AUGUST, 1915. NOTES ON SOUTH AMERICAN BIRDS CORY. 333 



Remarks: Two males have a small rufous crown patch; three show 

 a trace of rufous and the rest are plain. Four of the seven females 

 show a little rufous on the crown. Two of the males have the inner 

 web of the outer rectrix with some rufous on the basal portion, but seven 

 have it black and white without rufous. Two very young males have 

 the plumbeous gray feathers of the wings edged with rusty; the back 

 heavily banded with black and the feathers on the posterior portion 

 of the crown distinctly marked with rufous in one and slightly so in the 

 other. Both specimens have the entire abdomen spotted with black,* 

 the inner web of the outer rectrix barred with black and white, and 

 the white tips of the rectrices show a slight wash of rufous. 



KEY TO THE SUBSPECIES. 

 ADULT MALES 



Males may be distinguished from females by their plumbeous gray 

 wing coverts and (in South American races) by having but one black 

 bar on the central rectrices, differently marked under parts, etc. 



I. Breast and often more or less of under parts strongly ochraceous 

 cinnamon, or cinnamon rufous. 



A. Under parts with numerous black spots. 



a. Back rufous or cinnamon rufous; black bars variable. 



a' Wing more than 186; tail band more than 24 mm. 

 Wing, about 190; tail, about 140; tail band 26 mm. 



C. s. eequatorialis , p. 322. 



b' Wing less than 186; tail band less than 24 mm. 

 Greater portion of under parts deeply colored. 



C. s. cuacce, p. 321. 



Under parts much paler; abdomen buffy white or 

 whitish. 



C. 5. peruviana, p. 319. 



b. Back rufous chestnut; black bars large. 



Black markings on under parts irregular and con- 

 spicuously heavy. 



C. s. fernandensis, p. 316. 



B. Under parts without black spots or with black spots con- 

 fined to the sides and largely concealed when the wing is closed. 



* This would seemingly indicate that the black spotting on the under parts 

 (in this form at least) is a juvenile character which largely disappears and becomes 

 confined to the sides in the adult. But this is apparently not the case in such races 

 as C. s. australis, C. s. peruviana, C. s. cinnamomina, etc., as no unspotted specimens 

 have ever been recorded and the numerous unquestionably adult specimens which 

 I have examined have a considerable portion of the under parts strongly spotted. 



