134 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Adult male.—Wing, 123-139 (131.4); tail, 48-55.5 (52.6); culmen, 
15-17.5 (16.1); tarsus, 28-34 (30.1); middle toe, 17-19 (18.2).¢ 
Adult female.—Wing. 126-152.5 (133.6); tail, 49-56 (52); culmen, 
14.5-18.5 (16.2); tarsus, 28.5-31 (29 4); middle toe, 18-20.5 (18.8).° 
Breeding in northeastern Siberia and Commander Islands, Kam- 
chatka; migrating southward through Korea, Japan, China, Philip- 
pine Islands, Malay Archipelago, etc., to New Guinea and northern 
Australia; accidental in western Alaska (Choris Peninsula, summer). 
Charadrius mongolus Pattas, Reis. Russ. Reichs, iii, 1776, 700 (Kulussutai, 
probably on the Onon River, Siberia).—BonnaTeRRE, Tabl. Enc. Méth., 
i, 1790, 22.—Vizmxot, Nouv. Dict. d’Hist. Nat., xxvii, 1818, 143.—Brasrvs, 
Journ. fiir Orn., 1883, 126 (Celebes).—Hernrors, Journ. fiir Orn., 1902, 400 
(Bismarck Archipelago) —Matuews, Birds Australia, iii, 1913, pl. [135) 
facing p. 92.—Brooxs (W. 8.), Bull. Mus. Comp. Zool., lix, 1915, 378 (Cop- 
per Island, Kamchatka, June). 
[Charadrius] mongolus GuEuin, Syst. Nat., i, pt. ii, 1789, 685.—Laraam, Index 
Orn., ii, 1790, 746. 
Hiaticula mongola Goutp, Birds Australia, vi, 1846, pl. 19, right-hand fig., and 
text.—RerrcHENBAcH, Vég. Neuholl., 1851, no. 331.—Maceruivray, Nerr. 
Voy. ‘Rattlesnake’, ti, 1852, 358 (n. e. coast Australia; Torres Straits). 
[Pluviorhynchus] mongolus Bonararte, Compt. Rend., xliii, 1856, 417. 
Zigialites mongolus SwinHOE, Proc. Zool. Soc. Lond., 1870, 140 (s. China; Hainan; 
crit.); 1871, 404 (China); Ibis, 1873, 425 (Shanghai, China). ; 
Hyialitis mongola WatvEn, Ibis, 1873, 317 (South Andaman Island).—SrzsnecEr, 
Bull. U.S. Nat. Mus., no. 29, 1885, 105-108 (Commander Islands, Kamchatka; 
synonymy, descr., etc.); Proc. U. S. Nat. Mus., x, 1887, 126-128, pl. 7, figs. 
3-6 (variations in head-markings); xxi, 1898, 279 (Kuril Islands).—AmERicaNn 
OrnirHoLoaists’ Unton, Check List, 1886, and 2d ed., 1895, no. 279; 3rded., 
1910, 129.—Netson, Rep. N. H. Coll. Alaska, 1887, 127 (Choris Peninsula, 
Alaska; descr.).—TaczanowskI, Proc. Zool. Soc. Lond., 1888, 456 (Chemulpo 
Korea).—Ettiot, N. Am. Shore Birds, 1895, 189, pl. 64.—AztEN, Bull, 
Am. Mus. N. H., xxi, 1905, 241 (Gichiga, n. e. Siberia) —Cuarxk (A. H.), 
Proc. U. S. Nat. Mus., xxxviii, 1910, 155 (Gensan, Korea). 
Ailgialitis] mongola Ripeway, Man. N. Am. Birds, 1887, 179. 
Aegialitis mongolus Hartrrt, Novit. Zool., vii, 1900, 9 (Ruk Island, centr. 
Carolines). 
@Bight specimens. bd Eleven specimens. 
Locality. Wing. | Tail. nee Tarsus, a 
MALES. 
Two adult males from northeastern Siberia...............-...- 129 61.5 VW 30 185 
Two adult males from Commander Islands, Kamchatka....... 129.7 54.5 15.2 29.5 18 
Three adult males from Japan...-...- 2.2.2... eee eee eee cence 137 53.5 15.5 29.3 18.5 
One adult male from eastern Turkestan .............-22-20+26+ 123 48 17.5| 34 17.6 
FEMALES, 
Two adult females from northeastern Siberia.................. 139. 2 50 17.5 31 19 
Six adult females from Commander Islands..........-...-.-+++ 131 52.3 15.4 28.9 18.8 
One adult female from Liu Kiu Islands..............-.....-+5+ 135 53 18.5 29 18 
Two adult females from Japan. ........... 202 sseee eee ee eee eeeee 135 52.5 16 29.5 19 
