1918,] Cape San Antonio, Buenos Ayres. 393 



impression that they were nesting. From my notes 

 I gather that all these cases were confined to the more 

 eastern parts of the estancia Los Yngleses, none passing 

 further inland : from wliich I deduct that they must either 

 have migrated following the littoral, or crossed boldly over 

 the mouth of the estuary of the River Plate from the Banda 

 Oriental. It also is to be observed that these occurrences 

 synchronize with the southern range assigned to the species 

 by Hudson, namely, the thirty-sixth degree of latitude. 



Referring to their association with the Yellow-breasted 

 Marsh-bird {Pseudoleistes virescens) and De Filippi's Marsh- 

 Starling {Tnipialis defi/ippii), I remember how, riding home 

 one evening, I came across a large gathering of the three 

 species. The grass of the campo was short, turf-like, and 

 emerald-green. The birds in conseqnence stood out in relief 

 upon it, and the rays of the setting sun brought out all the 

 brilliant hues as of a most ])rilliant carpet. 



Mr. Hudson describes the nest and ecrffs. 



In another paper of my own ('The Ibis,' July 1885) will 

 be found similar details regarding a small nesting-colony 

 near Paisandu, in the Banda Oriental. 



99. Agelaeus ruficapillus Vieill. Red-headed Marsh-biid. 

 Mr. Grant chronicles the only record of this species 



(Bull. B. O. C. XXV. p. 114, 1910). A female was obtained 

 by Miss Runnacles in the swamps. 



100. Leistes superciliaris Bp. Red-breasted Marsh-bird. 

 Adult. — Male: Iris brown; bill black (upper ridge of 



lower mandible white) ; feet black. Female : Iris brown ; 

 bill— upper mandible dark brown, lower one pale liorn- 

 colour; feet pale horn-colour. 



In effect this very beautiful species has only appeared 

 twice in our district, in the summer of 1901 and that of 

 1916. In considerable numbers on both occasions, and 

 nesting. Also, these were epochs of much drought, here 

 as elsewhere. 



The first-named year I found it in a large paddock of 



2f2 



