412 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
aa. Tarsus not distinctly, if at all, transversely scutellate behind; ground color of : 
axillars and under wing-coverts cinnamon-buff. (Northern North America, 
migrating to West Indies, Central America, and South America.) 
Mesoscolopax borealis (p. 412), 
MESOSCOLOPAX BOREALIS (Forster). 
ESKIMO CURLEW. 
Adults in breeding season (sexes alike).—Pileum sooty black, 
more or less streaked with pale buffy, especially along median line; 
a broad superciliary stripe of pale buffy narrowly streaked with 
blackish, especially on supra-auricular portion; lores rather thickly 
speckled, flecked, or streaked with blackish, forming a more or less 
distinct cuneate patch between bill and eye; a blackish or fuscous 
postocular streak (along upper edge of auriculars); interscapulars 
sooty black, broadly edged (laterally) and spotted along edges with 
dull buff, the scapulars similar but with the buffy spots along edges 
larger; lesser wing-coverts sometimes nearly uniform sooty blackish 
or dark fuscous, sometimes margined (at least in part) with dull 
buffy; middle coverts dusky grayish brown or fuscous centrally, 
broadly margined or marginally spotted with buffy, the greater 
coverts lighter grayish brown, more narrowly margined with buffy; 
secondaries still lighter grayish brown, narrowly margined with very 
pale buffy or buffy whitish; tertials dusky grayish brown or fuscous, 
deeply notched with light dull buffy, or with broad angular spots 
of the same along edges; primary coverts and primaries dusky 
grayish brown or fuscous, the proximal coverts and quills narrowly 
margined terminally with whitish; lower back and rump dark fuscous 
spotted with buff, the upper tail-coverts similar but with buff spots 
‘larger and paler and on the longer coverts forming interrupted broad 
bars; tail light grayish brown or brownish gray, sometimes tinged 
with cinnamon on lateral rectrices, distinctly barred with dark 
fuscous, and narrowly tipped with paler; chin, throat, and anterior 
portion of malar region immaculate buffy white; rest of head and 
neck (except as described) and under parts dull buff (between 
pinkish buff and vinaceous-buff), the lower breast, abdomen, and anal 
region usually immaculate or nearly so, the sides-of head and neck, 
foreneck, chest, and upper breast narrowly streaked with fuscous, 
the sides with V-shaped markings, the flanks with irregular, rather 
broad, bars, the lateral and longer under tail-coverts with a few small 
streaks and spots of the same; axillars and under wing-coverts 
cinnamon-buff, the former with narrow V-shaped bars, the latter 
with rather sparse irregular spots, bars, and streaks of fuscous; 
inner webs of primaries wholly uniform grayish brown, or with an 
indistinct edging or marginal mottling of pale cinnamon-buffy; bill 
blackish, the basal portion of mandible brownish; iris dark brown; 
legs and feet dusky (dull slate color or dark gray in life). 
