BIRDS OF NORTH AND MIDDLE AMERICA. 609 



(/(/. Pileum more or less distinctly brown medially, or elae throat distinctly 

 streaked with black; black postocular stripe broader, not extended 

 anteriorly beneath eye. 

 e. Back, etc., lighter chestnut-brown or rufous-brown; flanks deep russet, 

 throat (usually) more distinctly streaked; bill larger (exposed culmen 

 14.5-16.5). (Costa Rica and Chiriqui. ) 



Heuioorhina leucophrys collina (p. 613) 

 ee. Back, etc., dark chestnut; flanks chestnut; throat indistinctly streaked; 

 bill smaller (exposed culmen 13.5). (Eastern Guatemala.) 



Henicorhina lencophrys castanea (p. 615) 

 cc. Coloration paler, the pileum brown with narrow black lateral margin; back, 

 etc., tawny-brown, russet, or rusty brown; flanks tawny-brown or light 

 russet. 

 (/. Pileum dark sooty brown or sooty grayish broadly margined laterally with 

 black. 

 e. Pileum sooty brown; back brighter rusty brown; flanks brighter tawny- 

 brown or russet. ( Western Ecuador. ) 



Henicorhina lencophrys berlepschi (extralimital)« 

 ee. Pileum sooty grayish; back duller, more olive, brown; flanks duller 

 tawny-brown or tawny-olive. ( Western (Guatemala and Chiapas. ) 



Henicorhina lencophrys capitalis (p. 615) 

 (l(L Pileum lighter brown (nearly concolor with back), very narrowly if at all 

 margined laterally with black. 

 e. Pileum, hindneck, and upper back tawny-brown or mummy brown. 



(Southeastern Mexico.) Henicorhina lencophrys mexioana (p. 616) 



ee. Pileum, hindneck, and upper back grayish brown. (Southwestern 



Mexico. ) Henicorhina leucophrys festiva (p. 616) 



hh. Breast very pale gray (almost grayish white). {Henicorhina hilaris. } 



c. Lighter and more tawny brown above, the pileum and hindneck more olive 



brown; tail lighter brown, more broadly and regularly barred with dusky; 



bill smaller (exposed culmen 12.5-14). 



d. Smaller, except bill (wing 53.5, tail 28, tarsus 23) ; chest paler gray, throat 



tinged with buff, and abdomen more extensively suffused with buff. 



(western Ecuador. ) Henicorhina hilaris hilaris (extralimital ) <> 



dd. Larger, except bill (wing 56, tail 30, tarsus 25.5) ;« chest deeper gray, 

 throat without buff tinge, and abdomen less extensively suffused with 

 buff. (High mountains of Santa Marta, Colombia, 11,000 to 12,000 feet 

 altitude. ) Henicorhina hilaris anachoreta (extralimital)'' 



(^Henicorhina leucophrys (not Troglodytes leucophrys Tschudi) Berlepsch and 

 Taczanowski, Proc. Zool. Soc. Lond., 1883, 539 (Chimbo, w. Ecuador; crit.). — 

 Henicorhina hilaris, part, Berlepsch and Taczanowski, Proc. Zool. Soc. Lond., 1884, 

 284, part (specimen from Pedregal, w. Ecuador). — Henicorhina leucophrys berlepschi 

 Ridgway, Proc. Biol. Soc. Wash., xvi, Nov. 30, 1903, 168 (Chimbo, w. Ecuador; 

 coll. Am. Mus. Nat. Hist.). 



i Henicorhina hilaris Berlepsch and Taczanowski, Proc. Zool. Soc. Lond., 1884, 284 

 (Cayandeled and Chaguarpata, w. Ecuador). A cotype of this form, received from 

 Count von Berlepsch, is in the National Museum collection. 



"The measurements given of H. h. hilaris and H. h. anachorela are of a single adult 

 male of each. 



(^Henicorhina anachorela Bangs, Proc. New Engl. Zool. Club, i, Dec. 27, 1899, 84 

 (Paramo de Chiruqua, Sierra Nevada de Santa Marta, Colombia, 12,000 ft. alt; coll. 

 E. A. and O. Bangs). 



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