BIRDS FROM BRAZIL AND SOUTHERN VENEZUELA—FRIEDMANN 569 
Two specimens in addition to those listed above were preserved 
in alecohol—one from Sao Gabriel, January 13, 1931, and one from 
near Cerro Cariche, Upper Orinoco, February 24, 1931. 
MYOSPIZA AURIFRONS AURIFRONS (Spiz): Yellow-browed Sparrow 
Tanagra aurifrons Sprx, Avium species novae..., Brasiliam ... , vol. 2, 1825 
p. 38, pl. 50, fig. 2 (‘in provincia Bahia” errore = Fonte Béa, Solimées, 
Brazil (Hellmayr, Nov. Zool., vol. 17, 1910, p. 281)). 
SPECIMENS COLLECTED 
lad. @, 1 im. @, Mandos (Flores Tramway), Amazonas, Brazil, September 
27, 1930. 
lim. o&, Barcellos, Rio Negro, Amazonas, Brazil, October 6, 1930, 
2 ad. o, Santa Isabel, Rio Negro, Amazonas, Brazil, October 13, 1930. 
lad. o&', lad. 9?,1lim. ¢&, Sao eaomeb Rio Negro, Amazonas, Brazil, December 
26, 1930—January 14, 1931. 
lad. 9, Cucuhy, Rio Negro, eats: Brazil, February 6, 1930. 
These examples have been compared with a series from Peru, 
Ecuador, and Colombia (La Morelia) and have been found to be 
essentially alike. The western birds are slightly darker and slightly 
more olivaceous above, and would be referable to M. a. zamorae 
Chapman if that form were to be recognized. The difference is 
slight, however, not at all as definite as the original description of 
zamorae suggests. Inasmuch as Hellmayr (Catalogue of the birds 
of the Americas, pt. 11, 1988, p. 484, footnote) has also found zamorae 
to be doubtfully valid, I follow his arrangement in calling these birds 
typical aurifrons. 
The present specimens are about the northernmost Upper Ama- 
zonian ones yet collected. 
The immature birds are very variable. Two have considerable 
yellow on the lores and chin, while one has none. The last has the 
pectoral streaks much more strongly developed than the other two, 
and is also smaller and may be a younger bird. It also has the edges 
of the remiges and their greater upper coverts and of the feathers 
of the upper back more ochraceous-tawny than do the other two 
individuals. 
