BIRDS OF NORTH AND MIDDLE AMERICA. 477 



"P[rt?'?(ta] " gutturalis Baikd, Brewek, and Ridgway, Hist. N. Am. Birds, i, 1874, 



208, in text. 

 [MniotUta'] gutturalis Gray, Hand-list, i, 1869, 238, no. 3452. 

 Oreothlypis gutturalis Ridgway, Auk, i, Apr., 1884, 169; Proc. U. S. Nat. Mus., 



xiv, 1891, 473 (descr. young female"). — Zeledon, Proc. U. S. Nat. Mus., viii, 



1885, 105; Anal. Mus. Nac. Costa Rica, 1,1887,106 (Irazu).— Cherrie, Proc. 



U. S. Nat. Mus., xiv, 1891, 524 (descr. young). 



OREOTHLYPIS SUPERCILIOSA (Hartlaub). 

 HARTLAUB'S WARBLER. 



Adult male. — Pileum, hindneck, sides of head, and auricular region 

 plain deep slate-gray or slate color, changing to darker slate or dull 

 blackish on orbital region and lores; a conspicuous superciliary stripe 

 of white extending from base of maxilla to behind auriculars; back, 

 scapulars, and rump plain bright olive-green; wings, upper tail-cov- 

 erts, and tail slate-gray, the inner webs of rectrices edged with white, 

 most broadly on outer pair; malar region, chin, throat, chest, and 

 breast bright yellow (lemon or gamboge), the upper chest marked 

 with a transverse (usually crescentic) spot or patch of rich chestnut; 

 abdomen and under tail-coverts white; sides and flanks light olive- 

 grayish; maxilla brownish black or dusky; mandible pale horn color 

 (in dried skins); legs and feet horn color (in dried skins); length (skins), 

 106.7-116.8(111.2); wing, 61.5-65.3 (63); tail, 45-10.3 (18); exposed 

 culmen, 10.2-11.9 (10.7); tarsus, 13.5-16 (15.7); middle toe, 9.4-10.4 



(9-9)/ 



Adult female. — Similar to the adult male and sometimes not distin- 

 guishable, but usually slightly duller in color, with the chestnut jugular 

 spot smaller, paler, often obsolete, sometimes wanting; 3'ellow of throat, 

 etc., rather paler; length (skins), 104.1-114.3 (109.5); "wing, 58.1-60.4 

 (59.9); tail, 43.4-46.7 (45.5); exposed culmen, 10.2-10.9 (10.7); tarsus, 

 15.5-16.8 (16.3); middle toe, 9.6-10.4 (10.2).' 



Yoimg., first 2^1 1 image. — Similar to duller-colored adult females, but 

 plumage of looser texture, gray parts tinged with olive, and the mid- 

 dle and greater wing-coverts tipped with dull whitish or buffy, pro- 

 ducing two narrow bars.'^ 



Highlands of Mexico, in States of Chihuahua (Jesus Maria), Durango 

 (Ciudad Durango; El Salto), Jalisco (Sierra Nevada; San Sebastian), 

 Michoacan (Patzcuaro), Pue])la (Huachinango), Vera Cruz (Orizaba; 

 Mirador; Las Vigas), Hidalgo (Real del Monte; El Chico), Guerrero 

 (mountains near Chilpancingo), Oaxaca (La Parada; Talea; Cerro San 

 Felipe), and Chiapas (San Cristobal); highlands of Guatemala (Coban 

 toChisec; Quezaltenango; Volcande Fuego; Santa Barbara; Calderas). 



^ Ten specimens. 



^ Four specimens. 



^ The two specimens from which the above description was taken are full-grown 

 and only partly in first plumage, the yellow of anterior lower parts having already 

 been acquired. 



