118 PROCEEDINGS OF THE ACADEMY OF 



coverts immaculate ; the decided ochraceous tinge beneath, deepest 

 posteriorly. 



Young, first year (11,984, Washington, D. C.) : The blackish 

 above is much variegated, being broken by narrow rusty borders 

 to the interscapulars, rump-feathers, and lesser wing-coverts, the 

 broader and more ochraceous borders to scapulars and greater 

 wing-coverts, and partially concealed whitish spotting on the 

 former. Upper tail-coverts white, with broad bars of blackish- 

 brown ; secondaries and primaries edged terminally with whitish. 

 Tail dull umber-brown, growing darker terminally ; narrowly tipped 

 with white, and crossed with six obscure, narrow bands of dusky, 

 the (concealed) bases of all the feathers white. Superciliary 

 region, cheeks, chin, throat, and entire lower parts, delicate pale 

 ochraceous, or whitish cream-color ; a conspicuous " mustache," a 

 medial longitudinal series of streaks on the throat, with large 

 longitudinal ovate spots on sides of breast, cordate spots on sides 

 and flanks, and sagittate spots on tibiae, clear blackish-brown. 

 The ochraceous deepest on the abdomen and crissum. Wing 

 beneath as in adult. 



A very young bird, scarcely fledged (33,598, Milltown, Me. ; G. 

 A. Boardman), differs from the last in a much more continuous 

 black shade above, the deeper ochraceous beneath, and larger, as 

 well as more numerous, blackish spots beneath. 



Remarks In the adult plumage of this species, the principal 



variation is in the continuity or distinctness of the anterior light 

 band on the tail, and the extent and depth of shade of the brown 

 beneath. The first feature is characteristic of most specimens, only 

 one (55,980, % , Costa Rica) being without it; it is broadest and 

 most conspicuous, as well as less concealed hy the coverts, in the 

 females, and this appears to be the principal sexual difference. 

 The dull brownish-rufous of the under parts is most prevalent in a 

 specimen from Mirador, Mexico (30,895, ? ? September; Dr. Sar- 

 torius), in which specimen the breast is almost continuously of 

 this color, and the lower tail-coverts are strongly barred (or trans- 

 versely spotted) with the same ; the ground-color beneath is also 

 more ochraceous than in any other individual. In the Costa-Ilican 

 specimen (the one lacking the anterior tail-band), the brown beneath 

 is quite different from that of the others, being of a much more 

 ashy shade ; the lower tail-coverts are also immaculate. The 

 brown markings beneath are most sparse in 20,389, from Coban, 



