Todd — Diagnoses of New Birds from Tropical Aim tick. 173 



Xenops genibarbis neglectus subsp. nov. 



Similar in general to Xenops genibarbis mexicanus Sclater, hut much 

 paler, less rufescent throughout. 



Type, No. 34.S72, Collection Carnegie Museum, adull male; Las 

 Quiguas, Venezuela, September 22, 1910; M. A. Carriker, Jr. 



Xenicopsis striolatus sp. nov. 



Related to Xenicopsis guttulatus Sclater, but without distinct supercil- 

 iaries; pileum distinctly streaked with buffy; and streaking on throat 

 ami sides of head not squamate. 



Type, No. 37,105, Collection Carnegie Museum, adult female; Anzoa- 

 tegui, Estado Lara, Venezuela, -March :,', L911; M. A. Carriker, Jr. 



Dendrocolaptes polyzonus sp. nov. 



Differs from Dendrocolaptes certhia certhia (Boddaert) in being much 

 darker and more rufescent brown, the pileum and hind neck with scarcely 

 any indication of buffy or fulvous spotting, each feather being regularly 

 barred (in concentric pattern) with dusky black. 



Type, No. 38,380, Collection Carnegie Museum, adult; Provence del 

 Sara, Bolivia, July II, 1910; .lose Steinbach. 



Picolaptes bivittatus certhiolus subsp. nov. 



Similar to Picolaptes bivittatus bivittatus (Lichtenstein), but less suf- 

 fused with buffy below; hack and under wing-coverts less rufescent ; and 

 the superciliaries and streaks on the pileum paler, less buffy. 



Type, No. 32,938, Collection Carnegie Museum, adult male; Curicke, 

 Rio Grande, Bolivia, August 17, 100°; Jose Steinbach. 



Phcethornis striigularis ignobilis subsp. nov. 



Resembles Phoethornis striigularis striigularis Gould, hut is paler be- 

 low, the throat more uniform; rect rices with broader white edges and 

 tips, tin- edgings of the outer rectrices more decidedly buffy; and the 

 hind neck ami rump paler cinnamomeous. 



Type, No. 34,813, Collection Carnegie Museum, adult male; Las 

 Quiguas, Venezuela, September in, 1910; M. A. Carriker, Jr. 



Agyrtria hollandi sp. nov. 



With a general resemblance to Agyrtria milleri (Bourcier), hut crown 

 bright blue (not greenish blue); under parts less extensively white; sides 

 of the throat and breast prominently spangled with light blue; and upper 

 parts much darker green. 



Named for Dr. \V. J. Holland, Director of the Carnegie Museum, in 

 recognition of his interest in the acquisition of collections illustrating the 

 neotropical avifauna. 



Type, No. 33,938, Collection Carnegie Museum, adult male; El Dorado, 

 Rio Cuyuni, Venezuela, April Hi, L910; M. A. Carriker, Jr. 



