Cory — A Review of Siptornis and Cranioleuca. 157 



2. Similar but forehead brownish olive; size somewhat smaller 

 Cranioleuca curtata debilis (Berlepsch and Stolzmann). 



(Marcapata, S. E. Peru.) 

 c 3 . Face and sides of head rufous or cinnamon. 



cc. Middle pair of rectrices russet brown (different color from 

 rest of tail). 

 1. Cranioleuca erythrops erythrops (Sclater). 



(Pallatanga, Ecuador.) 

 d 4 . Middle pair of rectrices cinnamon rufous like rest of tail. 



1. Chest grayish; rufous of crown extending to nape 



Cranioleuca erythrops griseigularis (Ridgway). 

 (San Antonio, Rio Cali, N. W. Colombia.) 



2. Chest light buffy olive; rufous of crown not extending to 



nape Cranioleuca erythrops rufigenis (Lawrence). 



(Costa Rica.) 

 c 2 . Breast distinctly streaked or with irregular spots. 



1. Back reddish brown; crown somewhat darker; breast brownish 



olivaceous with whitish streaks; superciliary stripe white; 

 belly plain Siptornis striaticollis (Lafresnaye). 



(Bogota.) 



2. Back brown; breast pale grayish brown marked with black 



points or spots to the feathers, belly with obscure blackish 

 bars Cranioleuca gutturata (Lafresnaye). 



(Yuracares, Bolivia.) 

 c 1 . Cap white or brownish white (very different from back); tail and 

 more or less of wing coverts rufous. 



1. Upper back rufous; lower back brownish; under parts olivaceous 



brown; size smaller 



Cranioleuca albiceps (d'Orbigny and Lafresnaye). 



CSica-Sica, Bolivia.) 



2. Upper parts olive brown; cap brownish white; throat and fore- 



neck whitish; rest of under parts pale earthy brown 



Cranioleuca albicapilla (Cabanis). 

 (Maraynioc, Peru.) 

 B. Back distinctly streaked. 



a. Under parts (at least below the throat) not streaked. 

 a 1 . Upper parts dark olive brown streaked with blackish. 



a 2 . Outer tail feathers uniform (plain rufous or brownish rufous); 

 under parts not buffy white. 

 1. Three outer tail feathers plain rufous; size smaller, wing about 

 60 mm.; throat spot rufous; breast and sides more or less 

 tinged with brownish olivaceous 



Cranioleuca wyatti (Sclater and Salvin). 

 (Santa Marta, Colombia.) 



