4 Proceedings of the Biological Society of Washington. 



more decidedly suffused with brown, and size smaller. Differs from 

 0. sincipitalis neglectus Chapman in its smaller size, more brownish 

 suffusion of the upper and under parts, paler yellow forehead, and in 

 particular in the dull greenish (instead of rich deep yellow) color of the 

 bill. 



Type No. 51,486, Collection Carnegie Museum, adult male; Buenavista, 

 Bolivia, August 14, 1915; Jose Steinbach. 



Icterus mesomelas carrikeri subsp. nov. 



Similar to Icterus mesomelas taczanowskii Ridgway in size and general 

 coloration, but with the white outer margins of the remiges very narrow 

 or wanting, as in Icterus mesomelas salvinii Cassin. 



Type No. 49,711, Collection Carnegie Museum, adult male; Fundacion, 

 Santa Marta, Colombia, October 18, 1915; M. A. Carriker, Jr. 



Myiobius modestus suffusus subsp. nov. 



Similar to Myiobius modestus modestus Todd, but under parts decidedly 

 more yellowish, less buffy, especially on the under tail-coverts. 



Type No. 52,134, Collection Carnegie Museum, adult male; Turbaco, 

 Bolivar, Colombia, January 13, 1916; M. A. Carriker, Jr. 



Attila caniceps sp. nov. 



Pileum dull grayish, with obscure narrow shaft-streaks of dusky, the 

 lores flecked with white; sides of neck and back dull olive citrine, shaded 

 posteriorly with Dresden brown, and passing into pale wax yellow on 

 the rump and upper tail-coverts; tail dull brown (between Brussels 

 brown and raw umber); primaries dusky, with narrow external margins 

 of grayish; secondaries dusky, externally margined with Dresden brown, 

 the inner ones wholly of this color; wing-coverts dusky, tipped with 

 buckthorn brown ; chin and upper throat obscurely streaked with grayish 

 white and dusky brown ; lower throat and breast dull yellowish citrine, 

 fading into white on the abdomen, all these parts with obscure dusky 

 streaks; flanks and under tail-coverts pale lemon yellow, more or less 

 shaded with buffy; under wing-coverts yellow ocher. 



Type No. 52,736, Collection Carnegie Museum, adult male; Jaraquiel, 

 Bolivar, Colombia, March 3, 1916; M. A. Carriker, Jr. 



Attila neoxenus sp. nov. 



Above dark citrine, brighter on the pileum, which is narrowly streaked 

 with black, and passing into orange citrine posteriorly; rump and upper 

 tail-coverts empire yellow; tail rather dark Dresden brown; wings dusky, 

 the secondaries more or less margined externally with dark olive buff, the 

 wing-coverts tipped with dull buffy yellow; throat, breast, and sides of 

 head obscurely streaked with citron yellow and serpentine green ; abdo- 

 men white, passing into amber yellow on the flanks and under tail- 

 coverts ; under wing-coverts Naples yellow. 



