
1857 
$ 
1843. 
S. F. Baird. 
1904 
O 9 
July 18, 1843 
5268 
5267 
Q 
Sept. 11, 1856 
7.00 
12.00 
4.00 
5269 
9 
Sept. 26,1856 
7.00 
12.50 
4.25 
6893 
7.50 
13.25 
4.12 
8775 
Wm. M. Magravv .. 
148 
7.50 
13.25 
4.75 
feet black. 
8782 
Aug. 14, 1857 
155 
5635 
Q 
July 24, 1857 
147 
W. S. Wood. 
7.50 
11.25 
8894 
Q 
July 16, 1857 
7.00 
12.50 
4.00 
6969 
s 
Black hills, N. T. 
July 21, 1857 
308 
W. S. Wood.... 
7229 
7230 
7228 
Feb. 10, 1854 
88 
7.00 
11.00 
4.00 
7233 
Feb.16,1854 
170 
7.00 
13.00 
5.00 
5510 
s 
Petaluma, Cal. 
56 
7225 
7226 
$ 
7227 
3 
4602 
Dec-, 1854 
18 
3721 
4904 
7.75 
13.12 
4.25 
4905 
7.50 
13.37 
4.25 
7231 
3 
Mar. —, 1855 
55 
Dr. Kennerly .... 
7.00 
12.50 
4.00 
Eyes dark chocolate.. 
9103 
Mexico. 
17416 
CONTOPUS, Cab an is. 
Contopus, Cabanis, Journal fur Ornithologie, III, Nov. 1855, 479. (Type Muscicapa virens, L.) 
Tarsus very short, but stout ; less than the middle toe and scarcely longer than the hinder. Bill quite broad at the base ; 
wider than half the culmen. Tail moderately forked, much shorter than the wings, (rather more than three-fourths.) Wings 
very long and much pointed, reaching beyond the middle of the tail ; the first primary about equal to the fourth. All the 
primaries slender and rather acute, but not attenuated. Head moderately crested. Color, olive above, pale yellowish beneath, 
with a darker patch on the sides of the breast. Under tail coverts streaked. ' 
This genus is pre-eminently characterized among North American flycatchers by the very 
short tarsi, and the long and much pointed wings. The species are as follows : 
Length, 7.50 inches ; wing, 4.40. A concealed silky white tuft on each side of the rump. 
No white around the eye or on the wing coverts. C. borealis. 
Length, about 0 inches; wing, 3.50. Outer primary edged with whitish. The olive on 
the sides of breast paler than on the back, less extended, and separated along the median 
line. C. virens. 
Length, about 6.25 inches ; wing, 3.65. Outer primary without white edge. Breast olive 
brown, scarcely paler than the back, not divided in the middle line. C. richardsonii. 
