126 Mr. J, Graham Kerr on the Avifauna 



26. Paroaria capitata. {Op. cit. i. p. 48.) 



(No. Ill, S •) Fortin Donovan. May 3rd, 1890. 



Equally or even rather more abundant than P. cucullata. 

 Especially conspicuous among the bushes upon the river's 

 banks. 



27. CORYPHOSPINGUS CRISTATUS. {Op. cit . i. p. 48.) 

 Fortin Nueve ; Eortin Page. 



Not common. 



28. PoospiZA MELANOLEUCA. {Op. cit . i. p. 52.) 



{No. 63, S •) Near Fortin Donovan. April 19th, 1890. 



Very abundant amongst the terminal twigs of the trees 

 by the river, in company with PolioptUa dumicola and 

 Parula jjitiayutyii. 



29. ZONOTRICHIA PILEATA. {Op. cU . \. p. 58.) 



Very abundant everywhere. 



30. EmBERNAGRA PLATENSIS. {Op. Cit. \. p. 62.) 



(No. 5, $ .) Frequently met with in the open palmar 

 with scattered bushes. 



31. Chrysomitris icterica. {Op. cit. i. p. 64.) 

 Occasional flocks appeared during the winter, but not 



common. 



32. Amblycercus solitarius. {Op. cit. i. p. 72.) 



(No. 55, c?; 122, ? .) Fortin Nueve. April 13th, 1890. 



Avery common and characteristic inhabitant of the Chaco, 

 frequenting especially the brush and belt of open wood 

 which usually borders the rivers. Its nest, of the usual 

 elongated flask-shape, and built of coarse brown fibres, de- 

 pends from the tip of a branch, frequently overhanging the 

 water. Its " song " is very sweet, though extremely short, 

 consisting only of three notes — whee-hon-ah ! — clear and me- 

 tallic, and remarkably rich in tone. It also frequently utters 

 a peculiar miauw-\\\s.e sound, either alone or followed by a 

 couple of abrupt, deep, and peculiarly liquid notes — miauw- 

 cu-cu. 



33. Cassicus albirostris (Vieill.) ; Scl. Cat; Birds, xi. 

 p. 323. 



Exceedingly common and characteristic. Freqiieritly seen 



