572 CHAEADRIIDiB. 



marks of dusky brown ; tail uniform dusky brown, the two centre 

 feathers rather darker brown than the remainder, all of which have 

 whitish shafts ; wing-coverts brown with sandy isabelline edgings, 

 the greater series darker and margined with white ; bastard-wing 

 and primary-coverts blackish ; quills light brown, the primaries 

 darker at the tips of the inner webs and along the outer webs ; the 

 secondaries slightly fringed with white, the inner ones more 

 distinctly towards the outer webs, the shafts of the quills 

 whitish, those of some of the primaries being browner ; the inner- 

 most secondaries brown, with light edgings like the back ; crown of 

 head brown, mottled with dark centres to the feathers ; the hind- 

 neck more isabelline ashy and the spots duller ; base of forehead 

 and eyebrow white ; a dusky loral streak ; ear-coverts ashy-whitish 

 minutely spotted with brown ; cheeks and under surface of body 

 pure white ; the fore-neck and chest sandy isabelline, minutely 

 spotted with dusky centres to the feathers, in the form of streaks or 

 spots ; the sides of the body white and uniform, the thighs slightly 

 tinged with sandy buff; axillaries and under wing-coverts white, 

 those near the edge of the wing with dusky bases : " bill black ; 

 legs and feet slate-black; iris dark brown" (H. Ridgway). Total 

 length 6-5 inches, culmen 1-95, wing 4 - 7, tail 1-7, tarsus 0-8. 



Adult male in breeding -plumage. Very much more sandy than in 

 the winter plumage, and varied with black bases to the feathers, 

 which give a distinctly mottled appearance ; the rump and upper 

 tail-coverts distinctly blackish with sandy-coloured margins ; the 

 tail and wings as in the winter plumage, except that the innermost 

 secondaries have sandy-buff edgings ; head like the back, sandy 

 isabelline with dusky centres to the feathers ; remainder of the 

 plumage as in winter, but with considerably more sandy colour on 

 the neck-band, where the small "streaks and lines are very distinct. 

 Total length 6-5 inches, culmen - 9, wing 5, tail 2, tarsus - 9. 



Adult female. Similar to the male. Total length 6 - 5 inches, 

 wing 5 - 2. 



Young. Similar to the summer plumage of the adults, but not 

 quite so sandy-coloured, the feathers being mostly fringed with 

 whitish ; the lower throat and fore-neck sandy-coloured, with very 

 few of the narrow streaks which characterize the plumage of the 

 adults. 



Hab. Interior of North America, from Alaska southwards 

 through Canada and the Central United States to Mexico, thence 

 south through Western South America from Colombia to Chili. 

 Accidental in Damara Land, S.W. Africa. 



a. $ ad. sk. North America. Seebohm Coll. 



b. Ad. sk. N.W. America. Capt. Collinson [P.]. 



c. Juv. sk. Alaska (E. W. Kelson : Hen- Salvin-Godman Coll. 



shaw Coll.). 



d. 2 a d- sk. Point Barrow, Alaska, June 20 Salvin-Godman Coll. 



(J. Murdoch: Henshaiv Coll.). 



e. Ad. sk. Fort Rae, Great Slave Lake, Salvin-Godman Coll. 



June 8 (L. Clarke). 

 f,9- 6 ? juv. sk. Fort Simpson, July. B. R. Ross, Esq. [P.]. 



