104 CPIECK-LIST OF NORTH AMERICAN BIRDS. 



Subgenus CIRREPIDESMUS Bonaparte. 



Cirrepides?nus Bonaparte, Comptes Rendus Acad. Sci. (Paris), XLIII, 

 No. 8 (for Aug. 25), 1856, 417. Type, by tautonymy, Charadrius 

 pyrrhothorax Gould = C. atrifrons Wagler. (C. cirrhepidesmus Wag- 

 LER quoted as a synonym.) 



• Charadrius mongolus mongolus Pallas. Mongolian Plover. [279.] 



Charadrius mongolus Pallas, Reise Russ. Reichs, III, 1776, 700. (circa 

 lacus salsos versus Mongoliae fines = Kulussutai, probably on the 

 Onon River, Siberia.) 



Range. — Breeds in northeastern Siberia and the Commander Islands. 

 Winters from the Philippines to Australia. Casual in Alaska (Cape Prince of 

 Wales, June 11, 1922; i Nunivak Island-). [A closely allied race occurs in 

 central Asia.] 



Subgenus LEUCOPOLIUS Bonaparte. 



Leucopolius Bonaparte, Comptes Rendus Acad. Sci. (Paris), XLIII, No. 

 8 (for Aug. 25), 1856, 417. Type, by tautonymy, Charadrius marginatus 

 Vieillot. (C. leucopolius Wagler quoted as a synonym.) 



Charadrius nivosus nivosus (Cassin) . Western Snowy Plover. [278.] 



Aegialiiis nivosa Cassin, in Baird, Cassin, and Lavv'rence, Rep. Expl. 

 and Surv. R. R. Pac, IX, 1858, xlvi, 696. (Presidio [near San Fran- 

 cisco], California.) 



Range. — Breeds from Washington, northern California, and northern 

 Utah south to southern Lower California. Winters from central California 

 south along the Pacific coast to Mexico. 



Charadrius nivosus tenuirostris (Lawrence). Cuban Snowy Plover. [27Sa.] 



Aegialiiis tenuirostris Lawrence, Ann. Lye. Nat. Hist. N. Y., VII, 1862, 

 455. (Near Guantanamo, Cuba.) 



Range. — Breeds on the Gulf coast from Florida to Texas and apparently in 

 Haiti and Porto Rico; also on salt plains in Oklahoma and Kansas. South in 

 winter to the Bahamas, Cuba, Haiti, Porto Rico, Yucatan, and Venezuela 

 (Margarita Island). Casual near Toronto, Ontario. 



[An additional race of C. nivosus occurs in Chile and Peru.] 



Subgenus AEGIALEUS Reichenbach. 



Aegialeus Reichenbach, Avium Syst. Nat., 1852 [1853], xviii. Type, by 

 monotypy, Charadrius semipalmatus Bonaparte. 



1 Bailey, Condor, XXVIII, 1926, 85. 



"Swarth, Proc. Calif. Acad. Sci., XVII, 1928, 247. 



