: ORNITHOLOGY OF THE ORINOCO REGION. 153 



At La Casabel and Las Guacas in 1907 this species was found 

 common in the tall grasses bordering the marshes. 



OPORORNIS AGILIS (Wilson). 

 Sylvia agilis Wilson, Am. Orn., 1812, p. 64 (Connecticut). 



There is in the American Museum collection a specimen collected 

 by Miller and Iglseder at Maipures. I believe this to be the first record 

 of the species in the Orinoco valley. 



BASILEUTERUS MESOLEUCUS Sclater. 



Basileuterus mesoleucus Scl., P. Z. S. 1865. p. 286; Berlepsch & Hartert, 



p. n. 



Klages sent examples of this species to the Tring Museum that 

 he obtained at Suapure on the Caura River. 



BASILEUTERUS AURICAPILLUS OLIVASCENS Chapman. 



Basileuterus vermivorus olivascens Chapm., Auk. X. 1893, P- 343 

 (Trinidad). 



This is an abundant species in Trinidad and Mr. C. William 

 Beebe secured a good example, in April, at Guanoco in the Orinoco 

 Delta region which agrees exactly with the Brooklyn .Museum series 

 from Trinidad. 



SETOPHAGA RUTICILLA (Linnaeus). 



Motacilla Ruticilla Linn. Syst. Nat. ed. 10. X. 1758. p. 186. 

 Setophaga ruticilla Berlepsch & Hartert, p. n. 



Not uncommon about Ouiribana de Caicara during April, 1898, but 

 observed only during the first week in May on the two recent expedi- 

 tions. 



DENDROICA AESTIVA AESTIVA (Gmelin). 

 Motacilla aestiva Gm. Syst Nat. I. 1788. p. 996. 

 Dendroica aestiva Berlepsch & Hartert, p. 9. 



The Yellow Warbler was noted from November 3rd to May 3rd 

 and was not uncommon. 



DENDROICA STRIATA (Forster). 



Muscicapa striata Forster, Phil. Trans. LXXII. 1772. p. 406. 

 Dendroica striata Berlepsch & Hartert, p. 9. 



