176 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
but with cinnamon-rufous area confined to inner web; three outer- 
most primaries with inner web wholly dusky, the outer web mostly 
dull cinnamon-rufous; a narrow but conspicuous superciliary streak 
of buffy white, indistinct anteriorly; lores mostly dull grayish or 
dusky; a broad postocular streak of brownish black or dark sooty 
brown; auricular region dusky, streaked with pale brownish buff or 
whitish, and bordered below by a conspicuous subauricular streak 
of white; chin and throat dull white or yellowish white, the lower 
throat sometimes streaked, more or less, with olive; rest of under 
parts light grayish brown (hair brown to light isabella color), passing 
into a more rufescent or cinnamomeous hue posteriorly, streaked 
with dull white, the streaks broadest on chest; under wing-coverts 
deep ochraceous-buff; maxilla dusky horn color, paler on lower-basal 
portion; mandible dull pale yellowish or whitish (in dried skins), 
passing into dusky or horn color terminally; iris dark brown; legs 
and feet dusky horn color (dark bluish gray in life). 
Male.—Length (skins) 112-121 (115); wing, 63-71.5 (67.6); tail, 
43.5-50 (47.9); culmen, 12-13 (12.6); tarsus, 14.5; middle toe, 13-14 
(13.3). 
Costa Rica (Juan Vifias; Guayabo) and Panama (Boquete, 4,500- 
5,000 ft.; Volcan de Chiriqui), and southward through Colombia (San 
Antonio, Rio Cali; Rio Chiquitos; Rio Lima; Bogoté; Cauta; Medellin, 
Antioquia; Los Tambos; Santa Elena and Las Nubes, Santa Marta) 
and Ecuadér (Guayaquil; Machéy; Balzér Mountains; Sarayacu; 
Baeza; Vinces) to Peru (Chamicuros; Ropaybamba; Anquimarca; 
Tambillo; Guajango; Chirimoto; Cococho; Huambo; Nauta; Rio 
Ucayali; La Gloria; Borgofia; Garita del Sol; Idma; Santa Ana).? 
Xenops rutilans (not of Temminck) SciaTEeR, Proc. Zool. Soc. Lond., 1856, 27 
(Bogoté, Colombia; crit.). 
Xenops rutilus (not of Lichtenstein) Wyatt, Ibis, 1871, 331 (Cauta, Colombia).— 
SciaTER and Satvin, Proc. Zool. Soc. Lond., 1873, 270 (Chamicuros, e. Peru; 
2 Four specimens. 
Locality. Wing. | Tail. | SU | rarsus,| Middle 
MALES. 
Two adult males from western Panamé (Boquete, Chiriquf)...) 65.5 46.7 12.7 14.5 13 
Two adult males from northwestern Colombia (Rio Cali and 
Rio Lim6n).....-.-..- 2+ 2---ee eens e eee eee eee eee eee eee 69.7] 49 12.5] 145 13.7 
Eight adult males (X. r. rutilus) from southwestern Brazil 
(Chapada) sesascecncmussrevieeccenceseaesseictwededexeetavist 66.2 47.8 12.5 14 13.4 
FEMALES, 
One adult female from Trinid4d............... eee eee eee eee 63 43 12 14° | 13 
Four adult females (X. 1. rutilus) from Brazil (3 from Chapada).| 65.2 46.1 12.2 14 13 
b I have not seen specimens from Ecuadér or Peru. 
