476 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 97 
PERCNOSTOLA RUFIFRONS MINOR Pelzeln: Smaller Black-headed Fire-eye 
Percnostola minor PELZELN, Zur Ornithologie Brasiliens, pt. 2, 1868, pp. 86, 159 
(Séo Isabel, Upper Rio Negro). 
SPECIMENS COLLECTED 
lad. o, Brazil, Cucuhy, Rio Negro, February 1, 1930. 
lad. @, 1 ad. 9, Brazil, Panela de Oneca, Rio Cauabury, November 1, 1930. 
2 ad. @, 3. ad. 9, Brazil, Serra Imeri, near Salto do Hud, Venezuelan border, 
December 6-8, 1930. 
lad. #, lad. 9, Brazil, Sio Gabriel, Rio Negro, December 29, 1930. 
1 ad. 9, Venezuela, Brazo Casiquiare, near Cafio Durutomoni, February 19, 
1931. 
The Cucuhy male is considerably darker, less slaty, more blackish; 
above than are the other males. It is in slightly more abraded 
plumage, but there is not enough difference in this respect to explain 
the darker coloration. 
As Zimmer has pointed out (Amer. Mus. Nov., No. 584, 1932, p. 8) 
this race ranges from the Upper Rio Negro northward to the southern 
slopes of Mount Duida and the Upper Orinoco, and westward across 
the Rio Uaupés into extreme eastern Colombia. 
SCHISTOCICHLA LEUCOSTIGMA LEUCOSTIGMA (Pelzeln): Spotted-winged Antcatcher 
Percnostola leucostigma PELzELN, Zur Ornithologie Brasiliens, pt. 2, 1868, p. 86, 
160 (Barra do Rio Negro= Mand4os). 
SPECIMENS COLLECTED 
lim. o, Brazil, Salto do Hud, Venezuelan border, Rio Maturacd4, November 
18, 1930. 
1 ad. o, Brazil, Serra Imeri, Venezuelan border, December 1, 1930. 
These specimens appear to be the northwesternmost records for this 
antcatcher and help to close the rather large gap between the known 
ranges of this race and of S. l. saturata of Mount Roraima and of S. l. 
obscura of Mount Auydn-tepui. They are definitely leucostigma; 
in fact, they show no tendency to vary in the direction of S. 1. saturata 
or of S. l. obscura. 
The immature bird is like the adult in plumage but has a few dark 
brownish feathers left on the scapulars, upper back, wings, sides, and 
flanks. 
SCLATERIA NAEVIA ARGENTATA (Des Murs): White-breasted Antcatcher 
Herpsilochmus argentatus Des Murs in Castelnau, Expédition dans les parties 
centrales de |’ Amérique du Sud, pt. 7: Zoologie, sect. 1: Oiseaux, livr. 18, 1856, 
p. 56, pl. 17, fig. 2 (Nauta, northeastern Peru). 
SPECIMENS COLLECTED 
lim. ¢, Brazil, Serra Imeri, Rio Maturacdé, November 27, 1930. 
lim. &, Brazil, Sio Gabriel, Rio Negro, January 9, 1931. 
1 ad. o, Venezuela, Upper Orinoco, right bank opposite Corocoro Island, 
March 14, 1931. 
