308 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



CALIDRIS ALBA (Pallas). 



SANDEELING. 



Adults in summer (sexes alike). — Pileum and hindneck pale rusty 

 or cinnamon-rufous, intermixed, more or less,'^ with grayish white, 

 rather broadly streaked with black or dusky; scapulars and inter- 

 scapulars black centrally, broadly margined with light cinnamon- 

 rufous or rusty and very pale gray or grayish white j*^ anterior lesser 

 wing-coverts (especially near bend of wing) nearly uniform dusky, the 

 remaining lesser coverts and middle coverts dusky centrally, broadly 

 margined terminally with white, the greater coverts grayish brown 

 or brownish gray, paler along edges and very broadly tipped with 

 white; secondaries immaculate white for basal half or more, the 

 distal portion dusky margined terminally with white; primary 

 coverts and primaries dusky, the former rather broadly tipped with 

 white (except the longer or distal ones), the proximal (inner) pri- 

 maries with basal half or more of outer webs white; tertials brownish 

 gray narrowly margined with white and v/ith blackish shafts; rump 

 and shorter (anterior) median upper tail-coverts brownish gray, the 

 feathers darker centrally and broadly margined with pale gray and 

 grayish white, the lateral upper tail-coverts immaculate white; longer 

 (posterior) median upper tail-coverts and middle pair of rectrices 

 dusky narrowly margined with pale gray or grayish white, the re- 

 maining rectrices light grayish brown narrowly margined with 

 whitish, the outermost pair paler and with considerable of white on 

 outer web; sides of head and neck pale rusty or cinnamon-rufous, 

 more or less intermixed with white, streaked and flecked with dusky, 

 the foreneck and chest similar, but spotted and barred rather than 

 streaked; chin, throat, and under parts of body immaculate white, 

 the sides of breast, however, suffused with rusty or cinnamomeous 

 and irregularly barred or transversely spotted with dusky; axillars 

 and most of under wing-coverts immaculate white; bill, legs, and 

 feet black; iris dark brown. 



Winter ylumage. — Above pale gray (the anterior lesser wing- 

 coverts dusky) relieved by narrow shaft-ptreaks of dusky; under 

 parts wholly immaculate white; otherwise as in summer. 



Young. — Above pale grayish, spotted with blackish and whitish, 

 the latter on tips of the feathers; otherwise like winter plumage, but 

 chest more or less tinged with dull buff. 



Adult male.— Y\'mg, 113-124.5 (119.1); tail, 45-55 (50.3); exposed 

 culmen, 23-26 (24.7); tarsus, 23-25 (23.7); middle toe, 14.5-16 

 (15.5).'' 



« Earlier in the season the pale gray or grayish white predominates, the rusty or 

 cinnamon-rufous increasing toward midsummer. 

 & Fourteen specimens. 



