656 BULLETIN 50^ UNITED STATES NATIONAL MUSEUM. 



e. Pileuni more or less buffy or cinnamomeous, in contrast with color of 

 back, the latter more strongly suffused with buff; remiges more broadly 

 edged with cinnamomeous. (Costa Rica to Ecuador.) 



Myiodynastes maculatus nobilis (p. 659) 

 ee. Pileum without buff or cinnamon, concolor with the back, the latter more 

 olivaceous; remiges more narrowly edged with pale brownish or cinna- 

 momeous. (Southern Mexico.) .Myiodynastes maculatus insolens (p. 661) 

 cc. Superciliary stripe white; chin and sides of throat grayish, broadly streaked 

 with dusky; under parts of body light yellow. (Arizona and Panama.) 



Myiodynastes luteiventris (p. 656) 

 aa. Under jiarts not streaked (except, sometimes, obsoletely on chest or sides of 

 breast). 

 b. Rump and upper tail-coverts cinnamon-rufous; rectrices and remiges exten- 

 sively cinnamon-rufous; sides of pileum and whole hindneck light brown. 



(Western Ecuador and western Peru.) Myiodynastes bairdi (extralimital) « 



bb. Rump and upper tail-coverts greenish olive (the latter margined terminally with 

 buffy or cinnamomeous); remiges and rectrices with little, if any, cinnamon- 

 rufous; sides of pileum, etc.. grayish dusky. 

 c. Throat dull pale buffy, passing into white on chin; chest buffy yellowish 

 streaked with pale grayish; sides of breast more dif5tinctly streaked ; rest of 

 under parts paler yellow. (Colombia to Venezuela and Peru.) 



Myiodynastes chrysocephalus (exti'alimital) t> 

 cc. Throat canary yellow, passing into white on chin; chest canary or lemon 

 yellow, without streaks (except laterally); sides of breast less distinctly 

 streaked, rest of under parts deeper yellow. (Costa Rica and Panama.) 



Myiodynastes hemichrysus (p. 662) 



MYIODYNASTES LUTEIVENTRIS Sclater. 

 SULPHUR-BELLIED FLYCATCHER. 



Adults (sexes alike). — Pileum light brownish gray or olive, streaked 

 with blackish, the ground color passing into pale hoary gray or grayish 

 white on forehead and superciliary region, where the dusky streaks are 

 smaller or narrower, sometimes nearly obsolete; crown with a large 

 concealed patch of bright yellow (canary to cadmium) ; back, scapu- 

 lars, and upper rump light olive, usually more or less tinged with buffy, 

 the feathers dusky centrally, forming broad streaks or longitudinal 

 spots; lower rump and upper tail-coverts cinnamon-rufous, streaked 

 mesially with dusky; tail cinnamon-rufous, the retrices with a nar- 

 row shaft-streak of dusky (expanded, more or less, sub terminally), the 

 middle pair with the dusky forming a broad stripe ; wings dusky, the 



a Saurophagus bairdi Gambel, Journ. Ac. Nat. Sci. Phila., ser. 2, i, 1847, 40 ("Cali- 

 fornia;" type doubtless from Guayaquil, Ecuador). — Myiodynastes bairdi Salvin, 

 Ibis, 1874, 324; Sclater, Cat. Birds Brit. Mus., xiv, 1888, 186.— Tyr annus atnfrons 

 Sclater, Proc. Zool. Soc. Lond., 1857, 274 (Guayaquil, w. Ecuador; coll. T. Eyton).— 

 Myiodynastes atrifrons Sclater, Proc. Zool. Soc. Lond., 1859, 43. — [Pitangns] atnfrons 

 Gray, Hand-list, i, 1869, 357, no. 5436. 



b Sc[aphorhynchus] chrysocephahis Tschudi, in Weigmann's Achiv. fiir Naturg. , 1844, i, 

 272 (Peru); Fauna Peruana, Aves, 1849, 150, pi. 8, fig. 1. — Pitangus chrysocephalus 

 Sclater, Proc. Zool. Soc. Lond., 1855, 150. — Myiodynastes chrysocephalus Sclater, Proc. 

 Zool. Soc. Lond., 1859, 43, 143; Cat. Birds Brit. Mus., xiv, 1888, 187 .— M[egarhynchus] 

 chrysocephalus Heine, Journ. fiir Orn., 1859, 345. 



