346 NORTH AMERICAS BIRDS. 



ings, thouyli lores and orbits are more or loss distinctly paler. Young with wing- 

 bands ochraceous or pale rusty, anil lower parts more buffy whitish. 



a}. Smaller and browner, with lower parts more tinged with sulphur-j-ellowish, 

 the bill smaller and more slender; length about 4.50, wing 2.10-2.15 (2.12), 

 tail 1.70-1.95 (1.84), culmen .39-.40 (.40), exposed eulmen .28-.30 (.30), depth 

 of bill at base .13-.14, tarsus .55-.60 (.57). Hab. Central America and eastern 

 Mexico, north to lower Kio Grande Valley in Texas. 



472. O. imberbe (Scl.). Beardless Flycatcher. 



a'. Larger and grayer, with little if anj' sulpliur-yellow tinge to grayish white 

 lower parts, the bill larger and thiclcer; length 4.30-4.80 (4.50), wing 2.04- 

 2.28 (2.18), tail 1.78-2.04 (1.89), culmcn .40-.42 (.41), exposed culmcn".30-.35 

 (.32), depth of bill at base .14-.15, tarsus .52-.58 (.56). Hab. Western Mexico, 

 north to southern Arizona, south to Mazatlan. 



472rt. O. imberbe ridgwayi Breavst. Eidgway's Flycatcher. 



Family ALAUDID-^. — The Larks. (Page 321.) 



Genera. 



a'. A spurious primary; tail deeply cmarginate; crown with a blunt erectile crest 

 of soft, normal feathers ; plumage of adult mainlj- dull brownish, much 

 streaked above and below Alauda. (Page 346.) 



a}. No spurious primary; tail even or slightly rouiuled ; crown without crest, but 

 on each side of occiput an erectile, narrow, horn-like tuft of lengthened 

 black feathers; plumage of adult with plain brownish or vinaceous tints pre- 

 vailino- above, the lower parts mainly plain white, the head and chest with 

 bold black markings (less conspicuous in females)... Otocoris. (Page 347.) 



Genus ALAUDA Li.nn^us. (Pago 346, pi. XCYI., fig. 1.) 

 Species. 



Common Characters. — Advlts : Above light brownish, everywhere streaked 

 with black, most broadly on back ; wings dusky, the feathers with pale brownish 

 edges and borders; lower parts and superciliary stripe whitish, the chest pale 

 brownish or tawny buff, distinctly streaked with brownish black ; sides and flanks 

 also tinged with pale tawnj', and usually more or less distinctly, but narrowly, 

 streaked with deeper brownish or dusky; ear-coverts light brownish or tawny, 

 becoming darker (sometimes blackish) along upper margin; outer tail-feathers 

 white, with more or less of dusky along edge of inner web, especially toward base. 

 In winter, the plumage generally more tawny, and feathers of crown, back, etc., 

 with more or less distinct whitish terminal margins. Young: More tawny than 

 •winter adults, with more conspicuous white terminal margins to feathers of upper 

 parts, which instead of having a mesial Idackish streak are marked with a sul)- 

 tcrminal spot of dark- brown ; tertials light tawny brownish, widely bordered with 



