320 FIELD MUSEUM OF NATURAL HISTORY ORNITHOLOGY, VOL. I. 



spots on the abdomen largely confined to the middle of the feathers; 

 tail feathers tipped with white, more or less mixed with rufous (in some 

 specimens the rufous color predominating) ; inner web of outer rectrix 

 normally rufous, with one subterminal black bar, the tip white; outer 

 web of third outer primary with three white spots ; the second with one 

 small narrow streak or only a slight trace; tail band about 19 mm. 



Wing, 175 to 183, average, 181; tail, 129 to 138, average 134 mm. 



Female. Similar to female of australis, but upper parts and upper 

 surface of tail averaging slightly more deeply colored and outer tail 

 feathers more often nearly immaculate. 



Wing, 180 to 193, average, 186; tail, 131 to 140, average, 135 mm. 



Comparative differences: Male differs from C. s. cinnamomina in 

 smaller size; breast noticeably more ochraceous cinnamon rufous; sides 

 and flanks tinged with ochraceous cinnamon (not white or almost white 

 as in cinnamomina) ; subterminal black band on tail broader. 



Male differs from C. s. australis in deeper colored under parts; more 

 ochraceous cinnamon rufous on breast ; sides and flanks distinctly washed 

 with pale ochraceous cinnamon (not white as in australis') ; inner web of 

 outer rectrix normally rufous (not black and white as in australis}; 

 crown darker and tail longer. Female differs from australis in rela- 

 tively and actually shorter tail; and somewhat paler brown markings 

 on the under parts. 



Male differs from C. s. aquatoriaUs in smaller size and much less 

 deeply colored under parts. Differs from C. s. cauc(z, to which it is 

 very closely related apparently, only in the paler coloration of the breast 

 which in cauccz more nearly approaches C. s. ochracea; also less pro- 

 nounced white spots on outer web of second and third primaries. From 

 andina and intermedia it may be distinguished at a glance by the spotted 

 and much paler under parts and other characters. 



Specimens examined: Peru Chachapoyas, id 1 ; Macate, 2 d 1 , 

 3 9 ; Menocucho, i d 1 ; Mirador, id", i 9; Hda. Limon, near Balsas, 

 i d 1 ; Cajamarca, i 9 ; Lima, i d 1 . 



Ecuador Huigra, i d 1 ; Junction of Chanchan and Chiguancay 

 Rivers, i d 1 . 



Bolivia Yungas, i d 1 (not typical). 



Remarks: Of seven males from Peru, six have the inner web of the 

 outer rectrix rufous, with subterminal band of black and the tip white, 

 and one (from Macate) has it black and white. All have the tips of 

 the rectrices more or less rufous, and in two the rufous color predomi- 

 nates, resembling cinnamomina in this character; the subterminal black 

 band on the rectrices varies in width from 17 to 20 mm. in different 

 specimens. None of the males show any trace of rufous on the crown, 



