SYNONYMY OF GEOTHLYPIS PHILADELPHIA 313 



Trichas tolmaei, Nutt. Man. i. 2d ed. 1840, 460. 

 Trichas tolmieii, Heerm. PRRR. x. 1859, 40. 

 Sylvia vegeta, Licht. "Mus. Berol." (cf. J.f.0. 1861,84). 

 Trichas vegeta, Bp. CA. i. 1850, 310. 



McGillivray's Warbler, McGillivray's Ground Warbler, Tolmie's Ground Warbler, 

 Authors. 



HAB. Middle and Western Provinces of the United States, and British 

 Columbia. East to the limit of arboreal vegetation along the Rocky Mount- 

 ains. South in winter through Mexico to Central America (Guatemala and 

 Costa Rica). Breeds throughout its United States range. 



OH. SP. $ 9 OUvaceuSj infrti Jlavus; capite et collo cano- 

 plumbeis, palpebris albis. 



$ 9 : Upprr parts, including exposed surfaces of wings and tail, clear olive- 

 green ; below bright yellow, shaded with olive on the sides. Head and neck 

 all around, and throat and fore breast clear ashy, the eyelids white, and the 

 loral region usually dusky, the throat with blackish centres to the feathers, 

 veiled by their gray skirting. Upper mandible blackish ; under mandible 

 and feet flesh-colored or pale yellowish. Length, 5 ; extent, 7f-8 ; wing 

 and tail each about 2J. 



Unlike the species of the G. trichas group, the sexes in the present case are 

 nearly alike, the chief difference between the adults being in the paler and 

 more hoary ash of the throat of the $ , without any of the concealed black. 

 In autumn, both sexes have the head more or less glossed with an extension 

 of the olive of the back. 



This bird differs chiefly from G. Philadelphia,* its Eastern representative, 



*Geothlypis Philadelphia, Mourning Warbler. 



Sylvia Philadelphia, Wils. AO. ii. 1810, 101, pi. 14, f. 6. V. Ency. Me~th. ii. 1823, 449, n. 



105. .Bp. Journ. Phila. Acad. iv. 1824, 189. Bp. Ann. Lye. N. Y. ii. 1826, 85. Nutt. 



Man. i. 1832, 404. Brew. Journ. Bost. Soc. i. 1837, 436. And. OB. v. 1839, 78. Pedb. 



Rep. Orn. Mass. 1839, 312. Thomps. N. H. Vermont, 1853, App. 23. 

 Trichas Philadelphia, Jard. " ed. Wilt-. 1832 ".Rich. Rep. Brit. Assoc. Adv. Sci. 1836, 1837, 



172. Bp. CGL. 1838, 20 (includes Oporornis agilis).Aud. Syn. 1839, 65. And. BA. 



ii. 1841, 76, pi. 101. Nutt. Man. i. 1840, 459.-Gfr. BLI. 1844, 65. Gray, G. of B. L 1848, 



197. Bp. CA. i. 1850, 310. Cabot, Naum. ii. Heft iii. 1852, 66 (Lake Superior). Hoy, 



Pr. Phila. Acad. vi. 1853, 312 ( Wisconsin ).- Reinh. Ved. Meddel. for 1853, 1854, 73 



(Greenland). Reinh. J. f. O. 1854,427 (Greenland). Kennic. Tr. Illinois Agric. Soc. 



i. 1855, 5e3. Putn. Pr. Ess. Inst. i. 1856, 226. Reinh. Ibis, iii. 1861, 6 (Greenland). 



Trippe, Pr. Ess. Inst, vi. 1871, 114. 

 Trichas philadelphica, Wtttis, Smiths. Rep. for 1858, 1859, 282 (Nova Scotia). Hoy, Smiths. 



Rep. for 1864, 1865, 438 (Missouri). 

 Geothlypis Philadelphia, Bd. BNA. 1858, 243; ed. of 18CO, pi. 79, f. 3. Wheat. Ohio Agric. 



Rep. for 1860, 1861, 373. Lawr. Ann. Lye. N. Y. vii. 1861, 322 (New Granada). 8cL 



Cat. AB. 1861, 27 (Orizaba). A lien, Pr. Ess. lust iv. 1864, 59 (Massachusetts). Bd. 



Rev. AB. 1865, 226. Dress. Ibis, 2d aer. i. 1865, 476 (Texas). tfamlin, Rep. Sec'y 



Maine Board Agric. 1865 (Waterville, Me., breeding). Mcllwr. Pr. ESP. InsL v. 



1866, 85 (Canada "West). Lawr. Ann. Lye. N. Y. viii. 1866, 2fe3. Lawr. Ann. Lye. 



N. Y. ix. 1868, 94 (Costa Rica).-<7<m?, Pr. Ess. Inst. v. 1868, 269. Trippe, Am. Nat. ii. 



1868, 175. Butch. Pr. Phila. Acad. xx. 1868, 149 (Laredo, Tex.). Coues, Pr. Bost. Soc. 



xii. 1868, 110 (South Carolina). v. Frantz. J. f. O. 1869, 294 (Costa Rica). Turrib. B. 



E. Pa. 1869, 23; Phila. ed. 16. Mayn. Guide, 1870, 99 (Massachusetts). Wyatt, 



Ibis, 3d eer. i. 1871, 322 (Ocana). Mayn. Pr. Bost Soc. xiv. 1872, 362 (New Hamp- 



shire and Maine). Allen, Bull. MCZ. iii. 1872, 126 (Kansas). Salv. Ibis, 3d ser. ii. 



1872, 149 (monographic) Coues, Key, 1872, 107. Ridgw. Am. Journ, Sci. 1872,459. 



