BIRDS OF NORTH AND MIDDLE AMERICA. 625 



MYIARCHUS CINERASCENS CINERASCENS (Lawrence). 

 ASH-THROATED FLYCATCHER. 



Similar to M. mexicanus mexicanus, but much smaller (except 

 wing), bill relatively much smaller, color of back either grayer or 

 browner (less olive), yellow of under parts paler, and inner webs of 

 lateral rectrices with cinnamon-rufous occupying nearly the whole 

 width of web but not extending to tip (except in some females). 



Adult male. — Pileum broccoli brown or hair brown, the feathers 

 darker centrally; rest of upper parts plain grayish brown (more 

 brownish in some winter specimens), the hindneck more grayish; tail 

 deep or dusky grayish brown, the outer webs of rectrices edged with 

 paler, that of outermost rectrix decidedly paler, sometimes approach- 

 ing dull white; inner webs of rectrices (except middle pair) cinnamon- 

 rufous, this extending quite to shaft for greater part, but gradually 

 contracted terminally and on at least the lateral rectrix cut off from 

 tip by a terminal or subterminal area of dusky grayish brown; wings 

 dusky grayish brown, the middle and greater coverts broadl}^ tipped 

 with pale grayish brown, pale buffy brown, or dull wdiitish, secondaries 

 edged with pale buffy brownish or dull whitish, and primaries edged 

 (except terminally) with cinnamon-rufous; sides of head and neck 

 gray, slightly tinged with brown, especially on auricular region, 

 gradually fading below into much paler gray (about no. 10) of malar 

 region, chin, throat, chest, and upper breast, the rest of under parts 

 very pale yellow, deeper (primrose yellow) posteriorly; axillars and 

 under wing-coverts primrose yellow; inner webs of remiges edged 

 with pale cinnamon-rufous; bill brownish black to dark horn color, 

 usually more brownish basally; iris brown; legs and feet black; 

 length (skins), 187-207 (197); wing, 98.5-104 (100.9); tail, 88.5-97 

 (92.5); exposed culmen, 18-20(19.1); tarsus, 21.5-24 (22.8) ; middle 

 toe, 12-13.5 (12.9).« 



Adult fe nude. — Similar to the adult male, but usually with the dusky 

 terminal or subterminal space on inner web of lateral rectrices smaller, 

 as a rule not entriely crossing the web and sometimes not extending 

 halfway across; length ( skins) , 174-205(189); wing, 92-100.5 (95.5) ; 

 tail, 84-92 (87.1); exposed culmen, 17-19.5 (18.6); tarsus, 22-23.5 

 (22.6); middle toe, 12.5-13.5 (12.8)." 



Young. — Essentially like adults, but pileum cinnamon-brown or 

 wood brown, rectrices cinnamon-rufous with a median streak of 

 grayish brown, upper tail-coverts strongly tinged with cinnamon- 

 rufous, outer webs of remiges mostly bulTy cinnamon-rufous, other 

 wing-markings tinged with cinnamon-buff, and yellow of under parts 

 much paler (yellowish white). 



o Eighteen specimens. & Thirteen speeimens, 



11422— VOL 4—07 40 



