CHERRIE: ORNITHOLOGY OF THE ORINOCO REGION. 289 



Hypocnemis flavescens flavescens Sclater. 



Hypocnemis flavescens Scl. P. Z. S. 1864 p. 609 (Marabitanas, Rio 

 Negro, Brazil). 



In the American Museum collection is a series from the neighbor- 

 hood of the foot of Mt. Duida and Boca de Sina, Rio Cunucunuma 

 (Upper Orinoco) that probably represent typical flavescens flavescens. 



I am not at all sure that the Caura River form is sufificiently dis- 

 tinct to warrant separation but as pointed out by Mr. Todd the breast 

 seems less distinctly squamate and apparently there is a slight difference 

 in size, /. humilis being the smaller. 



Hypocnemis flavescens humilis Todd. 



Hypocnemis flavescens humilis Todd, Proc. Biol. Soc. Wash, XXVI : 



1913: 172 (La Lajita, Caura, Venezuela). 

 Hypocnemis flavescens Berlepsch & Hartert, p. yy. 



Not observed on the Orinoco proper, but recorded from Nicare, 

 Suapure, La Lajita and La Pricion on the Caura River. 



Hylophylax poecilonota poecilonota (Cabanis). 



Hypocnemis poecilonota Cab., Weigm. Arch. 1847. P- 213. PI. 4, fig. 2; 

 Berlepsch & Hartert, p. 78. 



Hypocnemis poecilinota poecilinota Hellmayr, Novit. Zool. XIII. 1906. 



p. 371 (Munduapo and Nericagua, Orinoco River, Suapure, Nicare, 



La Union and La Pricion, Caura River). 

 Hylophylax poecilonota Ridgway, Birds of N. & M. Am. V: p. 128. 



Common about Munduapo and Nericagua. Also recorded by 

 Berlepsch and Hartert, and by Hellmayr from points on the Caura 

 River. In the American Museum there is a specimen from Suapure. 



Hylophylax poecilonota lepidonota (Sclater & Salvin). 



Hypocnemis lepidonota Scl. & Salv. P. Z. S. 1880 p. 160 Sarayacu, E. 



Ecuador. 



Miller and Iglseder, collecting for the American Museum, at the 

 foot of Mount Duida secured a series of specimens that I have referred 

 to this race. The males, however, are paler below, light neutral gray 

 (Ridgway's Color Standards), than are two other specimens, one from 

 La Murelia, Cacjueta, Colombia, and one from Zamora, Province de 

 Loja, Ecuador, that are deep neutral gray. Two females are also lighter 



