CHERRIE : ORNITHOLOGY OF THE ORINOCO REGION. 147 



I believe the nests of this wren, like those of H. griseus always 

 have as a foundation the abandoned, and frequently half-decayed nests 

 of either Pitangus or some species of Mylosetetes. 



The eggs are elongated-ovate in shape and a delicate pure white in 

 color. 



HENICORHINA LEUCOSTICTA (Cabanis). 

 Cyphorhinus leucostictus Cab., Orn. Not. in Arch. Naturg. XIII. 1847. 



p. 206. 

 Henicorhina leucosticta Berlepsch & Hartert, p. 5. 



Andre collected specimens of this wren on the Caura River. 



MICROCERCULUS CAURENSIS Berlepsch & Hartert. 



Microcerculus caurensis Berlepsch & Hartert, Novit. Zool. IX. 1902. p. 5. 

 A single specimen of this wren, said by its describers to be 

 ''closely allied to M. bambla from Guiana" was collected by Andre at 

 Nicare on the Caura River. 



THRYOPHILUS ALBIPECTUS ALBIPECTUS Cabanis. 



Thryophilus albipectus Cab. in Schomb. Reise Brit. Guiana, III. 1848. 



p. 673 (Cayenne) ; Berlepsch & Hartert, p. 6 (Suapure, La Pricion, 



La Union and Nicare, Caura River). 



In the Brooklyn Museum collection and that of the American 

 Museum of Natural History, the writer has had for study Venezu- 

 elan specimens from localities in the Orinoco region as follows : On 

 the Orinoco proper; Nericagua, Munduapo, Caicara, Ciudad Bolivar, 

 Agua Salada de Ciudad Bolivar and Las Barrancas; La Cascabel (on 

 the River San Feliz near its junction with the River Cuchivero) ; 

 Mato River (near its junction with the Caura River) ; Maripa and 

 La Union on the Caura River. Typical examples of three forms are 

 represented, together with specimens that are intermediate in char- 

 acter. 



Specimens collected by the writer at "La Cascabel" compared 

 with an example of typical albipectus from Cayenne (No. 668 Cherrie 

 and Gault Coll.) in the American Museum collection, agree almost 

 exactly in color both above and below, but lack the faint traces 

 of dusky bars on the back that are to be seen in that specimen. The 

 American Museum series from Maripa and a single example among 

 those labeled "La Union" (Klages Coll.) are referable to this form. 

 Typical examples have been also recorded from Saupure, La Pricion, 



