_Diagnosis._--Coloration of adult male: Forehead and crown Pale Grayish Blue, slightly paler anteriorly; orbital ring Lemon Yellow; rest of head and neck, including crest, Olive-Yellow; throat paler and tinged with Light Gull Gray; back, scapulars, rump, upper tail coverts and wing coverts uniform Bluish Slate-Black; chest and breast similar but paler; sides and flanks Yellowish Olive-Green; thighs, lower abdomen, and under tail coverts Lemon Yellow; remiges, primary coverts, and tail Black, glossed with Bluish Black and edged with Gull Gray; inner webs of rectrices (except two middle pair) with large middle patch of White; bill, legs, and feet Black. Coloration of adult female: Forehead and crown Pale Gull Gray, becoming paler anteriorly; rest of head, together with neck, back, scapulars, rump, and wing coverts plain Yellowish Olive Green; chest and breast similar but more grayish; lower abdomen and flanks White tinged with Yellowish Olive; under tail coverts Olive-Gray; remiges, primary coverts, and rectrices Black with Gull Gray edges. Coloration of young: Dorsum plain Light Grayish Olive; upper tail coverts Brownish Olive; underparts Grayish Olive anteriorly, becoming more Yellowish Olive on abdomen; under tail coverts pale Yellowish Olive with Grayish Olive base; bill and feet Brownish Drab. _Measurements_--In adult male, wing 96.2, and tail 135.7; in adult female, wing 93.9, and tail 113.7; both sexes, culmen 12.6, and tarsus 19.1. _Range._--Highlands of Costa Rica and extreme western Panama. Genus =Phainopepla= Sclater _Phainopepla_ Sclater, Proc. Zool. Soc. London, 26:543, 1858. Type _Phainopepla nitens_ (Swainson). _Diagnosis._--Tail almost as long as wing; head with pointed crest of narrow, separated feathers; rectrices without white; bill narrow, compressed terminally; conspicuous white patch under wing; nostril small, exposed; rictal bristles distinct; tail slightly rounded. =Phainopepla nitens nitens= (Swainson) Phainopepla _Phainopepla nitens nitens_ (Swainson), Anim. in Menag., 1838:285, Dec. 31, 1837. _Diagnosis._--Coloration of adult male: Uniform glossy Bluish Black; inner webs of primaries except innermost pair with middle portion White; bill, legs, and feet Black. Coloration of adult female: Plain Olivaceous Black, longer feathers of crest Black, edged with Gull Gray; remiges and rectrices Dusky Drab to Black; rectrices and coverts margined by White; bill and feet Brownish Drab to Dusky Brown. Coloration of young: Like adult female but more Brownish Drab. _Measurements._--No specimens examined; larger than _P. n. lepida_ (Van Tyne, 1925). _Range._--Central and southern Mexico, in states of Coahuila, San Luis Potosi, Durango, Guanajuato, Mexico, Puebla, and Veracruz. =Phainopepla nitens lepida= Van Tyne Phainopepla _Phainopepla nitens lepida_ Van Tyne, Occ. Pap. Bost. Soc. Nat. Hist., 5:149, 1925. _Diagnosis._--Coloration same as _P. n. nitens_; separated by smaller size.