556 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



on flanks; rest of under parts white, more or less tinged with pale 

 primrose yellow, at least on flanks, anal region, and under tail-coverts; 

 axillars and under wing-coverts ])ale primrose-yellow, the latter 

 more bufl'y and with feathers grayish brown centrally, along edge 

 of wing; inner webs of remiges edged with pale grayish bufi"; maxilla 

 dusky brown to brownish black, mandible wholly pale brownish or 

 brow'nish white (more or less lilaceous in life); iris brown; legs and 

 feet dusky brown to brownish black. 



Young. — Essentially like adults, but color of upper parts browner 

 olive and wing-bands buff or cinnamon-buff. 



Adult male.— hength (skins), 124-141 (133); wing, 69-74.5 (71.2); 

 tail, 55-62.5 (58.5); exposed culmen, 11-13.5 (12.7); tarsus, 15.5-17.5 

 (16.8); middle toe, 9-10.5 (9.7).« 



.4(?u7^/rmflZf.— Length (skins), 120-144 (130); wing, 63-75.5 (67.5); 

 tail, 52-60.5 (56.1); exposed culmen, 11-13 (12); tarsus, 14.5-17 

 (16.3); middle toe, 9-10 (9.5).^ 



Western North America; east, northerly, to western portion of 

 Great Plains, much farther southerly, breeding in Iowa (?), Missouri, 

 southern Illinois, and probably elsewhere in central Mississippi Valley; 

 north to coast district of British Columbia (Comox; Howe Sound) 

 and coast district of southern Alaska (Dyathal) ?, northern Idaho, and 

 Montana( ?) ; south, in winter over greater part of Mexico to Nicaragua 

 (Sucuya; San Carlos; Grey town), Costa Rica (Pozo Azul), Panama 

 (Saboga Island), and Colombia (Bonda, Buritaca, Pedregal, and 

 Cuatilito, Santa Marta). 



Muscicapa traillii Audubon, Orn. Biog., i, 1832, 236 (Arkansas; types in coll. 



U. S. Nat. Miis.); v, 1839, 426, pi. 45; Synopsis, 1839, 43; Birds Am., oct. ed., 



i, 1840, 234, pi. 65. 

 Tyrannula traillii Richardson, "Rep. Br. Assoc. 1837." — Woodhouse, Rep. 



Sitgreaves' Exp. Ziini and Colorado R., 1853, 74 (Indian Territory; Texas). — 



Heermann, Rep. Pacific R. R. Surv.,x, pt,.iv,no. 2, 1859, 38 (California, etc.). 

 [Tyrannula] traillii Bonaparte, Consp. Av., i, 1850, 189. 



« Twenty specimens. 

 b Eighteen specimens. 



Localitj'. 



MALES. 



Eight adult males from California and Oregon 



Five adult males from Rocky Mountain district. . . 

 Two adult males from southern Illinois 



FEMALES. 



Seven adult females from California and Oregon 



Three adult females from Rocky Mountain district 

 Two adult females from southern Illinois 



Middle 

 toe. 



9.9 

 9.5 



9.3 

 9.8 

 9.5 



