FAMILY TYRANNIZE 



VIII. Very small species. 

 a. Under parts tawny. 



b. Very minute, length about 91 mm. (3.60 in.); 

 wings (when closed), rump and tail tawny. . . . 

 Terenotriccus erythrurus Julvigularis 



bb. Larger, length about 112 mm. (4.40 in.); throat 



olive; two tawny wing bars 



Pipromorpha oleaginea parca 



aa. Under parts not tawny. 



b. Bill proportionately large and long. 



c. Under parts sulphur yellow; crown wholly or 

 partly black. 



d. Very minute; throat white; hindneck black 

 in abrupt contrast to yellowish green back 

 Todirostrum nigriceps 



dd. Throat yellow; hindneck gray shading into 



grayish olive of back 



Todirostrum cinereum finitimum 



cc. Chest gray or olive; crown with no black, 

 d. Chest gray. 



e. Very minute; abdomen whitish; two wing 

 bars Atalotriccus pilaris ivilcoxi 



' ee. Larger; abdomen yellowish; crown slate; 



two yellowish wing bars 



Todirostrum schistaceiceps 



dd. Chest olive. 



e. Bill very wide and flat; crown russet (with 

 yellow center in male only) ; no wing bars 

 Placostomus coronatus super ciliaris 



ee. Bill long and arched ; crown olive like back ; 



two yellowish wing bars 



Oncostoma olivaceum 



bb. Bill short and deep, more or less curved ; abdomen 

 whitish or dull yellow. 



c. Of stout build; no crown patch. 



d. Dull yellowish white below; two distinct 



whitish wing bars 



Camptostoma pusillum flaviventre 



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