BIRDS OF WOKTH AND MIDDLE AMERICA. 381 



cc. Crown and crest black or blackish; forehead -whitish or rusty. (Bitoloplms 

 atricristatvs. ) 

 d. Smaller (adult male averaging wing 71.2, tail 61.6, culmen 9.4, tarsus 19.6); 

 gray of upper parts darker, more strongly tinged with olive. (Rio 

 Grande Valley and Southward to Vera Cruz. ) 



Beeolophas atricristatus atricristatus (p. 384) 

 dd. Larger (adult male averaging wing 77.1, tail 66.9, culmen 10.7, tarsus 20.5); 

 gray of upper parts lighter, less tinged with olive. (Central and 

 southern Texas, except Eio Grande Valley. ) 



BeBoIopbTis atricristatus senuetti (p. 386) 

 66. Above brownish gray or grayish brown, the head without any black or rusty; 

 sides and flanks pale brownish gray or grayish brown. [Bxolophus inor- 

 natus. ) 

 c. Smaller (wing of adult male averaging less than 70, of female not more than 

 68); color of upper parts browner. 

 d. Lighter in color, especially the under parts. (California north of San 

 Bernardino Mountains, except shores of San Francisco Bay. ) 



Bseolophus inornatus inornatus (p. 387) 

 dd. Darker, especially the under parts. (Vicinity of San Francisco Bay. ) 



Beeoloplms inornatus restrictus (p. 389) 

 cc. Larger ( wing of adult male averaging more than 70, of female more than 68 ) ; 

 color of upper parts grayer. 

 d. Upper parts darker brownish gray. (Southern California and northern 



Lower California.) Bseolophus inornatus murinus (p. 389) 



dd. Upper parts lighter brownish gray. 

 e. Under parts more decidedly grayish; tail and tarsus decidedly longer, 

 bill larger, and middle toe shorter (adult male averaging wing 72.2, 

 tail 59.6, culmen 12.9, tarsus 21.5, middle toe 12.3). (Arid interior dis- 

 tricts, north to Nevada, Utah, and Colorado, south to New Mexico, 

 Arizona, and Panamint Mountains, California. ) 



Bseolophus inornatus griseus (p. 390) 



ee. Under parts more whitish; tail and tarsus decidedly shorter, bill smaller, 



and middle toe longer (adult male averaging 71.4, tail 56.5, culmen 



11.4, tarsus 19.9, middle toe 13). (Cape district of Lower California.) 



BseolopliuB inornatus ciueraceus (p. 391) 



aa. Throat black, or partly so; a black band across end of auricular region and 



another across side of neck. {Bseolophus woUweberi. ) 



6. Darker, with gray of upper parts more olive; the under parts light olive-gray. 



(South-central Mexico, from Durango and Jalisco to Vera Cruz and Oaxaca. ) 



Bseolophus woUweberi woUweberi (p. 392) 

 66. Paler, with gray of upper parts clearer, the under parts dull grayish-white. 

 (New Mexico and Arizona and southward into Chihuahua and Sonora.) 



Bseolophus woUweberi annexus (p. 393) 



B.<EOLOPHUS BICOLOR (Linnaeus). 

 TUFTED TITMOUSE. 



Admits {sexes alike) in spring and summer. — Forehead black, or sooty 

 black, margined posteriorly, more or less distinctly, with sooty brown; 

 rest of upper parts plain slate-gray; lores dull white, sharply defined 

 against the black frontal patch; orbital region dull white, relieved by 

 a black mark on upper eyelid; auricular region pale gray; malar 

 region and under parts dull white, passing on sides and flanks into 



