154 
NORTH AMERICAN BIRDS. 
with purplish gloss, the top of head streaked with rusty, the 
scapulars and interscapulars widely bordered by a brighter 
shade of the same; fore-neck and chest irregularly clouded 
with pale buff or soiled white and sooty plumbeous, the breast 
more coarsely clouded, with more or less of a blackish patch on 
each side. Winter plumage: Hardly distinguishable from corre- 
sponding stage of T. maritima, but lighter borders to feathers 
of upper parts of a clearer, more bluish plumbeous, and the 
grayish of the chest more varied or broken by white. Young: 
Scapulars and interscapulars conspicuously bordered with bright 
rusty, ochraceous, and whitish; wing-coverts broadly bordered 
with pale buff or whitish; breast and sides buffy white, streaked 
with dusky. Downy young: Above bright rusty fulvous, irreg- 
ularly marbled with black, the ornamental velvety flecks coarser 
and less purely white than in 7. maritima; head light fulvous, 
marked as in T. maritima; sides distinctly tinged with fulvous. 
Length 7.50-9.00, wing 4.50-5.15 (4.86), culmen .98-1.25 (1.13), 
tarsus .88-1.00 (.95). Eggs 1.46 x 1.00, pale olive-buff, varying 
to light brownish buff, spotted longitudinally, and somewhat 
spirally, with vandyke-brown, or deep umber, these darker 
markings sometimes prevailing over the ground-color. Hab. 
Aleutian Islands and coasts of Bering’s Sea, north to Kowak 
River, Alaska, west to Commander Islands, Kamtschatka. 
236. T. couesi Ripew. Aleutian Sandpiper. 
d@. Larger and lighter colored. Summer adult: Top of head broadly 
streaked with buff; scapulars and interscapulars widely bor- 
dered with bright ochraceous or ochraceous-rufous ; fore-neck 
and chest pure white, sparsely streaked with brownish gray ; 
breast white, streaked anteriorly and clouded posteriorly with 
dusky, the latter forming more or less of a patch on each side. 
Winter plumage: Above light plumbeous or ashy, the scapulars 
and interscapulars darker centrally and with paler borders; 
wing-coverts edged with pure white; chest with white pre- 
vailing. Young: Similar to corresponding stage of 7. couesi, 
but colors much paler, with light borders to feathers of back, 
etc., broader, the dark centres correspondingly decreased. 
Downy young: Similar to that of 7. couesi, but paler in color, 
the dark streaks on lores not reaching to the eye. Length 
about 9.50-10.00, wing 5.00-5.40 (5.16), culmen 1.15-1.45 (1.33), 
tarsus .95-1.00 (.98). Eggs 1.50 x 1.07, light brownish buff, 
heavily spotted with rich vandyke-brown and clouded with 
purplish gray. Hab. Prybilof Islands, Bering’s Sea; adjacent 
coast of Alaska, south of Norton Sound, in winter. 
237. T. ptilocnemis Cours. Prybilof Sandpiper. 
