274 BROOKLYN INSTITUTE MUSEUM. SCIENCE BULLETIN 2. 6. 



h'. Back not striated (no pale markings). 



. Greater and middle wing-coverts more or less con- 

 spicuously tipped, edged, or spotted with white, buff, 

 or black. 



j. None of the rectrices tipped or marked with white. 

 k. Lateral toes with claws not reaching to base of 



claw of middle toe. 

 /. Wing coverts with small white or whitish 



apical spots 



I'. Wing coverts with subapical black spots 



k'. Lateral toes with claws reaching to or beyond 



the base of the claw of the middle toe. 

 I. Feathers of chin and throat black, at least 

 basally 



/'. Feathers of chin and throat not black, 



even at base. 

 m. Middle of back dusky gray, not greatly 



different from remaining upper parts 



m'. Middle of back rufous, quite different from 



remaining upper parts. 



n. Throat ochraceous buff, remaining lower 

 parts tawny olive 



n'. Throat pale (whitish), remaining lower 



parts gray or brownish gray 



j'. Some or all of the rectrices tipped or edged with 

 white (in C. iyrannina the white tips to tail-feathers 

 are almost obsolete) . 



k. General color of under-parts yellow or yellowish. 

 k'. General color of under-parts black, gray or pale 



buffy. 

 /. A concealed white dorsal spot. 



m. General color, above and below, black 



m'. General color, above and below, gray. 



n. Shoulder patch white 



n'. Shoulder patch slate gray like wing- 

 coverts (pale markings on wing-coverts 



almost obsolete) 



I'. No concealed white dorsal spot. 



m. Back black or slate black 



m'. Back smoke gray or cinnamon brown. 



n. Upper-parts cinnamon brown. / 



n'. Upper-parts smoke gray 



i. Greater and middle wing-coverts unmarked (some 

 males of Cercomacra cinerascens have obsolete pale 

 markings on coverts). 



j. General color above and below slate gray 



f. General color above and below not gray. 



k. Dorsal concealed spot white 



k'. No concealed dorsal spot. 



1. With hazel crown patch 



I'. No crown patch. 



m. Above grayish olive 



m'. Above raw umber 



"Second phalanx of middle toe partly united to outer toe; acrotarsium 

 fused (booted) " l (Pithys, Hylophylax, Anoplops). 

 >. Back marked either with rounded buff or white spots or narrow white, 



or buffy, apical bands to the feathers. 

 c. Markings on back rounded white or buffy. 



d. Back markings white 



t d'. Back markings cinnamon buff 



c'. Back markings in the shape of narrow apical, white or cinnamon 



buff, bands to the feathers. 

 d. Apical margins to back feathers white. 



e. Entire under parts including throat dark gray 



Myrmoderas atrolhorax. 

 'Myrmeciza boucardi grisei- 

 pectus. 



<fad Myrmopagis haematon 

 ta haematonola. 



tfMyrmeciza schisiacea. 



9 Myrmopagis haemalonola 

 haematonota. 



Terenura spodioptila. 

 Herpsilochmusf rater. 

 tfCercom 



era nigricans. 



Myrmotherula melaena. 



Microrhopias orenocensis. 

 Microrhopias cano-fumosus. 



Cercomacra cinerascens. 

 9 Cercomacra tyrannina. 

 Hapalocercus meloryphus. 



9 Myrmopagis axillaris. 

 [ 9 Myrmopagis melaena. 

 { 9 Myrmopagis schisticolor in- 

 ( terior. 



Hylophylax punctulata. 

 Hylophylax naevia naevia. 



e . Under parts ochraceous buff brightening to rufous on the 

 throat and darkening to buffy brown on the flanks ........... 



'. Apical margins of back feathers cinnamon buff, (forehead, sides 

 of head and chin ferruginous, remaining under parts gray) . ..... 



f ^Hylophylax poecilinota poe- 

 I cilinota. 



1 9 Hylophylax poecilinota lepi- 

 [ donola. 



poecilinota lepi- 



9 Hylophylax poecilinola peo- 



Hyloph 

 ilinota. 



'Ridgway, Birds N. & M. America, V: 1911: p. 16. 



