On the Ornithology of Cape San Antonio, Buenos Ayres. 405 



ZosTERoPs viRENs, Sund. Green Zosterops. 



Sex uncertain, Rustenburg, June 29th. Irides tawny- 

 yellow. 



This and the three preceding species {Eremomela usticollis, 

 E. hemixantha, and Zosterops sundevalli) are equally common 

 about the wooded parts of the Rustenburg district. Each 

 species is generally found in small companies ; each has the 

 same habits of creeping and hanging about the leaves and buds 

 of trees in search of insects; each appears to have a low 

 melancholy weeping note ; and the flight of each is much the 

 same : it is not easy at a little distance to distinguish the 

 species. 



[To be continued.] 



XXXV. — Ornithological Notes from the Neighbourhood of Cape 

 San Antonio, Buenos Ayres. By Ernest Gibson, F.Z.S. 



[In explanation of the small number of species here recorded 

 and noted on, I have only to say that it seemed better to 

 merely write on those with which I was well acquainted, 

 leaving all others for a future paper. Several I had not yet 

 succeeded in identifying ; and regarding others my data are 

 too insufiicient to work upon, or are wanting in some essential 

 particulars. As a resident in the locality also, and not merely 

 a visitor, I think I am justified in the postponement of all 

 such incomplete notes. 



To Mr. Salvin I am indebted for the identification of my 

 bird-skins ; and I also take the opportunity of acknowledging 

 the valuable assistance and many kindnesses received from Mr. 

 J. A. Harvie Brown, of Dunipace, during the six years of 

 my residence in Buenos Ayres.] 



A few words regarding the locality and the nature of the 

 district may be useful, as indicating what classes of birds are 

 to be found, and in what relative proportions. 



Our land {'' estancia/' or stock-farm) is situated just inside 

 Cape San Antonio, and is bounded on the north by the 

 estuary of the River Plate. A neighbour holds the adjoining 

 piece of land, on which is the cape itself, while his eastern 



SER. IV. VOL. III. 2h 



