GEOTHLYPIS. 
Geothiypis macgillivrayi. 
Sylvia macgillivrayi, Aup. Orn. Biog. V, 1839, 75, pl. 399.—Trichas 
macg. AuD.—Geothlypis macg. Batrp, Birds N, Am. 1858, 244, pl. 
Ixxix, fig. 4.—Scnarer, Catal. 1861, 27 (Jalapa and Guat.).—Is. 
P. Z. 8. 1859, 363, 373 (Xalapa, Oaxaca).—Cas. Jour. 1861, 84 
(Costa Rica).—Coorrr & Suckuey, P. R. R. Rep. XI, n, 1859, 177. 
—Sylvicola macg. Max. Cab. Jour. VI, 1858, 118. 
Sylvia tolmiwi, Towns. J. A. N. Sc. 1839.—Trichas tolmivi, Nurr. Man. I. 
Trichas vegeta (Licut.), Be. Consp. 1850, 310; jide Cab. Jour. 1861, 84 
(Mexico). 
227 
Hab. Western and middle provinces of United States to northern boundary ; 
south to Costa Rica. 
Smith- ICollece| Sex When 
sonian| tor’s | and Locality. Gollected Received from Collected by 
No. No. | Age. : 
= = ee | a | a 
7,905 | 396 | .. | Ft. Steilacoom,W.T.| May 3, ’56. | Dr. Suckley. | Dr. Suckley. 
USS tae dg | Columbia River. May, 1835. 8. F. Baird. J. K. Townsend. 
15,945 321 | ¢ | Chiloweyuck Depot| June 20. A. Campbell. Dr. Kennerly. 
25,373 681 | .. | Fort Tejon, Cal. Sept. 1857. John Xantus. John Xantus. 
10,944 3 od | Fort Bridger. June 10. C. Drexler. C. Drexler. 
10;954 | .-.. -. | Fort Laramie. Aug. 31. W. M. Magraw. | Dr. Cooper. 
32,178 | 2,486 | .. | Cape St. Lucas. Dec. 16, °59.| John Xantus. John Xantus. 
32,466, | 45) 9 | Orizaba, Mex. ne Prof. Sumichrast. | Prof. Sumichrast. 
32,704 /40,772 & | Mexico. sate TVOTT OTEK gibi inlet [He va ine Ayers es 
30,675 | 4,612 | 2 | Coban, Guat. INKS USB Nl On ENN ey NO Seb eae 
30,674 201 | ¢& | Duenas, Guat. Jan. 31, 58. ek EBVO RT ral Wri 2 
| 
(1,910.) Type of species. 
(32,178.) Iris dark brown. 
Geothiypis 
(No. 30,676.) Among some specimens from Guatemala, presented 
by Mr. Salvin to the Smithsonian Institution, is one labelled @eo- 
thlypis macgillivrayi ; which, however, by no means belongs to it, 
and is of a species quite unknown to me. In form it is intermediate 
between Geothlypis and Oporornis—having a pointed wing, a little 
longer than tail; the 3d quill longest, the 2d a little longer than 
the 4th, the 1st about equal to it. The under tail coverts are as in 
Oporornis, reaching nearly to the end of the tail. The legs are also 
as in Oporornis. The upper parts are olive green, brightest towards 
the tail; the head above tinged with brown. The whole under parts 
are yellow, less vivid on the throat, and tinged with ashy across the 
breast. An obscure line from bill to eye, and the eyelids are 
yellowish-white ; a dusky spot before the eye. Bill horn color. 
Legs yellow. It resembles the female G. trichas in the yellowish 
throat, but the wings are longer and more pointed, ete. Length, 
5.00; wing, 2.40; tail, 2.25; tarsus, .83; middle toe and claw, .67. 
The wings are much too short for either O. agilis or formosus, 
though otherwise similar in form. 
