568 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



shortest; tail fuscous-black tipped with white and crossed by four 

 rather narrow white bands equally spaced along its length, the two 

 halves of each band sometimes slightly unevenly located with respect 

 to their meeting with the shaft; chin, throat, cheeks, auriculars, 

 breast, abdomen, sides, flanks, under tail coverts, and under wing 

 coverts white, the cheeks and auriculars tipped with blackish or 

 grayish; a blade, crescentic gorget separating the auriculars from 

 the ventral continuation of the white collar; some of the feathers of 

 the breast and sides and flanlvs with fine black shafts; iris dark brown 

 to orange brown; cere, lores, and orbits olive-green to yellovv^ish olive- 

 green; bill bluish black to black; tarsi and toes yellow; claws blackish. 



Adult, tawny phase (sexes alike). — Similar to the light phase but 

 with the wings more blackish, less fuscous-black, and with the nuchal 

 collar and the entire underparts pinkish buff to light cinnamon-bufF 

 (the tail bands are white, not buffy). 



Adult, dark phase. — Similar to light phase, but without any light 

 nuchal collar, with the entire face, chin, throat, and breast fuscous, 

 the abdomen, sides, flanks, thighs, and under tail coverts whitish 

 heavily barred with blackish. ^^ 



Juvenal, light phase (sexes alil^e). — Forehead, crown, occiput, nape, 

 cheeks, auriculars, scapulars, interscapulars, back, rump, upper 

 wing coverts, remiges, and upper tail coverts sepia to dark sepia, a 

 white or pale buffy nuchal collar as in adult, separating the brown of 

 the nape from that of the interscapulars ; the upper tail coverts some- 

 what darker than the back and banded with white; the scapulars, 

 median and greater upper wing coverts barred, the lesser ones mar- 

 gined, with tawny-olive to Saccardo's umber; the remiges internally 

 white banded with fuscous as in adults ; tail as in adults, but with five 

 irregular white bands and tipped with the same; entire underparts 

 whitish to very pale cinnamon-buff, the chin and middle of upper 

 throat white, the feathers of the lower throat, breast, anterior and 

 lateral portions of abdomen, sides, flanks, and thighs each with at 

 least two heavy transverse fuscous to fuscous-black bars, and with 

 fine brownish shaft lines in some cases ; lower median part of abdomen 

 and under tail coverts either immaculate or less heavily marked than 

 abdomen; under wing coverts as in adult, the greater ones subtermi- 

 nally spotted with fuscous-black; iris orange-brown; bill greenish 

 olive like the cere, darker on the culmen; tarsi and toes yellowish 

 green. 



*'It is not impossible that the abdomen, sides, flanks, etc., might become 

 wholly fuscous in older birds. The specimen figured by Salvin and Godman 

 (Biol. Centr.-Amer., Aves, iv, 1901, pi. 65), on which this description is based, 

 was said to be not fully adult. See also Chapman (Bull. Amer. Mus. Nat. Hist., 

 Iv, 1926, 221), who records two melanistic birds with barred abdomen, of the 

 Ecuadorean race M. s. buckleyi. 



