80 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
but distinct web between basal phalanges of outer and middle toes 
and a much smaller one between inner and middle toes. 
Coloration.—Upper parts speckled or dotted with yellowish on a 
dusky ground; summer adults with sides of head and most of under 
parts uniform black, the forehead, superciliary region, sides of neck, 
and sides of chest white. 
Range.—Northern portion of northern hemisphere, south in winter 
to Chile, Argentina, Australia, etc. (Two species.) 
KEY TO THE SPECIES AND SUBSPECIES OF PLUVIALIS. 
a, Axillars and under wing-coverts white. (Europe and western Asia, south in winter 
to northern Africa, northern India, etc.; casual in Greenland.) ................ 
Pluvialis apricarius (p. 80). 
aa. Axillars and under wing-coverts brownish gray. (Pluvialis dominicus.) 
b. Wings and tail averaging decidedly longer, bill, tarsi and toes slightly shorter, 
upper parts with less conspicuous yellow spotting, especially in winter plumage 
and young; adult male averaging: Wing, 176.4; tail, 67.9; culmen, 22.2; tarsus. 
41.9; middle toé, 22.9; adult female, wing 180.8, tail 66, culmen 22.5, tarsus 43, 
middle toe, 23.9. (Arctic coast of North America, south in winter to southern 
South America)............-.-..---6- Pluvialis dominicus dominicus (p. 83), 
bb. Wings and tail averaging decidedly shorter, bill, tarsi and toes averaging slightly 
longer; upper parts more conspicuously spotted with yellow, especially in 
winter plumage and young; adult male averaging: Wing, 165.9; tail, 63.6; 
culmen, 23.4; tarsus, 42.9; middle toe, 23.1; adult female, wing 167.2, tail 
62.5, culmen 23.2, tarsus, 43.3, middle toe 24.1, (Northeastern Siberia and 
Alaskan coast of Bering Sea, south in winter to Hawaiian Islands and other 
islands throughout Pacific Ocean to New Zealand, Australia, etc.).......... 
Pluvialis dominicus fulvus (p. 88). 
PLUVIALIS APRICARIUS (Linneus). 
GOLDEN PLOVER. 
Adults wm breeding plumage (sexes alike).—Upper parts dusky, 
speckled with bright ochre-yellow, this on scapulars and larger wing- 
coverts assuming the form of bars extending notch-like from margins 
of outer webs toward shafts; anterior lesser coverts deep grayish 
brown, with yellowish markings less distinct; alula, primary coverts, 
and primaries dusky, narrowly margined at tips with whitish; tail 
grayish brown, barred with pale yellow and pale grayish brown, the 
lateral rectrices with the pale bars becoming whitish externally; 
sides of head (including whole of loral and auricular regions), chin, 
throat, foreneck, chest, breast and abdomen uniform dull black, 
broadly margined laterally by white from (and including) forehead 
and superciliary region down sides of neck to sides of chest; under 
tail-coverts white, spotted or otherwise marked with black toward 
anal region; axillars immaculate white; under wing-coverts white, 
spotted with grayish brown toward edge of wing; bill black; iris dark 
brown; legs and feet grayish black. 
