80 Mr. C. H. B. Grant on Birds collected in Argentina, 



additiou the yellow of the throat is very much duller aud 

 the white ring round the eye somewhat narrower. 



From Z. palpehrosa, which also occurs in the Peninsula, 

 the species is at once differentiated by the yellow mesial 

 streak on the abdomen and the absence of a yellowish- 

 oratie:e tin^e on the forehead and in front of the eve. 



III. — List of Birds collected in Argentina, Paraguay, Bolivia, 

 and Southern Brazil, ivith Field-notes. By Claude li. B. 

 Grant, M.B.O.U. — Part I. Passeres. 



(Plate II.) 



The collections on which this paper is based were made in 

 various localities in Argentina, Paraguay, and Southern 

 Brazil (see map, Plate II.). At Los Ynglases I collected 

 in the Ajo district, some fifty miles to the south of 

 Buenos Aires, between September 1908 and June 1909, and 

 from December 11th, 1909, to March 11th, 1910, on behalf 

 of the British Museum and Mr. Ernest Gibson, F.Z.S. I 

 also visited the following localities in Northern Argentina, 

 Paraguay, and the Mat to Grosso district of Brazil (where I 

 accompanied Mr. G. W. Tudor in his steam-launch ' Leda,' 

 on an expedition up the Rio Parana and Rio Paraguay), 

 between the end of July and the middle of November 1909, 

 ■when we proceeded as far north as Corumba in Matto 

 Grosso : — 



Northern Argentina. — Rosario, Santa Elena, Esquina, 

 Goya, Bella Vista, Riaclio Ancho, Colonia Mihanovitch. 



Paraguay. — Humaita, Tayru, Villa del Pilar, Tebicuari, 

 Arjerichi, Villa Franca, Villa Oliva, Mortero, Santa Rosa, 

 Villeta, Monte Alto, Maseras, Puerto San Juan, Puerto Asir, 

 Curuzu Chica, Sapatero Cue, Puerto Pinasco, Colonia Risso, 

 Cerro Concurencia, Puerto Maria, Puerto Medano, Fuerte 

 Olimpo, Cabo Emma, and Ba.hia Negra. 



Bolivia. — The few miles of the river-bank that have now 



