92 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
feet dusky (bluish gray or grayish blue in life); length (skins), 132-160 
(148); wing, 61.5-71.5 (67.8); tail, 62.5-71 (67.1); culmen, 15.5-19 
(17.4); tarsus, 22-24.5 (23.5); middle toe, 12-15 (13.4).¢ 
Immature male.—Similar to the adult male but black less intense 
(more or less tinged with slate color), throat broadly streaked with 
whitish, and (sometimes) chest and breast very narrowly streaked 
with white; mandible pale horn color (in dried skins). 
Adult female.—Above plain slate color, the wings and tail marked 
with white, as in adult male; chin and throat mixed black and white; 
chest (except laterally) slate-black; breast (except laterally) black, 
uregularly streaked or otherwise marked with white; rest of under- 
parts (including sides of chest and breast), plain slate-gray, tinged 
with olive posteriorly; maxilla brownish black with paler tomia; 
mandible dull whitish (in dried skin); legs and feet horn color (bluish 
gray in life?); length (skin), 132-145 (138); wing, 60.5-63 (61.6); 
tail, 52.5-64 (60); culmen, 16-17 (16.5); tarsus, 22-24 (22.8); middle 
toe, 12-14 (13.1). 
Eastern Panama (Lion Hill; Paraiso Station; Panam4; Sabana de 
Panamé; San Miguél Island), through Colombia (Remédios, Antio- 
quia; Santa Marta; Bucaramanga; Bogoté; Rio Cauca) to western 
Ecuadér (Babahoyo; Esmeraldas; Balzér Mountains; Pambilar; 
Chimbo), Venezuela (Altagracia) and Trinidad. ; 
Cercomacra nigricans ScuatEeR, Proc. Zool. Soc. Lond., 1858, 245 (Santa Marta, 
Colombia; coll. P. L. Sclater); Cat. Am. Birds, 1862, 184 (Bogot4 and Santa 
Marta, Colombia; Babahoyo, Ecuadér); Cat. Birds Brit. Mus., xv, 1890, 267 
(Paraiso Station, Panamd; Santa Marta, Remédios, Bogoté, and Bucara- 
manga, Colombia; Balzér Mts. Santa Rita, Babahoyo, and Esmeraldas, 
w. Ecuadér).—Sctater and Sauvin, Proc. Zool. Soc. Lond., 1879, 526 
(Antioqufa, Colombia)—Bzriepscn, Journ. fiir Orn., 1884, 308 (Bucara- 
manga, Colombia).—TaczaNnowski and BERLEPscH, Proc. Zool. Soc. Lond., 
1885, 100 (Ecuadér).—Sa.vin and GopMaN, Biol. Centr.-Am., Aves, ii, 1892, 
215 (Lion Hill and Paraiso Station, Panamd; Ecuadér; Venezuela; Triniddd; 
etc.).—Brriepscu and Harrert, Novit. Zool., ix, 1892, 76 (Altagracia, 
Venezuela; crit.), 612 (Pambildér, n. w. Ecuadér)—Tuayerr and Banas, 
@ Seventeen specimens. b Ten specimens. 
Locality. Wing; | ‘tat. | Gul | Te | Middle 
MALES. 
Seven adult males from eastern Panamd (mainland)........... 66.6 65.9 17.4 23.3 13.5 
Seven adult males from San Miguél Island, Panamé........... 68.4 68 17.7 23.4 13.1 
Three adult, males from Colombia..........-....22...02 2+ eens 70 67.7 16.8 24 13.8 
FEMALES. 
Two adult females from eastern Panamé (mainland).......... 61.2 60 17 23.5 13.7 
Seven adult females from San Miguél Island_.................. 61.9 61.1 16.4 22.6 13 
One adult female from western Ecuad6r....................... 60.5 52.5 16:5: | scccie wes race des 
