156 



BLTLLETIN 50, TTNITED STATES NATIONAL MnSEtJM. 



Advlt ))iale.-~\jQwgW\ (skin.s), 111-129(118); wing, (;?,-73 (67.8); tail, 

 45-51 (50); exposed culmen, 9-11 (9.9); depth of bill at nostrils, 3-4 

 (3.5); tarsus, 16-18 (17.5); middle toe, 9-11 (9.9).« 



Adult female.— \jQx\^i\^ (skins), 109-124 (116.6); wing, 62-70 (66.4); 

 tail, 45-52 (48.5); exposed culmen, 9-11 (9.8); depth of bill at nostrils, 

 3.5-4 (3.6); tarsus, 16.5-18.5 (17.5); middle toe, 10-11 (10.3).* 



Western temperate North America; north to British Columl)ia 

 (Vancouver Island and mainland on both sides of Cascade Range), 

 Alberta (Banff), Athabasca (Slave River, 50 miles below Athabasca 

 Lake) and southwestern Mackenzie (Fort Simpson); east to eastern 

 base of Rocky Mountains; breeding south at least to southern border 

 of United States, in New Mexico and Arizona, and to southern 

 extremit}' of Lower California (Sierra de la Laguna); in winter south- 

 ward throughout Mexico, to Vera Cruz (Jalapa, etc.) and Oaxaca 

 (Santa Efigenia). 



Yneo gilvus (not Muscicapa gilva Vieillot) Townsend, Journ. Ac. Nat. Sci. Phila., 

 viii, 1839, 153 (Columbia R. ). — Woodhouse, in Sitgreaves' Expl. Col. and 

 Zufii, 1853, 76, part (New Mexico).— Henry, Proc. Ac. Nat. Sci. Phila., 

 1855, 313 (New Mexico); 1859, 106 (do.).— Baird, Rep. Pacific R. R. Surv., 

 ix, 1858, 335, part, 927 (Fort Bridger, Wyoming); Cat. N. Am. Birds, 1859, 

 no. 245, part.— Xantus, Proc. Ac. Nat. Sci. Phila., 1859, 191 (Fort Tejon, Cali- 

 fornia). — Heermann, Rep. Pacific R. R. Surv., x, pt. iv, 1859, 55 (Califor- 

 nia). — Cooper and Suckley, Rep. Pacific R. R. Surv., xii, pt. ii, 1860, 188 

 (Fort Steilacoom and Puget Sound, Washington). — Butcher, Proc. Ac. Nat. 

 Sci. Phila., 1868, 149 (Laredo, Texas).— Brown, Ibis, 1868, 421 (Vancouver 

 I.).— Cooper, Am. Nat, iii, 1869, 35 (Rocky Mts.).— Allen, Bull. Mus. 



'I Fifty specibaens. 



^' Thirty-one specimens. 



Specimens from different geographic areas average, respectively, as follows: 



Locality. 



MALES. 



Ten adult males from California 



Ten adult males from San Lucas district, Lower 

 California 



Ten adult males from British Columbia 



Ten adult males from Arizona 



Ten adult males from Colorado, Wyoming, Mon- 

 tana, Utah, etc 



Six adult males ( V. g. brewsteri) from Chihuahua 



FEMALES. 



Ten adult females from California 



Three adult females from San Lucas district 



Four adult females from British Columbia 



Ten adult females from Arizona 



Four adult females from Colorado, etc 



Three adult females ( V. fi. brewsteri) from Chihua- 

 hua 



Wing. 



66.4 



67 



67.6 



71.3 

 73 



65.3 



64 



65.6 



67.5 



69 



71.7 



Tail. 



48.1 

 49.3 

 50.4 



Ex- 

 posed 

 culmen. 



10.6 

 9.9 

 9.7 



Depth 

 of bill 

 at nos- 

 trils. 



3.3 



3.9 

 3.6 

 3.5 



3.5 



4 



3.6 

 3.8 

 3.5 

 3.5 

 3.5 



17.9 



17.7 

 17.2 

 17.2 



17.6 

 17.6 



17.3 

 17.7 

 17.7 

 17.4 



18 



Middle 

 toe. 



9.5 



9.9 

 10 

 10 



10.1 

 10.2 



10.3 



10 



10.7 



30.1 



10.9 



