N.W. Argentina and the Bolivian Chaco. 471 



80. CoRYPHOSPINGUS CRISTATUS (Gm.). 



Two male specimens in moult were obtained at Tatarenda, 

 April 1902. 



81. Paroaria cucullata (Lath.). 



Two young specimens from Colonia Crevaux. These 

 birds are said to occur in large flocks along the reed-beds on 

 the river. 



82. Guiraca Argentina Sharpe. 



A bird shot at Tatarenda in April 1902 I regard as a 

 female specimen of this species, or, rather, subspecies. 



83. Tanagra cyanoptera (Vieill.). 



Rather common, but very shy ; lives in open places in 

 the forest or at the edge of the w r oods. 



84. Tanagra bonariensis (Gm.). 



Specimens w T ere collected at Fortin Crevaux in April 1902, 

 and others observed at Tarija, Bolivia. This bird occurs here 

 and there in couples along the edge of rivers. 



85. Pyranga testacea Sclater & Salvin. 



Only one specimen, observed and shot at Colonia Crevaux 

 in April 1902. 



8G. Molothrus badius (Vieill.). 



Only one specimen, shot at Colonia Crevaux in April 

 1902. 



87. Icterus pyrrhopterus (Vieill.). 



Tatarenda, April 1902. In large flocks on the maize- 

 fields. 



88. Cyanocorax chrysops (Vieill.). 



Tatarenda, April 1902. This bird resembles the common 

 European Magpie in its habits. It emits various sounds, 

 mimics other birds, and when flying in flocks produces a 

 deafening noise. Usually eight or ten individuals arc seen 

 together. It is common near houses, in orange-groves, and 

 other similar places. 



