GEOTHLYPIS. 525 



/ 2 . Bill stouter and tarsus shorter. Adult male with hinder 

 border to black mask usually more or less tinged with 

 pale yellow laterally, and occiput dull olive-green like 

 back; wing 2.30-2.55 (2.42), tail 2.25-2.55 (2.42), ex- 

 posed culmen .60-.63 (.62), tarsus .81-.85 (.84). Hab. 

 Island of Abaco, Bahamas. 



G. tanneri EIDGW. Abaco Yellow-throat. 1 



e 7 . Black mask of adult male bordered behind by yellow (much 

 as in 6r. beldingi) ; upper parts very vivid olive-green ; lower 

 parts very rich gamboge-yellow, including anal region and 

 flanks, the latter, however, tinged with olive-green. Adult 

 female with forehead and superciliary region olive-yellow- 

 ish, or yellowish olive-green, and lower parts wholly bright 

 yellow. Wing 2.40-2.60 (2.47), tail 2.45, exposed culmen 

 .61-.62, tarsus .81-.88 (.85). Hab. Eleuthera Island, Ba- 

 hamas. G. coryi KIDGW. Cory's Yellow-throat. 2 

 c 2 . Bill extremely slender and acute ; black mask of adult male extending 

 over crown, and without any lighter posterior border ; legs and feet 

 dark brown or blackish. 



Adult male : Above deep olive, or olive-brown, with whole top and 

 sides of head, including malar region, black ; lower parts oil- 

 yellow or saffron, inclining to gamboge on throat, and much 

 tinged with brown on sides and flanks. Immature male (or 

 adult male in winter ? ) similar, but with top of head dull olive, 

 the lores, ear-coverts, and malar region dull black. Adult fe- 

 male : Similar to male, but without any black on head. Length 

 (skin) about 4.80-5.00, wing 2.25-2.35, tail 2.20-2.25, tarsus .80- 

 .85. Hab. Southeastern Mexico (Orizaba, etc.). 



G. speciosa SCL. Orizaba Yellow-throat. 3 



Bill very stout, decidedly deeper than broad, its greatest depth much more than 

 half its length from nostril, the culmen strongly curved. (Subgenus Chamce- 

 thlypis EIDGW.*) 



Adult males plain olive-green above, becoming gray on top of head (some- 

 times on nape also) ; lores (sometimes also space surrounding eye) 

 black ; lower parts gamboge-yellow, sometimes becoming buffy whitish 

 on lower belly and flanks. Adult females similar to males, but lacking 

 gray and black of head, and yellow of lower parts paler. 

 ft 1 . Eyelids white. 



c 1 . Bill smaller ; belly and anal region buffy whitish, the sides and flanks 

 pale grayish buff; adult male with top of head bluish gray; wing 

 2.10-2.25, tail 2.40-2.50 (feathers much worn at tips), exposed cul- 



1 Geothlypis tanneri RID'GW., Auk, iii. July, 1886, 335. 



2 Geothlypis coryi RIDGW., Auk, iii. July, 1886, 334. 

 8 Geothlypis speciosa Set., P. Z. S. 1853, 447. 



* New subgenus. Type, Geothlypis poliocephala B AIRD. 



