Cory — A Review of Siptornis and Cranioleuca. 155 



i 8 . Upper tail coverts brownish like back and rump. 



1. Upper parts pale brown (between wood brown 



and buffy brown) ; throat spot (in adult ) tawny 

 rufous Cranioleuca sordida sordida (Lesson"). 



(Chili.) 



2. Similar but upper parts darker (more fuscous 



brown) ; throat spot similar 



Cranioleuca sordida flavogularis (Gould). 

 (Santa Cruz, Patagonia.) 



3. Similar but upper parts still darker; under parts 



whitish gray; throat spot rufous chestnut 



Cranioleuca sordida affinis (Berlepsch). 

 (Las Vasques, Tucuman, Argentina.) 

 i 7 . Four outer pairs of tail feathers uniform rufous or 

 brownish rufous. 



1. Two middle pairs of tail feathers dusky brown (at 



least on inner webs); tail feathers pointed; throat 

 spot tawny; under parts tinged with tawny 



Cranioleuca heterura (Oustalet).* 

 (Tucuman, Argentina.) 



2. Four outer tail feathers uniform brownish rufous; 



two middle pairs with more or less blackish; tail 

 feathers not sharply pointed 



Cranioleuca pudibunda (Sclater).f 



(Obraillo, C. Peru.) 



j 6 . Outer tail feather more or less bicolor (not uniformly 



colored to base). 

 j 7 . Middle pair of tail feathers with outer webs rufous, 

 inner webs blackish. 



1 . Outer tail feather with at least basal part of inner 



web dusky brown or blackish; all tail feathers 

 including middle pair with more or less blackish 

 and rufous; throat spot tawny rufous 



Cranioleuca modesta modesta (Eyton). 



(Chili.) 



2. Similar but upper parts sandy earth brown; wings 



and tail longer 



Cranioleuca modesta sajamae (Berlepsch). 

 (Esperanza, Sajama, W. Bolivia). 



3. Similar but throat spot (in adult) chestnut rufous; 



bill longer (about 15 mm.; 



Cranioleuca modesta rostrata (Berlepsch). 

 (Vacas, E. Bolivia.) 



• I have not seen this species, which may belong to a different genus. 



t I have not seen this species, which is described by Sclater (and also Taczanowski) as 

 having the two middle pairs of rectrices only marked with blackish on inner webs, the rest 

 of the tail feathers uniform. Berlepsch, however (J. f. O., 1901, p. 93 in text) states that 

 pudibunda has the 2d to 4th pair blackish on inner webs. As no specimens are available, 

 I have been forced to include it in both sections. 



