226 



KEVIEW OF AMERICAN BIEDS. 



[part I. 



from Bogtril, .35 ; greatest depth, .185 ; tarsus, .91 ; middle toe and claw, .80 ; 

 hind toe and claw, .60. 



The species above described, if its characters are maintained 

 throughout a series of specimens, appears to me worthy of separation 

 from velata and sequinoclialis, being realiy more different from them 

 than are the two latter from each other. Whether the two speci- 

 mens are identical as species remains to be proved ; the difference 

 between the white eyelids of the one, with the eye not encircled be- 

 hind by black, and the narrow black border behind the eye of the 

 other, to the exclusion of the white eyelids, is somewhat analogous 

 to that distinguishing G. macgillivrayi from O. Philadelphia. The 

 former condition may, however, be only a feature of immaturity, as 

 the female and young G. Philadelphia have whitish eyelids. 



The differences from allied species are expressed in the synopsis. 

 The ash of the head is even more extended than in O. velata — reach- 

 ing over the nape and on the sides of head, where it replaces much 

 of the black of the cheeks of the others.. The bill is much stouter, 

 the culmen more curved ; the tail is longer, and the wings shorter and 

 more rounded. The legs are apparently intermediate in character. 



Smith- 

 sonian 

 No. 



CoUec- 

 tor's 



No. 



Sex 

 and 



Locality. 



When 

 Collected. 



Eeceived from 



Collected by 



34,017 

 ? 30,677 



16 

 19S 



Mazatlan. 

 Petaleuleu, Guat. 



June 14, '62. 

 Sept. 1862. 



A. J. Grayson. 

 0. Salvin. 



(34,017.) Type of species. 



Geotlilypis Philadelphia. 



Sylvia philadelphin, WiLS. Am. Orn. 11, 1810, 101, pi. xiv ; Add. ; Ndtt. 

 — Trichas Philadelphia, Jakd. — Reikhakdt, Vidensk. Meddel. for 

 1853, and Ibis, 1861, 6 (Greenland). — Geothlypis phila. Baird, 

 Birds N. Am. 1858, 243, pi. Ixxix, fig. 3.— Sclatek, Catal. 1861, 27 

 (Orizaba). — Lawkence, Ann. N. Y. Lye. 1861, 322 (Panama). 

 FiGDKEs: WiLS. Am. Orn. II, pi. xiv. — Add. B. A. II, pi. 101. 

 Hab. Eastern province of United States to British America ; Greenland ; 

 southeastern Mexico and Panama R. R. Not recorded from West Indies or 

 Guatemala. 



