BIKBS OF NOBTH AND MIDDLE AMERICA. 681 



bright yellowish olive-green, abruptly defined anteriorly against yel- 

 low of hindneck; under parts rich lemon yellow, the sides and flanks 

 strongly tinged with light brownish olive-green; bill entirely deep 

 black; legs and feet pale brown (in dried skin); length (skin), 121; 

 wing,55.5; tail,54; exposed culmen, 14; tarsus,21.5; middle toe, 14.5.' 



Adult female in spring. — Forehead and supra-auricular region wax 

 yellow;" crown, occiput, and hindneck brownish olive-green; rest of 

 upper parts plain yellowish olive-green, becoming dull grayish on ter- 

 minal portion of remiges; upper portion of lores yellowish, like super- 

 ciliary and supra-auricular regions; lower portion of lores pale grayish; 

 suborbital and auricular regions light olive-grayish, more or less 

 tinged with yellow, and finely streaked with paler; lower parts (includ- 

 ing malar region) bright lemon yellow, more or less tinged with Indian 

 yellow or safl'ron yellow on chest (sometimes on throat and chin also), 

 the sides and flanks shaded with bi-ownish olive-green; maxilla brown- 

 ish black with paler tomia; mandible similar but more or less brownish 

 basally; feet as in adult male; length (skins), 118-123 (121); wing, 51- 

 54.5 (52.3); tail, 49-50 (49.7); exposed culmen, 11.5-12 (11.7); tarsus, 

 20-21 (20.3); middle toe, 13.5-14.5 (14).' 



Young male, first plumage. — Above plain olive, the remiges and 

 rectrices olive-green; sides of head and neck similar in color to upper 

 parts, but loral, suborbital, and auricular regions duller, more grayish 

 olive; a small dull whitish spot on lower eyelid; under parts plain pale 

 olive, the abdomen, anal region, and under tail-coverts pale buffy yel- 

 low or straw yellow; bill as in adult female. 



Eastern Mexico (Alta Mira, near Tampico, southern Tamaulipas). 



Geolhlypis flaviceps Nelson, Auk, xvi, Jan., 1899, 31 (Alta Mira, near Tampico, 

 a. Tamaulipas, e. Mexico; coll. U. S. Nat. Mus. ). 



GEOTHLYPIS CHIRIQUENSIS Salvin. 

 CHIRiaUI YELLOW-THROAT. 



Similar to G. mlata,* but with the forehead much more extensively 

 black. 



Adult male. — " General color above olive-yellow [i. e., olive-green], 

 a shade lighter on the rump and upper tail-coverts; lesser and median 

 wing-coverts like the back; greater coverts, primary coverts, and 

 quills dusky brown, externally like the back, the primaries decidedly 



'One specimen (the type). 



"This sometimes involving anterior portion of crown. 



'Three specimens. 



^Siflmx vehta Vieillot, Ois. Am. Sept., ii, 1807, 22, pi. ^4:.—G[eothlypis'] velata 

 Cabanis, Mus. Hein., i, 1850, 16.— Geothlypis velata Sclater, Cat. Am. Birds, 1862, 

 27.—[Syhia'] ciicullata'Lsitha.m, I«dex Orn., ii, 1790, 528.— Tanagra canicapilla Swain- 

 son, Zool. lUustr., Istser., iii, 1822-23, pi. 174. (Brazil, Argentina, Paraguay, and 

 eastern Peru.) 



