7 REVISIOX OF THE GE^^US BA3ILEUTERUS TODD 21 



1).^ Superciliaries and sides of the head in general not slaty gray. 



p.^ Pileum plain olive greenish, iinstriped, uniform with the rest of the 

 upper parts, 

 d.^ Superciliaries and under parts bright yellow. 

 e.' Upper parts brighter (bright warbler green). 



Basileuterus flaveolus. 

 e.'' Upper parts duller (more olive green). 



1' ^mailer ; wing of male averaging less than 65 ivmi. 



Basileuterus signatus. 

 f." Larger; wing of male averaging more than 6") mm. 



Basileuterus Iv.teoviridis, 

 d.^ Superciliaries buffy; under parts was yellow, with darker 



shading Basileuterus richardsoni. 



c." Pileum with conspicuous black lateral stripes and a median coronal 

 stripe of some other color. 

 d.* Sides of the throat greenish, yellowish, or grayish. 



e.* Wings, tail, and upper parts in general decidedly olive 

 greenish (but compare "e'"'). 

 f.' Supraloral stripe and subauricular spot yellow, in con- 

 trast with the dull green sides of the head, 

 g.^ Above more greenish ; bill black. 



h.^ Larger ; wing of male averaging 68 mm. ; tail 



60.5 mm Basileuterus bivittatus, 



h.^ Smaller ; wing of male averaging 63.5 mm. ; 

 tail 54 mm. or le.ss. 



Basileuterus chrysogaster. 

 g.' Above more brownish ; bill horn brown. 



Basileuterus roraimae. 

 f.^ Supraloral stripe and subauricular spot (if present) 

 not yellow, 

 g.^ Coronal stripe dull yellowish or buffy. 



h.* Throat yellow or buffy, like the rest of the 

 under parts, 

 i.^ Auriculars only partly black. 



j.' Superciliaries more olive greenish, like 

 the back; under parts more olive 



yellow Basileuterus tacarcunae. 



j.^ Superciliaries more buffy, like the 

 under parts. 



Basileuterus meridanus. 

 i.^ Auriculars wholly black. 



Basileuterus tristriatus. 

 h.' Throat buffy, different from the yellow of the 

 rest of the under parts. 



Basileuterus trifasciatus. 

 g.' Coronal spot conspicuous, Mai's yellow to orange 

 rufous. 



h.* Under parts white Basileuterus hypoleucus. 



h.' Under parts bright yellow. 



Basileuterus auricapillus. 



