106 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Downy young.—Upper parts pale brownish buff irregularly mottled 
with black, this forming a distinct marbling on crown and occiput, 
where the ground-color is lighter and clearer buff; forehead and 
superciliary region (broadly), sides of head, and under parts immacu- 
late buff; a narrow postocular streak of black terminating posteriorly 
in a large irregular spot or blotch of black. 
Adult male.-—Wing, 138-154 (146.7); tail, 57-69 (65.4); culmen, 
19-22 (20.6); tarsus, 37-40.5 (38.4); middle toe, 17.5-19.5 (18.3).¢ 
Adult female.—Wing, 143-155 (148.2); tail, 61-67 (64.2); culmen, 
21-22.5 (21.9); tarsus, 37-39 (38.3); middle toe, 17-20 (18.5).° 
Arid plains of west-central United States, breeding from western 
Nebraska and northern Montana, south to northern New Mexico 
and northwestern Texas; wintering from northern California and 
southern Texas to southern Lower California (San Telmo; Tia Juana; 
La Paz) and northern Mexico (Hermosillo, Sonora; Matamoros, Ta- 
maulipas; Zacatecas). Accidental in Massachusetts (Chatham, Oct. 
28, 1916). 
Charadrius montanus TowsEnp (J. K.), Journ. Ac. Nat. Sci. Phila., vii, 1837, 192 
(“central table-land of the Rocky Mountains,’’i. e., near Sweetwater River, 
Wyoming); viii, 1839, 156; Narrative, 1839, 349.—OrnirHoLocicaL Commrr- 
reE, Journ. Ac. Nat. Sci. Phila., vii, 1837, 193 (Columbia River).—Avupv- 
BON, Orn. Biog., iv, 1838, 362, pl. 350; Synopsis, 1839, 223; Birds Am., 8vo. 
ed., v, 1842, 213, pl. 318.—SrzBoum, Geog. Distr. Charadriide, 1888, pp. 
xvii, 153. 
C{haradrius] montanus Gray, Gen. Birds, iii, 1847, 544.—GamBeL, Journ. Ac- 
Nat. Sci. Phila., 2d ser., i, 1849, 220 (coast of California). 
[Charadrius] montanus Gray, Hand-list, iii, 1871, 15, no. 9997. 
Aigialites montanus Bonaparte, Geog. and Comp. List., 1838, 45.—Dresser, Ibis, 
1866, 33 (s. Texas).—Covss, Ibis, 1866, 266 (s. California). 
Aegialitis montanus Cassin, in Baird, Rep. Pacific R. R. Surv., ix, 1858, 693.— 
Barrp, Cat. N. Am. Birds, 1859, no. 505.—Covuss, Ibis, 1865, 159 (New Mex. 
ico).—Coorer, Am. Nat., iti, 1869, 82 (e. base Rocky Mts., Montana).— 
ExuroT, Illustr. New and Unfig. N. Am. Birds, pt. 2, 1866 (vol. ii), pl. 39. 
4Zigialitis montanus AuLEN, Bull. Mus. Comp. Zool., iii, 1872, 141 (Fort Hays, w. 
Kansas), 181 (middle Kansas; plains of Colorado and Wyoming; South Park, 
Colorado); Am. Nat., vi, 1872, 359, 360 (Kansas); Proc. Bost. Soc. N. H., 
xvii, 1874, 66 (Yellowstone Park).—Ripeway, Am. Nat., viii, 1874, 109 
(crit.).—GRINNELL (G. B.), in Ludlow’s Rep. Recon., 1876, 86 (Haymaker’s 
Creek, Montana, breeding). 
Aigialitis montana Betpine, Proc. U. 8. Nat. Mus., i, 1879, 440 (Stockton and 
Marysville, California, Oct.-Dec.)—AmeERIcAN ORNITHOLOGISTS’ UNION, 
Check List, 1886, and 2d ed., 1895, no. 281.—Coopsr, Auk, ii, 1887, 91 
(near Saticoy, Ventura Co., California, Dec.).—Bryanr (W. E.), Proc. Calif. 
Ac. Sci., 2nd ser., ii, 1889, 275 (San Telmo and Tia Juana, Lower California, 
winter).—Cooxge, Bull. 56, Col. Agric. Exp. Station, 1900, 199 (South Park, 
Colorado, breeding). 
A{gialitis] montana Ripaway, Man. N. Am. Birds, 1887, 176. 
Aigialitus montanus Coorzr, Amer. Nat., iii, 1869, 298 (near Great Falls, Mon- 
tana). 
4 Right specimens. b Five specimens. 
