66-4 BULLETIN 50, UNITED STATES NATIONAL MUSEUM, 



Adult 7nale.— -Wing, 265-286 (277.2); tail, 114.5-130 (122.4); 

 exposed ou'lmen, 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 Dalliousie), 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 smumer, 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 Marmsk (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 Chris ti, Oct.), but chiefly on Pacific 

 coast, as far as Peru (Tumbez; San Lorenzo; CaUao 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 Qumtin, 

 Aug. 14, 1905); accidental in Bermudas (1 specimen, date unrecorded, 



« Nine specimens. 



b Four specimens. 



c United States records are as follows: Maine (Bluff Island, Saco Bay, Sept. II, 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; o[)posite Clark County, Missouri, Sept., 1900). — Iowa (Burling- 

 ton, Oct. 15, 1801 and Oct. 12, 1899).— Nebraska (Beatrice, Sept. 2, 1899; Lincoln, 

 Sept. 30, 1899).— Kansas (Humboldt, Sept. 21, 187G; 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., 1889; Monterey Bay, Oct., 1889, Oc-t. 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; Sant^ 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.) 



