508 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 97 
This race is more olivaceous, less brownish, above than any of the 
other forms of this species. : 
Zimmer (Amer. Mus. Nov., No. 994, 1938, p. 30) suggests that 
cabanisi may have to be “‘split’”’ into two or possibly three races— 
vireoninus Ridgway of Tobago, and another, for which no name is 
already available, from the upper stretches of the Orinoco. Material 
is not available to do more than again call attention to this possibility. 
A specimen was collected at San Antonio, on the Upper Orinoco, 
March 4, 1931, but was preserved in alcohol, rendering it quite useless 
for subspecific determination. 
CNEMOTRICCUS FUSCATUS DUIDAE Zimmer; Duida Dusky Flycatcher 
Cnemotriccus fuscatus duidae Zimmer, Amer. Mus. Nov., No. 994, 1938, p. 30 
(Playa del Rio, Base, Mount Duida, Venezuela, altitude 550 feet). 
SPECIMENS COLLECTED 
lad. &, 1 ad. 9, Brazil, Salto do Hud, Rio Maturacé (Brazilian-Venezuelan 
border), November 17, 1930. 
lim. o, Brazil, Cucuhy, Rio Negro, February 6, 1930. 
The immature bird is paler and tawnier above than are the adults. 
The adult male is considerably darker than the female. 
TERENOTRICCUS ERYTHRURUS VENEZUELENSIS Zimmer: Venezuelan Red-tailed 
Flycatcher 
Terenotriccus erythrurus venezuelensis ZimmMeR, Amer. Mus. Nov., No. 1042, 
1939, p. 6 (Esmeralda, Mount Duida, Venezuela; altitude 325 feet). 
SPECIMENS COLLECTED 
lad. 9, Brazil, Cucuhy, Rio Negro, February 7, 1930. 
1 ad. 9, Venezuela, San Carlos, Rio Negro, Amazonas, January 28, 1931. 
2 ad. o&, 1 im. 9, Venezuela, Chapazon, Brazo Casiquiare, January 30-31, 
1931. 
lim. o, Venezuela, Brazo Casiquiare, mouth of Cafio Atamoni, February 6, 
1931. 
1 ad. o&, Venezuela, Raudal Corocoro, Brazo Casiquiare, February 9, 1931. 
2 ad. o, Venezuela, Brazo Casiquiare, below mouth of Rio Pacila, February 
13, 1931. 
lim. o&, Venezuela, Brazo Casiquiare, below Cafio Caripo, February 22, 1931. 
1 ad. o, Venezuela, Cerro Yapacana, Upper Orinoco, March 19, 1931. 
This race is more grayish on the top of the head and the back, and 
slightly paler below than is 7. e. signatus of eastern Ecuador and 
northeastern Peru, the subspecies most like it in color. It ranges from 
the upper stretches of the Rio Negro and the Rio Uaupes, Brazil, to 
southern Venezuela in the valleys of the Upper Orinoco and Caura 
Rivers and to Mount Duida. 
MYIOBIUS BARBATUS BARBATUS (Gmelin): Whiskered Myiobius 
Muscicapa barbata GMELIN, Systema naturae, vol. 1, pt. 2, 1789, p. 933 (based on 
Daubenton, Planches enluminées . . ., pl. 830, fig. 1: Cayenne). 
