242 U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT, 
shorter than the middle ones. The fourth quill is longest ; the first shorter than the fifth. 
The legs are long and of a yellow color. 
I have not found any specimens of this species agreeing with the Trichas personatus of Swainson 
as distinguished from his 7. brachydactylus. All before me have the short lateral toes dis- 
tinguishing the latter species. Should, therefore, there be really two, as suggested by Swainson, 
the new one will be that to which he has assigned the name of personatus. 
Among the specimens before me are several males in autumnal or winter dress in which the 
entire crown is pale reddish olive, except a very narrow black frontlet. The black of the cheeks 
is also considerably obscured. This agrees with the Sylvia roscoe of Audubon. There isa 
slight trace only of the conspicuous white ring round the eye, shown in the figure of roscoe, 
this is characteristic of the female ; nor is the olive of the back so dark. 
Specimens from the west appear larger than eastern ones, and the hoary suffusion back of 
the black on the head is more sharply defined and whiter. One skin from Racine has the 
belly yellower than usual, and thus more like G. velatus. 
This species is readily distinguishable from G. macgillivrayi and philadelphia in the adult 
dress. The female and immature specimens of the latter may be distinguished by the bright 
yellow of the whole under surface of body and tail coverts, and the gray tinge on the neck and 
throat without the decided yellow of G. trichas. 
List of specimens. 
Catal. Sex and Locality. When col- | Whence obtained. | Orig’!| Collected by— Length. | Streteh | Wing. Remarks. 
No. | age. | | lected. | No. of wings.| 
mania). eS eee 
2178 | GO | Carlisle, Pa...........-| April 30, 1845 | §. F. Baird........ 
2528) |) Sd beeeoet Chnoosens seseeee | May 20, 1845 |...... osc 
252) ¢ wedOisseasscesecset |May 4, 1846 |...... do. 
2655 | oO +1dO..seessscooesres | May 12, 1846 |......dO..seeseeeee 
2535 a sclilssesoonnbade ee+s| April 30, 1846 |...... dOssesseiesie’s 
2215 3 sisdOvcicrevicccecccee: April 3, 1846 |...... do. 
385 | Q Ov cicecaccncccecss April 15, 1846 |......do 
SMS" <Q |teeese dosstevtn cevercces May 21, 1845 
U105/]/ ©) |-cenee doxieseasseenak July 5, 1843 
Ww3)  g | Washington, D.C..... April 25, 1842 
2655 |.....,,.| Cape Florida....... | @. Wurdemann.... 
7370 |... ,,.| Cleveland, Ohio... ; .-| Dr. J. B. Kirtland .. 
7922 | ree | Racine, Wis. ..+..ceoe- | A. C. Barry...... 
5825 ret Joe cce sre cccccscrseves Dr. P. R. Hoy..... 
10152 | al West Northfield, [ll..... | May 15, 1857 R. Kennicott....... Retealeist= 
8313 3 Independence, Mo..... | May 27, 1857) Wim. M. Magraw.. 30 | Dr. Cooper....| 5.00 6.37 2.12 | Iris brown; bill black; 
| | feet flesh color. 
ooUEs| Fn ee oy | Blackfoot country...... 
8227 o Fort Laramie, Neb..... Sept. 17, 1855 Iris brown; feet pale 
| brown. 
Fort Steilacoom........ April 25, 1856 
poses Use cucscceciccesiee April 26, 1856 
| Shoalwater bay........ Aug. 30, 1854 
Fisinoos GO. sais clots oisteiniaioia's 
San José, al . 
7520! G | Tulare valloy.......0- R. 8. Williamson... 
Fort Tejon, Cal J. Xantus de Vesey 
