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



Specimens examined: Brazil Chapada, Matto Grosso, 18 o" , 22 9 ; 

 Sao Marcello, Rio Preto, Bahia, 2 o" ; Pernambuco, 2 <? ; PQuixada,* 

 Ceara, i d* . 



Paraguay Rio Parana', 3 o",t (2 intergrades, not typical). 



Argentina Conchitas, Buenos Ayres, 2 d" (intergrades). 



Remarks: Out of twenty males from the Provinces of Matto Grosso 

 and Bahia, Brazil, sixteen have the inner web of the outer rectrix black 

 and white, three have it part rufous and part white and only one has the 

 whole web (except the black subterminal band and white tip) rufous. 

 One specimen from Chapada, Matto Grosso, has the tip of several of the 

 rectrices largely rufous as in cinnamomina, but the outer rectrix is part 

 rufous and part white and the wing measures 182 mm. 



Fourteen of the twenty males have the crown plain, with no trace of 

 rufous; five show a trace of rufous; and one has a well marked rufous 

 crown patch; the last can be matched in the banding of the upper parts 

 and spotting of the under parts by specimens having no rufous on the 

 crown. 



Two males from Pernambuco, Brazil, may be referred to australis, 

 and the locality probably represents about the northern limits of its 

 range. In one the wing measures 173 and in the other 180 mm. Both 

 specimens have the under parts well spotted and one has the inner web 

 of the outer rectrix black and white; in the other the outer rectrices have 

 been lost. One has the crown immaculate, but the other shows a well 

 marked rufous crown patch. 



Two males from Conchitas, Buenos Ayres, Argentina, are apparently 

 intergrades between this form and cinnamomina, although a good series 

 from northeastern Argentina might prove them to be subspecifically 

 distinct from either. They are large (wing, 190 and 195) and, while the 



* The single male specimen which I have seen from Quixada, Ceara, Brazil, 

 is provisionally referred to this race. It is evidently not adult and the general 

 coloration of the upper parts is decidedly paler than in either australis or distincta. 

 The markings of the under parts approach australis in being spotted; but the black 

 spots are smaller, largely linear in shape and more scattered. The inner web of the 

 outer rectrix is pale rufous, with the usual subterminal black bar and white tip, in 

 this approaching distincta. The gray crown approaches that of distincta in color 

 and there is a large rufous crown patch. The distal white patches on the inner 

 webs of the outer primaries are decidedly larger and extend much farther towards 

 the end of the feather than in any specimen of australis or distincta seen by me. It 

 may prove to be an immature intergrade between australis and distincta or isabellina, 

 but it is not unlikely that it represents a pale local race peculiar to those arid regions. 

 If this should prove to be the case, I propose for the Ceara bird the name, Cerchneis 

 sparveria ceara (Type from Quixada, Ceara, Brazil. Male, No. 47593, Field Museum 

 of Natural History. Collected by R. H. Becker, June 19, 1913. Wing, 170; tail. 

 126; tarsus, 34 mm.). 



t See remarks concerning these specimens p. 319. 



% This is a young male, the size being very small (wing, 167; tail, no); plumbe- 

 ous wing coverts with rusty tips; entire back barred, etc. It is not included in the 

 average measurements of the species. 



