156 BROOKLYN INSTITUTE MUSEUM. SCIENCE BULLETIN 2. 6. 



VIREOSYLVA OLIVACEA (Linnaeus). 

 [Muscicapa] olivacea Linnaeus Syst. Nat., ed. 12, 1766, p. 327. 



This species has not been observed by the writer, but Miller and 

 Iglseder sent to the American Museum two examples from Boca de 

 Sina, Rio Cunucunuma, Upper Orinoco. 



PACHYSYLVIA THORACICA GRISEIVENTRIS (Berlepsch & Hartert). 

 H\'lophilus thoracicus griseiventris Berlepsch & Hartert. Novit. Zool. 



XL 1902. p. ii. 



Klages collected the type (male) and a female at Suapure on the 

 Caura River in November, 1899. They were sent to the Tring 

 Museum, as was also a male specimen collected by Andre at La 

 Pricion on the Caura. The writer did not find this species on the 

 Orinoco proper. 



PACHYSYLVIA AURANTIIFRONS SATURATA Hellmayr. 



Pachysylvia aurantiifrons saturata Hellmayr, Novit. Zool. XIII. 1906. 



p. 12 (Type, San Antonio, Cumana, Venezuela). 



Mr. C. W. Beebe collected specimens of this Pachysylvia at Guanoco 

 which agree exactly with Trinidad skins. 



PACHYSYLVIA FERRUGINEIFRONS (Sclater). 



Hylophilus ferrugineifrons Sclater, P. Z. S. 1862. p. no; Berlepsch & 

 Hartert, p. 12. 



In the heavily wooded regions above the falls of the Orinoco this 

 species replaces the abundant P. Havipes acuticauda of the middle and 

 lower stretches of the river. Except during the nesting season it 

 associates in small flocks or family parties which frequently join the 

 mixed companies of birds that are so characteristic of tropical forests. 

 This species was also collected on the Caura River at Suapure 

 (Klages) and Nicare and La Pricion (Andre).- 



PACHYSYLVIA FLAVIPES ACUTICAUDA (Lawrence). 

 Hylophilus acuticauda Lawr., Proc. Acad. Nat. Sci. Phila. XVII. 1865. 



P- 37- 

 Hylophilus Havipes acuticauda Berlepsch & Hartert, p. 12. 



Common at Ciudad Bolivar and Caicara. 



All specimens procured indicated that the species was brooding 

 in May and June, but I did not succeed in finding either nest or eggs. 



