178 BULLETIN 142, UNITED STATES NATIONAL MUSEUM 



Breeding range. — The pectoral sandpiper breeds mainly on the 

 Arctic coasts of Alaska and Mackenzie. North to Siberia (Kolyma 

 Delta) ; Alaska (Cape Lisburne, Cape Smythe, Point Barrow, Col- 

 ville delta, Collinson Point, Barter Island, and Demarcation Point) ; 

 Yukon (Herschel Island) ; northeastern Mackenzie (Cambridge 

 Bay) ; and northeastern Manitoba (York Factory). East to north- 

 eastern Manitoba (York Factory). South to Manitoba (York Fac- 

 tory) ; Mackenzie (Clinton-Colden Lake and Lac de Gras) ; and 

 Alaska (Tacotna Forks and Hooper Bay). West to Alaska (Hooper 

 Bay, Fort Clarence, Point Hope, and Cape Lisburne) ; and north- 

 eastern Siberia (Kolyma Delta). It has also been reported in sum- 

 mer at Fort Anderson and Bernard Harbor, Mackenzie, and in 

 northwestern Greenland (Cape Hatherton). 



Summer occurrence outside the range above outlined are Keewatin 

 (Cape Eskimo) ; Manitoba (Button Bay) ; southwestern Alaska 

 (Nushagak) ; and northeastern Siberia (Cape Serdze, and Nijni 

 Kolymsk). 



Winter range. — South America. North to Ecuador (near Quito) ; 

 Bolivia (Falls of the Madeira, San Luis, and Caiza) ; and Paraguay 

 (Colonia Risso). East to Uruguay (Santa Elena) ; and Argentina 

 (Buenos Aires, La Plata, Barracas, Chubut Valley, Port Desire, 

 and Colonia Rouquand). South and west to Argentina (Colonia 

 Rouquand). West also to Chile ''Santiago, LIuasco, Antofagasta, 

 Atacama, and Tarapaca) ; Peru (Chorillos and Junin) ; and Ecuador 

 (near Quito). 



Spring migration. — Early dates of arrival are : Florida, Fort De 

 Soto, February 22, and Orange Hammock, February 25; Alabama, 

 Greensboro, March 20 ; South Carolina, Frogmore, March 20 ; North 

 Carolina, Raleigh, March 21; District of Columbia, Washington, 

 March 26; Pennsylvania, Carlisle, March 28, Beaver, April 1, and 

 Harrisburg, April 7; New York, Canandaigua, April 14, Buffalo, 

 April 18, Gaines, May 5, and Orient, May 7 ; Massachusetts, Thomp- 

 son's Island, March 30, Monomoy Island, April 11, and Dennis, April 

 16; Maine, Scarboro, April 13; Quebec, Quebec, May 2; Louisiana, 

 Lake Borgne, March 12, New Orleans, March 18, and Baton Rouge 

 Parish, March 19; Mississippi, Biloxi, February 28; Arkansas, Glen- 

 wood, March 27; Kentucky, Bowling Green, April 29; Missouri, St. 

 Louis, March 2, Warrenburg, March 11, Fayette, March 16, and Inde- 

 pendence, March 18; Illinois, Englewood, March 9, Rantoul, March 

 14, Mount Carmel, March 15, Canton, March 26, and Chicago, 

 March 29; Indiana, Bloomington, March 15, Terre Haute, March 

 17, Bicknell, March 18, and Greencastle, March 22 ; Ohio, Columbus, 

 March 1, New Bremen, March 24, Columbus, March 25, Oberlin, 

 March 25, Cincinnati, March 28, and Youngstown, March 31; 

 Michigan, Ann Arbor, April 8, and Detroit, April 12; Ontario, 



