BIRDS OF NORTH AND MIDDLE AMERICA. 515 



gion, and entire under parts, including axillars and under ^ving- 

 coverts, immaculate white, the posterior under parts -(especially 

 under tail-coverts) very faintly tinged with pale gray; crown, occi- 

 put, nape, upper portion of auricular region, and })road stripe on 

 lores (from lower portion of lateral base of maxilla to anterior angle 

 of eye) ujiiform deep black, this extending narrowly above eye; rest 

 of upper parts, including hindneck, rump, upper tail-coverts, and 

 tail plain fuscous-black, the remiges with a somewhat grayish cast, 

 the feathers of hindneck white beneath surface; anterior margin of 

 lesser wing-covert area, abruptly, white; lateral pair of rectrices 

 white, with distal portion of inner web, more or less extensively, 

 dusky ; next pair of rectrices with inner web blackish distally, passing 

 into pale gray or grayish white basally; inner webs of primaries 

 neutral gray with a well-defined stripe of dusky next to shaft, the 

 latter yellowish white; bill, black; iris, dark brown; legs and feet, 

 dusky or blackish. 



Adults in winter. — Similar to summer adults but, according to 

 Saunders" "with white flecks on the lores and crown." 



Immature. — "Brownish black above, darker on the upper wing- 

 coverts: outer tail-feathers nearly as sooty black as the rest of the 

 rectrices, except towards the tips; tarsi and toes reddish brown."** 



Young. — ^Upper parts deep sooty brown (clove brown to blackish 

 brown or fuscous-black), the scapulare, interscapulars, tertials, 

 smaller wing-coverts, feathers of rump, and upper tail-coverts tipped 

 with white or brownish white, the bars thus formed broadest on pos- 

 terior scapulars, narrowest on interscapulars, rump, and upper tail- 

 coverts; under parts lighter grayish brown (clove brown to dusky 

 drab), passing into much lighter grayish brown or brownish gray on 

 anal region and under taU-coverts, where the feathers are more or 

 less distinctly tipped with a darker or more brownish hue, the abdo- 

 men more or less intermixed with white; outermost (and other) 

 rectrices wholly dusky; remiges as in adults, but darker stripe next 

 to shaft on inner webs less distinct; biU brownish black or dusky 

 brown. 



Downy young.— Vpper parts varying from dark sooty (fuscous- 

 black), narrowly streaked with pale grayish buffy or duU buffy 

 whitish, to pale buffy grayish narrowly and indistinctly, but thickly 

 streaked with dusky; suborbital and malar regions and sides of neck 

 and chest (usually chin and throat also), light brownish gi'ay minutely 

 flecked with paler; rest of under parts immaculate dull white; bill 

 brownish; legs and feet broA\T;iish or dusky. 



Adult male.— Wing, 272-SOO (286.6); tail, 130-162 (148.9); exposed 

 culmen, 40-47 (44.1); tarsus, 22-25 (23.1); middle toe, 19-22 (20.9).* 



a Cat. Birds Brit. Mus., xxv, 1896, 109. 



b Seven specimens from Areas Keys, Yucatan. 



