BIRDS OF NORTH AND MIDDLE AMERICA. 137 
Young.—Similar to the winter plumage, but feathers of upper parts 
rgined terminally with whitish or buffy whitish. 
Jowny young.—Upper parts very pale grayish buff, interrupted by 
white nuchal collar, the whole colored portion rather sparsely 
ttled or irregularly spotted with black; forehead, hand-wing, and 
ler parts immaculate white; a dusky postocular streak. 
Adult male—Wing, 101-108 (104.2); tail, 42-47 (44.9); culmen, 
5-16 (15.1); tarsus, 22.5-25 (23.9); middle toe, 14-15.5 (14.7).% 
Adult female.—Wing, 100-105.5 (102.6); tail, 42-44 (43.4); cul- 
n, 13.5-15.5 (14.6); tarsus, 22-23.5 (22.9); middle toe, 13.5-15 
b.4).6 
Breeding in western United States from Pacific Coast to Salt Lake 
lley, Utah (to south-central Kansas?), north to central California, 
ith to northern Lower California; wintering from southern Cali- 
nia southward along Pacific coast of Mexico (Mazatlan, Sinaloa), 
ntral America (Costa Rica) and South America to Peru (Chorillos; 
mbo Valley, Oct., Nov.) and Chile (Cavanche, May, Oct., Dec.; 
Iparaiso; Coquimbo, Straits Magellan, June); casual or occasional 
Oregon, Washington (Grays ia and Wyoming?. (Acci- 
otal on Kadiak Island, Alaska ?) 
@ Nine specimens, b Seven specimens. 
, ‘ F Cul- Middle 
Locality. Wing. | Tail. man’ Tarsus. t06: 
MALES, 
ir adult males from California. .............-.022e ee eee eee ee 103.1 43.7 14.7 23.6 14.7 
) adult males from southern Lower California.............. 104 45.6 15.5 23.7 14 
:adult male from Sonora (migrant) 108 45.5 15.5 24.5 15 
adult males from Utah 104.5 46 15 24.5 15.2 
yadult male from Yucatan (C. n. tenuirostris) 99 37 14.5 23 14 
yadult male from Margarite I., Venezuela (C. n. tenuirostris).| 99 42 15 22.5 14.5 
:adult male from Mississippi (C. n. tenuirostris)............ 102 46 13 25 15 
adult males from Alabama (C. n. tenuirostris)...........- 106.1 47.1 15 24. 2 14.2 
radult males of C. alerandrinus.........2-22..000 cece eeeee 109 46.5 16.7 26.7 15.7 
FEMALES 
r adult females from California............22222-...200ee005 103. 6 43.5 14.5 22.7 14,4 
» adult females from southern Lower California............ 101.5 44 15.2 23.2 14.5 
adult female front Utah swicawo scans, cesses ete arcane 101 42 VA: |esevisaweleeseeees 
adult female from Mississippi (C. ”. tenuirostris).......... 98 41 14 23.5 14 
adult female from Alabama (C. n. tenwirostris),.......-... 104 47 14 23 14 
adult female from Florida (C. n. tenuirostris)............-- 104 44,5 15 23 13.5 
»9 adult females of C. alerandrinus. ......0...00eeee eee eee 108 46.7 15.5 26. 2 15.5 
feasurements of C. alexandrinus (Charadrius alexandrinus Linneus; C. cantianus 
ham) are given for comparison, this being the Old World representative of C. 
sus. Besides having longer wings, relatively shorter tail, and decidedly longer 
iand toes than C. nivosus, C. alecandrinus has a black loral stripe and other differ- 
es of coloration. 
