192 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
maries dusky grayish brown, the latter abruptly white basally; shafts 
of primaries white, except terminally; primary coverts and distal 
primaries darker grayish brown or fuscous, the proximal coverts 
tipped with white; tertials dusky grayish brown to fuscous-black, 
irregularly edged with buffy or cinnamomeous, sometimes indistinctly 
spotted with grayish brown; lower back and rump plain dusky grayish 
brown or fuscous; anterior upper tail coverts, abruptly, white (usually 
immaculate), the posterior (longer) ones sooty black; tail sooty black 
or fuscous-black, margined terminally with white, abruptly white 
basally (except on middle rectrices), the white increasing in extent 
to the outermost rectrix, on which it occupies more than the basal half; 
under parts of body light russet or mikado brown, irregularly barred 
with dusky (the bars narrower and less distinct on median portions, 
broader and more nearly black on sides and flanks), some of the 
feathers, usually, narrowly tipped with white; anal region and under 
tail-coverts mixed white and light russet, barred with dusky, the bars 
broader on longer under tail-coverts; axillars uniform dark sooty 
‘brown or fuscous, the under wing-coverts similar but those along edge 
of wing margined with white and the outer webs of greater coverts 
white; bill dull yellowish (in life), darker on culmen, blackish termi- 
nally; iris dark brown; legs and feet dusky (light bluish gray in life). 
Adults in winter—Back and scapulars plain brownish gray or 
grayish brown, like wing-coverts; head and neck paler brownish gray, 
sometimes suffused with buffy whitish; under parts dull whitish or 
pale grayish buffy, shaded with brownish gray anteriorly; otherwise 
as in summer plumage. 
Young.—Back and scapulars dull brownish gray or grayish brown, 
the feathers margined terminally with buffy and with a submarginal 
crescent of dusky; under parts pale dull grayish buffy, the chest more 
grayish, the abdomen more whitish; otherwise much like winter 
adults. 
Adult male.—Wing, 196-210.5 (203.5); tail, 72-76 (74); exposed 
culmen, 69-92 (76.7); tarsus, 54-62 (57.5); middle toe, 31-35 (32.5).¢ 
Adult female—Wing, 203-222 (212.9); tail, 73.5-82 (77.9); ex- 
posed culmen, 67-88 (79.5); tarsus, 55-59.5 (58.1); middle toe, 
31-32 (81.7).% 
a Four specimens. 
Some of the specimens measured doubtless have the sex incorrectly determined. 
Fourteen males and four females measured (before skinning) by Mr. G. 8. Agersborg 
{see Bull. Nutt. Orn. Club, v, 1880, 60) show a decided sexual difference in size, the 
measurements (converted from inches and hundredths to millimeters) being as follows:— 
Males.—Length, 355.6-381 (average, 371.8); extent of wings, 622.3-660.4 (639.3); 
tail, 76.2-88.9 (82); bill [exposed culmen?], 71.1-81.3 (74.9); tarsus, 55.9-59.7 (57.1); 
weight, 74-8 ounces. 
Females.—Length, 393.7-419.1 (407.9); extent of wings (one specimen only), 673.1; 
tail, 81.3-88.9 (85.3); bill [exposed culmen?], 86.4-90.2 (87.4); tarsus, 62.2-64.8 (63.2); 
weight, 9-94 ounces. 
