664 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Adult male.—Wing, 265-286 (277.2); tail, 114.5-130 (122.4); 
exposed culmen, 25.5-28.5 -(27.4); tarsus, 31.5-34.5 (33.1); middle 
toe, 26.5-28.5 (27.3).% 
Adult female.—Wing, 260-276 (267.5); tail, 111-114.5 (112.2); 
exposed culmen, 25-27 (26.2); tarsus, 30-32 (31.5); middle toe, 
25.5-28 (26.6).° 
Breeding on Bering Sea coast of Alaska, from mouth of Kuskoquim 
River (from Bristol Bay?) to St. Michaels, on St. Lawrence Island in 
Bering Sea, along coast of Mackenzie (Franklin Bay; Liverpool Bay; 
Point Dalhousie), at Cambridge Bay, Victoria Land, Southampton 
Island in northern portion of Hudson Bay, on western coast of 
Greenland, from Melville Bay to Thank God Harbor, lat. 81° 40’ N., 
and on Taimyr Peninsula, Siberia; occurring in summer, but not 
known to breed, on Grinnell Land, Melville Peninsula, Prince Regents 
Inlet, Polaris Bay, Point Barrow, Spitzbergen, Jan Mayen Land, 
Lena Delta and Novo Marinsk (Siberia), Davis Strait, Ungava Bay 
(July, 1884), and other arctic and subarctic localities; migrating 
southward over greater part of United States (irregularly and locally) ,° 
as far as coast of Texas (Corpus Christi, Oct.), but chiefly on Pacific 
coast, as far as Peru (Tumbez; San Lorenzo; Callao Bay), where 
common from December to April, but not recorded from any locality 
on the Atlantic or Gulf coasts of the United States between Long 
Island, New York, and Texas, nor from any part of Mexico, Central 
America, or the West Indies, except Lower California (San Quintin, 
Aug. 14, 1905); accidental in Bermudas (1 specimen, date unrecorded, 
@ Nine specimens. 
b Four specimens. 
¢ United States records are as follows: Maine (Bluff Island, Saco Bay, Sept. 11, 1912; 
near Calais, spring of 1878; Scarborough, May 31, 1897; near Portland, Sept. 22, 1899) — 
Massachusetts (Chatham, 2 specimens, Sept. 2, 1912; Boston Harbor, Sept. 27, 1874; 
Cape Cod, Aug. 21, 1869; North Truro, Aug. 21, 1889).—New York (Gardiners Bay, 
Long Island, Oct. 7, 1899; Raynor South, Long Island, July, 1837; Cayuga County, 
about 1887).—Ohio (Cleveland).—Michigan (Ann Arbor, Nov. 17, 1880).—Wisconsin 
(Delavan Lake, Oct. 7, 1900).—Illinois (Lake Michigan, near Chicago, April 1, 1873; 
Warsaw, Sept. 15, 1900; opposite Clark County, Missouri, Sept., 1900).—Iowa (Burling- 
ton, Oct. 15, 1891 and Oct, 12, 1899).—Nebraska (Beatrice, Sept. 2, 1899; Lincoln, 
Sept. 30, 1899).—Kansas (Humboldt, Sept. 21, 1876; Hamilton, Greenwood County, Oct. 
3, 1899).—Oklahoma (Big Lake, near Claremont, Nov., 1910).—Texas (Corpus Christi, 
Oct.).—New Mexico (near Albuquerque, Oct. 7, 1900).—Colorado (Denver; Loveland; 
near Breckenridge, 10,000 feet altitude, Sept. 26, 1886; Manitou Park, Oct. 10, 1899; 
near Boulder, Sept. 15, 1907; Fort Collins),—Utah (Ogden, Sept. 28, 1871).—Montana 
(Terry, several, Sept. 22, 23, 1904).—Oregon (Corvallis, Sept. 19, 1908, Sept. 14, 1909).— 
Washington (Sea Island, Shoalwater Bay, Sept. 24, 1897).—California (San Francisco 
Bay, Oct., 1839; Monterey Bay, Oct., 1889, Oct. 5, 1890, Aug. 23, 1894, May 12 and 
15-21, 1897, Oct. 5, 8, 1899, Apr. 9, 1903, May 15-21, July 22, about 50 seen, and Oct. 
28, 1907; Oct. 6, 1909; San Diego, May 15, 1905; Santa Cruz Island, Aug. 6, 1909; 
near Los Coronados Islands, Aug. 20, 1910; Santa Barbara Channel, Aug. 11, 1912, 
Aug. 1, 4, 7, 1913, flock; Mono Lake, Sept. 18, 1891.) 
