FAMILY TYRANNIDvE 



dd. Grayish brown above; two paler wing bars; 

 an indistinct line of white through upper 



eyelid; cheeks ashy gray 



Sublegatus arenarum glaber 



cc. Very small, length about 93 mm. (.3.65 in.) or 

 smaller; bill long, straight and flat; throat 

 and breast indistinctly streaked with whitish ; 



two distinct yellowish wing bars 



Todirostrum schistaceiceps 



VII. Throat and breast olive, abdomen yellow. 



a. With an excessively broad, flat bill, black above 

 whitish below. 



b. Large, length about 150 mm. (5.90 in.); throat 

 and chest indistinctly streaked with pale yellow 

 Craspedoprion <zquinoctialis 



bb. Very small, length about 79 mm. (3.10 in.); 

 crown russet with concealed yellow crown patch 



(in male) ; tail very short 



Placostomus coronatus superciliaris 



aa. Bill not excessively broad and flat, 

 b. Length about 116 mm. (4.60 in.). 



c. Head proportionately large; bill stout, broad 

 and curved ; upper parts bright olive green . . 

 Genus Rhynchocyclus, (see description) 



cc. Head not proportionately large; crown dark 

 brown ; two conspicuous tawny buff wing bars 

 Leptopogon amaurocephalus pileatus 



bb. Very small, length not over 97 mm. (3.80 in.). 



c. Bill large, deep and decidedy curved ; indistinct 



yellow wing bars; tail short 



Oncostoma olivaceum 



cc. Bill short; conspicuous yellowish white wing 

 bars. 



d. Bill very short, gradually curved; a concealed 



yellow crown patch 



Tyrannulus elatus reguloides 



dd. Of stouter build; bill more slender, deeply 

 curved; no concealed yellow crown patch 

 Camptostoma pusillum flaviventre 



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