108 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
without claw, about one-fourth as long as wing, slender, the acrotar- 
sium with rather indistinct transverse scutella (some of which, how- 
ever, are broken into smaller hexagonal scales), the planta tarsi with 
smaller and much less distinct transverse scutella; outer toe decidedly 
shorter than middle toe but decidedly longer than inner toe; hallux 
absent; a small web between basal phalanges of outer and middle toes, 
but none between inner and middle toes; claws small, nearly straight. 
Coloration.—Under parts immaculate white, interrupted by a jugu- 
lar band of black (adult male) or grayish brown or cinnamon (adult 
female and young); forehead and superciliary stripe white; loral stripe 
and forepart of crown black (adult male) or grayish brown (female and 
young) ; rest of upper parts grayish brown, the primaries, etc., darker. 
Range.—Atlantic and Gulf coasts of United States and northern 
South America; West Indies; Pacific coast of Mexico. (Monotypic.) 
KEY TO THE SUBSPECIES OF PAGOLLA WILSONIA. 
a. Black or brown loral stripe narrower, continued very narrowly beneath eye, not 
involving anterior portion of forehead or of malar region; white frontal band 
Groader, and white supra-auricular area distinct; color of upper parts lighter; 
middle toe 18-20 mm. 
b. Adult female with pileum, subauricular region and jugular band grayish brown. 
(Atlantic and Gulf coasts of United States; West Indies.) 
Pagolla wilsonia wilsonia ((p. 108). 
bb. Adult female with pileum, subauricular region and jugular band cinnamon or 
sayal brown. (Carribbean coast of Colombia and Venezuela.) 
Pagolla wilsonia cinnamomina (p. 113). 
aa. Black or brown loral stripe much broader, continued broadly beneath eye, and 
involving anterior portion of forehead and malar region; white frontal band nar- 
rower, and white supra-auricular area indistinct or obsolete; color of upper 
parts darker; middle toe 17.5-18 mm. (Pacific coast of Mexico.) 
Pagolla wilsonia beldingi (p. 112). 
PAGOLLA WILSONIA WILSONIA (Ord). 
WILSON’S PLOVER. 
Adult male in summer.—Forehead (backward laterally to above- 
eyes), sides of rump, lateral upper tail-coverts, and under parts, 
including axillars and under wing-coverts white, on the under parts 
interrupted by a band of black across chest; loral stripe (from bill to 
eye) and anterior portion of crown black; rest of upper parts grayish 
brown, the greater wing-coverts narrowly tipped with white, the 
auricular and supra-auricular regions and nape sométimes more or less 
tinged with cinnamon-rufous or rusty; primaries dusky, the outer- 
most with shaft white, the shafts of the others partly white, the prox- 
imal ones with a little white on basal portion of outer webs; tail 
rather light grayish brown becoming darker subterminally and 
whitish at tip, the general color becoming gradually paler from the 
middle rectrices to the outer pair, which are wholly white; bill 
black; iris dark brown; eyelid grayish; legs and feet pale grayish flesh 
color (in life). 
