BIKDS OF NOETH AND MIDDLE AMERICA. 685 



GEOTHLYPIS NELSON! NELSONI Richmond. 

 HOODED YELLOW-THROAT. 



Similar in coloration to G. semiflava haird!^ but much smaller and 

 more slender, with much longer tail and smaller ])ill and feet. 



Adult male in sjyrhuj and sunnner. — Forehead (very broadl}-'), 

 together with loral, orbital, auricular, and malar regions, uniform 

 deep black, forming a conspicuous "mask;" crown dull gray or olive- 

 gray, at least next to posterior margin of the black frontal area, this 

 grav continued laterally and posteriorly along the upper posterior 

 border of the black mask, where lighter in color than on crown, and 

 sometimes tinged, more or less, with j^ellow; rest of upper parts, 

 including occiput and hindneck, uniform deep olive-green, this some- 

 times covering crown also, to the exclusion of the usual graj' color of 

 that portion, though the olive-green there is paler and more grayish 

 than on other portions; under parts bright lemon 3^ello\v, l)ecoming 

 paler (sometimes almost yellowish white) on lower abdomen and anal 

 region, the sides and flanks olive-green or grayish olive-green; under 

 tail-coverts tinged with olive-green; bill black; legs and feet deep 

 horn color (in dried skins); length (skins), 122-130 (125.7); wing, 56- 

 57 (56.5); tail. 59-64 (61.5); exposed culmen, 11-11.5 (11.2); tarsus, 

 20-20.5 (20.2); middle toe, 12-13 (12.7).' 



Adult female. — Above plain [yellowish olive], the lores and supercili- 

 ary region paler; beneath yellow, the breast tinged with ochraceous.'* 



Southeastern Mexico, in States of Vera Cruz (Jalapa; Cofre de 

 Perote; Jico) and Puebla (Chalchicomula). 



Geothlypis cucullata (not Sylvia cucidlata Latham*) Salvin and Godman, Ibis, 

 6th S3r., i, Apr., 1889, 237 (Cofre de Perote, near Jalapa, Vera Cruz, Mexico; 

 coll. Salvin and Godman). 



Geothlypis nelsoni Richmond, Auk, xvii, Apr., 1900, 197, text (to replace G. cucul- 

 lata, preoccupied). 



GEOTHLYPIS NELSONI MICRORHYNCHA Ridgway.^ 

 HIDALGO YELLOW-THROAT. 



Similar to G. n. nelso7n^ but with decidedly smaller bill, the adult 

 male without any gray behind the black mask or with a mere trace of 

 that color. 



' The black extending 40-50 mm. from the frontal antia\ thus sometimes involv- 

 ing the anterior portion of the crown. 



^ Three specimens. 



^Translation of Salvin and Godman's description, in Ibis, 1889, 237. 



* = Geothlypis velata ( Vieillot) . 



^ Type, no. 143333, coll. U. S. Nat. Mus. (Biological Survey collection) ; Real del 

 Monte, Hidalgo, Mar. 13, 1891; C. P. Streator. 



