566 BULLETIN 50, FNITED STATES NATIONAL MUSEUM. 



Adult'female.— Length (skins), 115-131 (123); wing, 64.5-70 (67.9); 

 tail, 52.5-57 (55.1); exposed culmen, 9.5-11 (10.3); tarsus, 15-16 

 (15.7); middle toe, 8.5-9 (8.7) .« 



Breeding in mountains of western North America (in Transition 

 and Canadian life-zones), north to southeastern Alaska (Skagway; 

 White Pass; Glacier; 15 miles below Selwyn River, and thence to 

 Yukon Valley (Alaska and Northwest Territory) and southwestern 

 Athabasca (Little Slave Lake), south to Colorado and C-alifornia 

 (Calaveras County; Ventura County?), probably also to northern 

 New Mexico and Arizona;^ in migration southward tlirough Mexican 

 States of Sonora (San Jose Mountains), Chihuahua (Sierra Madre, 

 near Guachochi and near Guadalupe y Calvo; Colonia Garcia), 

 Nuevo Leon (Montere}?^) , Zacatecas (Plateado; Sierra de Valparaiso), 

 Durango (Chacala), Jalisco (Bolafios; San Sebastian; Jacala; La 

 Laguna; Barranca Ibarra), Morelos (Huitzilac), Michoacan (Mount 

 Tancitaro), Puebla (Huachinango ; Mount Orizaba), Vera Cruz 

 (Orizaba; Mirador), and Chiapas (San Cristobal; Gineta Mountains), 

 to highlands of Guatemala (Volcan de Santa Maria; CalderasV 



Tyrammla hammondii Xantus, Proc. Ac. Nat. Sci. Phila. x, 1858, 117 (Fort 

 Tcjon, s. ralifornia; coll. U. S. Nat. Mus.). 



Empidonax hammondii Baird, Rep. Pacific R. R. Surv., ix, 1858, 199; ed. 1860 

 ("Birds N. Am."), 199, pi. 76, fig. 1; Cat. N. Am. Birds, 1859, no. 145.— 

 CotTES, Proc. Ac. Nat. Sci. Phila., 1866, 62 (Fort Whipple, Arizona); Check 

 List, 1873, no. 260; Birds Northwest, 1874, 257.— Sumichrast, Mem. Bost. 

 Soc. N. H., i, 1869, 557 (Vera Cruz).— Cooper, Orn. Calif., 1870, 330.— Baird, 

 Brewer, and Ridgway, Hist. N. Am. Birds, ii, 1874, pi. 44, fig. 7. — Hen- 

 shaw. Rep. Orn. Spec. WTieeler's Survey, 1874, 127 (Apache and Gila R., 

 Arizona, Sept.; Bayard, New Mexico, Sept.; measurements). — Jouy, Proc. 

 U. S. Nat. Mus., xvi, 1893, 783 (Barranca Ibarra, Jalisco). 



[Empidonax] hammondii Coues, Key N. Am. Birds, 1872, 176. 



Empidonax hammondi Sclater, Cat. Am. Birds, 1862, 230 (Northwest Boimdary 

 U. S.); Cat. Birds Brit. Mus., xiv, 1888, 232.— Ridgway, Bull. Essex Inst., 

 V, 1873, 184 (Colorado); vii, 1875, 22 (East Humboldt Mts., Nevada); Orn. 

 40th Parallel, 1877, 543 (East Humboldt Mts.); Nom. N. Am. Birds, 1881, 

 no. 327; Ibis, 1886, 467. — Baird, Brewer, and Ridgway, Hist. N. Am. Birds, 

 ii, 1874, 383.— Henshaw, Zool. Exp. W. 100th Merid., 1875, 362 (Rio Grande, 

 New Mexico, June; localities in Utah, New Mexico, and Arizona, Sept., 

 Oct.).— Lawrence, Bull. IT. S. Nat. Mus., no. 4, 1876, 27 (Gineta Mts., 

 Chiapas). — Belding, Proc. U. S. Nat. Mus., i, 1878, 426 (Calaveras Co., Califor- 

 nia, breeding in pines; Stockton in migration). — Brewer, Proc. U. S. Nat. 



" Seven specimens. 



b Extreme eastern alleged breeding records are Fort Keogh, eastern Montana (Thorne, 

 Auk, xii,' 1895, 215), and Vermilion, southeastern South Dakota (Frazar, Bull. Nutt. 

 Orn. Club, v, 1880, 184; Agersborg, Auk, ii, 1885, 283). Both these localities are on 

 the Great Plains, a country exceedingly different from that in which the species is 

 certainly known to breed, and there is probably an error in these records. Doubtless 

 the error is one of identification; for the young bird referred to by Captain Thorne, 

 now (with the rest of his collection) in the U. S. National Museum, is E. ynimmns and 

 not E. hammondii. Probably all these records pertain to E. minimus. 



