170 Proceedings of the Biological Society of Washington. 



glossy blue-black area) much darker, more orange rufous, little paler 

 than the abdomen. 



Type, No. 38,400, Collection Carnegie Museum, adult male; RioTurutu, 

 Provence del Sara, Bolivia, September 4, 1910; Jose Steinbach. 



Gymnostinops yuracares caurensis subsp. nov. 



Colors in general darker than in Gymnostinops yuracares yuracares 

 (D'Orbigny and Lafresnaye), and the bill decidedly weaker. 



Type, No. 32,375, Collection Carnegie Museum, adult male; Rio Mocho, 

 Rio Caura, Venezuela, November 29, 1!)0S); M. A. Carriker, Jr. 



Basileuterus auricapillus viridescens subsp. nov. 



Similar to Basileuterus auricapillus auricapillus (Swainson), but paler 

 and more greenish, less olive brownish above, and paler yellowish below, 

 with less greenish suffusion on the Hanks. 



Type, No. 38,376, Collection Carnegie Museum, adult female; Buena- 

 vista, Provence del Sara, Bolivia, July 8, L910; .lose Steinbach. 



Hemispingus basilicus sp. nov. 



Differs from all the other known species of this genus in having the 

 head black, with a conspicuous median crown-stripe of pale grayish 

 white, which is strongly tinged with citron yellow anteriorly; broad 

 superciliary stripe, suborbital and postauricular patches, and middle of 

 throat white or grayish white, the latter flecked with dusky; otherwise, 

 about as in II. alripileus (Lafresnaye). 



Type, No. X7,991, Collection Carnegie Museum, adult male; San Lo- 

 renzo, Santa Marta, Colombia, July 28, 1911; M. A. Carriker, Jr. 



Pheugopedius genibarbis bolivianus subsp. nov. 



Similar to Pheugopedius genibarbis genibarbis (Swainson), hut more 

 rufescent below, particularly on the posterior median portion, and some- 

 what duller rufous chestnut above. 



Type, No. 38,224, Collection Carnegie Museum, adult male; Provence 

 del Sara, Bolivia, October L2, 1909; Jose Steinbach . 



Planesticus olivater sancta5= marta; subsp. nov. 



Similar to Planesticus olivater olivater (Lafresnaye), but size larger; 

 upper parts darker, more olivaceous; under parts also darker, more 

 brownish olive. 



Type, No. 38,692, Collection Carnegie Museum, adult male; Cincinnati, 

 Santa Marta, Colombia, April 12, 1912; M. A. Carriker, Jr. 



Todirostrum schistaceiceps griseolum subsp. nov. 



Differs from Todirostrum schistaceiceps schistaceiceps Sclater in its more 

 grayish under parts, the greenish yellow on the sides, flanks, and under 

 tail-coverts duller and more restricted. 



Type, No. 36,292, Collection Carnegie Museum, adult male; El Ilacha, 

 Bolivar R. R., Venezuela, Decembers, 1910; M. A. Carriker, Jr. 



