igiS.] Cape San Antonio, Buenos Ayres. S9d 



125. Sisopygis icterophrys (VieilL). Yellow - browed 

 Tyrant. 



Iris dark brown. 



Since I wrote about this species in my former paper, it has 

 undoubtedly become more numerous. In June, July, and 

 August it is only occasionally seen (though since 1880 I have 

 actually recorded it in all these months), and I should have 

 difficulty in absolutely establishing its arrival in spring or 

 departure in autumn. 



Besides the woods and (of late years) the garden, it is 

 sometimes found far afield — amongst the '' Durasnillos^' at 

 the edge of a swamp or in a bed of " C'ardas." The short 

 low whistle, its only note, on the nest being approached, has 

 been mentioned by Mr. Hudson. In the crop I have only 

 found small beetles. 



A goodly number of nests noted, range from 3 October to 

 7 December, nearly all of which appertain, however, to the 

 first-named month. In the Tala tree, the end of a branch is 

 selected ; in a Poplar or Elder, it is placed next the stem. 

 I have known of one only four feet from the ground, and 

 another at a height of twelve feet ; seven or eight feet is, 

 however, the general average. The outside material con- 

 sists of twigs or dry grass-stems and a little wool or moss ; 

 the lining of fine roots, horsehair, and often a few light 

 feathers. The whole constitutes but a slight structure. 

 I have two clutches of four eggs, the usual number being 

 three. 



The ground-colour of the eggs is a warm yellowish white, 

 marked with a few large dark red spots, chiefly at the larger 

 end. Measurements: 21x15 ram. 



131. Lichenops perspicillatus (Gm.), Silver-billed Tyrant. 



To my previously published notes on this species I have 

 nothing to add, but somewhat to take away. 



Subsequent dissection taught me that the rufous birds 

 were not necessarily females, as I had formerly surmised. 



Secondly, my description of the nest and eggs is, by a 

 clerical error, totally erroneous and misleading. Mr. Grant 



