16 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



Adult female.— Wmg 425-475 (446.7) ; tail 150-165 (159.2) ; ex- 

 posed culmen 82-93 (90.4) ; tarsus 21-26 (23.2) ; middle toe without 

 claw 65-72 (68.6 mm.)." 



Range. — Breeds from northeastern Siberia (Semiavine Strait; 

 Providence Bay; East Cape; Anadyr Bay; Cape Tschukoso and 

 probably Koljuchin Bay, Cape Bolschoi Baranowski, Balaga; and 

 Sebddij Strait) ; northern Alaska (Point Barrow; Humphrey Point; 

 Kotzebue Sound; Colville River; Circle; St. Michael; St. Lawrence 

 Island ; Cape Prince of "Wales ; Wainwright ; Mint Eiver, etc.) ; north- 

 ern Mackenzie (Franklin and Liverpool Bays; delta of the Mackenzie 

 River; and probably Cape Kellett, Banks Island) ; to Melville Sound; 

 the Boothia Peninsula; Igloolik; Baffin Island (Cape Graham Moore 

 and Ponds Inlet), south in Alaska to Hooper Bay; Wrangell; 

 Mushagak, Stikine Flats; Cook Inlet; and Aleutian Chain — ^Attu 

 Island; central Mackenzie (Fort Resolution, Great Slave Lake, and 

 Nyarling River) ; and eastern Keewatin (Southampton Island; near 

 Cape Eskimo). 



Winters from the southern half of California (San Joaquin Val- 

 ley; San Rafael; Los Angeles County; Colorado River) ; and southern 

 Texas (San Patricio; Corpus Christi; Chiltipin Creek; Brownsville, 

 etc.) to northern Lower California (Colorado delta region; Laguna 

 Salada ; near Cerro Prieto) ; and to the mainland of Mexico (San Luis 

 Potosi — Rio Verde; Guanajuato — Silao; Jalisco — Ocotlan). 



Casual in Prince Edward Island (Alexander and Eamscliffe) ; 

 Rhode Island (Natick) and South Carolina (Mount Pleasant) ; the 

 Commander Islands and Japan. 



Accidental in Ireland (Clonakilly, Cork County; possibly an 

 escaped cagebird). 



Type locality. — North America = Hudson Bay. 



[Ardeal canadensis Linnaeus, Syst. Nat., ed. 10, i, 1758, 141 (North America; 

 based on Orus fusca canadensis Edwards, Nat. Hist., 1750, pi. 133; Gfru« 

 Preti Hudsmis Brisson, Orn., v, 1760, 386) ; ed. 12, i, 1766, 234.— Gmeun, 

 Syst. Nat., i, pt. 2, 1789, 620.— Latham, Index Orn., ii, 1790, 675. 



Ardea . . . canadensis Fobstes!, Philos. Traos., Ixii, 1772, 409 (Severn Kiver, 

 Keewatin). 



Ardea canadensis Phttees, Auk, xlii, 1925, 120 (crlt. ; syn. ; tax.) . 



Orus canadensis Stephens, Shaw's Gen. Zool., xi, pt. 2, 1819, 526. — Temminck, 

 Man. d'Orn., i, 1820, introd., c. — Bonapaete, Ann. Lye. Nat. Hist. New York, 

 ii, 1828, 302 ; Synopsis, 1828, No. 225. — Sabine, Franklin's Journ., 1823, 685.— 

 Kichardson, Parry's Second Voy., 1825, 350, No. 14 (Hudson Straits).— 

 SwAiNSON and Richardson, Fauna Bor.-Amer., Ii, 1831, 373, part. — Sclateb, 

 Proc. Zool. Soc. London, 1860, 418 (Fort Churchill, Keewatin). — Blakiston, 

 Ibis, 1862, 8 (Saskatchewan). — Daix and Bannistee, Trans. Chicago Acad. 

 Sci., i, 1869, 289 (St. Michael, Alaska). — Taczanowski, Journ. fiir Orn. 



?Ten specimens from Alaska, Northwest Territories, Alberta, North Dakota, 

 Nebraska, and Texas. 



