Cory—A Review of Siptornis and Cranioleuca. 158 
2. Primaries not edged with rufous 
Cranioleuca ruticilla (Cabanis and Heine). 
(Buenos Aires, Argentina.) 
et, Under parts white, whitish or grayish white. 
1. Size larger; middle rectrices uniform to the ends 
Cranioleuca striaticeps striaticeps (d’Orbigny and Lafresnaye). 
(Bolivia.) 
2. Size smaller; middle rectrices with inner webs tinged with 
dusky and dusky ends 
Cranioleuca striaticeps heterocerca (Berlepsch). 
(Cosquin, Cordova, Argentina.) 
ce, Crown not streaked. 
¢. Flanks streaked with black or blackish. 
1. Under parts white or whitish; wing: blackish bordered 
with mouse color Siptornopsis hypochondriacus (Salvin) 
(Melea, Cajabamba, Peru.) 
d‘. Flanks not streaked with black. 
1. Edges of wing coverts rufous; basal part of outer webs of 
remiges pale rufous forrning a band; a sulphur yellow throat 
spot (adult); no throat spot; under parts more or leas tinged 
with ochraceous or pale tawny; crown and back buffy brown 
(Gmmature) Cranioleuca sulphurifera (Burmeister). 
(Buenos Aires, Argentina.) 
2. Wing coverts and tail dark rufous; under parts ochraceous; 
crown and back tinged with olivaceous (immature); 
cap rufous (adult) Cranioleuca pallida (Wied). 
(Campos Geraes, S. E. Brazil.) 
c?. Some tail feathers (at least) bicolored, marked or bordered with 
differently colored ends or bases. 
c. Throat white, the feathers with black or brown points or spots; 
breast (at least) with narrow shaft streaks (no colored throat 
patch). 
1. Wing coverts, flanks and lower abdomen rufous brown; a 
white superciliary stripe; tail dark brown, the outer webs 
of the two outer feathers largely rufous brown 
Cranioleuca humicola humicola (Kittlitz). 
(Valparaiso, Chili.) 
2. Similar but wing coverts, flanks and lower abdomen more 
rusty brown; superciliary stripe but slightly indicated or 
absent 
Cranioleuca humicola steinbachi (Hartert and Venturi). 
(Cachi, Prov. Salta, Argentina.) 
d*, Throat (in adult) with patch or spot of rufous, chestnut or 
tawny; throat spot absent or faint in immature. 
d‘. Tail more than 90 mm. long. 
1. Tail feathers rufous shading to dusky rufous towards the 
ends; crown and back brown; forehead rufous; throat 
spot (in adult) rufous 
Pseudosiptornis ottonis (Berlepsch). 
(Cuzco, Peru.) 
