BIKD8 OF NORTH AND MIDDLE AMEKICA. 685 



GEOTHLYPIS NELSONI NELSONI Richmond. 

 HOODED YELLOW-THROAT. 



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

 more slender, with much longer tail and smaller bill and feet. 



AMt raale in spring mid summer. — Forehead (very broadlj''), 

 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 

 gray continued laterallj^ 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 yellow; rest of upper parts, 

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

 times covering crown also, to the exclusion of the usual gray color of 

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

 than on other portions; under parts bright lemon yellow, becoming 

 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, 11-11.6 (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 oucullata (not Sylvia cucuUaia Latham*) Salvin and Godman, Ibis, 

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

 coll. Salvin and Godman). 



Geothlypis nehoni Richmond, Auk, xvii, Apr., 1900, 197, text (to replace G. aicul- 

 lala, preoccupied). 



GEOTHLYPIS NELSONI MICRORHYNCHA Ridgway.5 

 HIDALGO YELLOW-THROAT. 



Similar to G. n. nelsoni, 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 antiee, 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. 



