BIRDS OF NORTH AND MIDDLE AMERICA. 623 



ff. More rufescent or cinnamomeous brown above, the secondaries less 

 distinctly barred; median under parts more broadly white; smaller 

 (adult male averaging, wing 64, tail 48.7, exposed culmen 17; adult 

 female, wing 58.5, tail 44.2, exposed culmen 16). (AVestern Nicara- 

 gua; western Costa Rica?) Thryophilus pleurostiotus ravns (p. 631) 



ee. Throat and median portion of chest and breast barred, streaked, or other- 

 wise marked with blackish. (Southern Mexico, in States of Morelos 



and Puebla. ) Thryopliilus pleurostictus nisoriuB (p. 631) 



(Id. Sides and flanks not barred. 

 e. Under tail-coverts barred. 

 /. Upper parts chestnut-rufous or brownish rufous. ( Thryopliilus rufalbus. ) 

 g. Blackish bars on tail much less than half as wide as the rufescent 

 interspaces; sides and flanks grayish. (Guatemala; Honduras?) 



Thryophilus rufalbus rufalbus (p. 632) 

 gg. Blackish bars on tail not less than half as wide as rufescent inter- 

 spaces; sides and flanks fulvous brown. 

 li. Larger and brighter colored (adult male averaging, wing 70.1, tail 

 52.1, exposed culmen 19.1, tarsus 24.3; adult female, wing 68, 

 tail 50.5, exposed culmen 18.6, tarsus 23.4. (Eastern Nicaragua 



to Colombia. ) Thyrophilns rufalbus castanonotus (p. 633) 



hh. Smaller and duller colored (adult male, wing 68, tail 50, exposed 

 culmen 17.5, tarsus 23; adult female, wing 62, tail 45, exposed 

 culmen 16.5, tarsus 22.5). (Coast of Venezuela and adjacent 

 portion of Colombia. ) 



Thryophilus rufalbus cumanensis ( extralimital) « 

 ff. Upper parts grayish brown to russet brown. ( Tliryophilus sinaloa. ) 

 g. Browner above. 

 h. Deep russet-brown above, becoming cinnamon-rufous or light 

 chestnut on upper tail-coverts. (Southwestern Mexico, in State 



of Guerrero. ) Thryophilus sinaloa russeus ( p 637) 



hh. Raw-umber brown above, becoming russet on upper tail-coverts. 

 (Western Mexico, in States of Jalisco, Sinaloa, and southern 

 Sonora, and Territory of Tepic. ) 



Thryophilus sinaloa sinaloa (p. 635) 

 gg. Grayer above, the back, etc., broccoli brown, becoming cinnamome- 

 ous wood brown on upper tail-coverts. (Northwestern Mexico, 

 in States of Sonora, Chihuahua, and Durango. ) 



Thryophilus sinaloa oinereus (p. 636) 

 ee. Under tail-coverts immaculate. 

 /. Remiges distinctly barred with blackish; under parts of body entirely 

 buffy or tawny. 

 g. Under parts tawny-ochraceous, deeper on flanks and under tail- 

 coverts; pileum and back raw-umber brown. {Thryophilus gal- 

 In-aithii. ) 



«■ Thryophilus rufalbus cumanensis Chapman, Auk, xiv, Oct., 1897, 363, 367 (ex 

 Troglodytes cumanensis Lichtenstein, Nom. A v. Mus. Berol., 1854, 34; type, in coll. 

 Berlin Mus., said by Cabanis, in Journ. fur Ofn., 1860, 408, to be from Cartagena, 

 Colombia). 



Although I have not seen specimens from Cartagena, those from Cumanacoa, 

 Venezuela, mentioned by Mr. Chapman, as cited above, are certainly different from 

 T. r. castanonotus. 



