168 On the Birds of the Estancia Sta. Elena. 



9. Hydropsalis furcifera (Vieill.). (Arg. Orn. ii. 

 p. 15.) 



I found a nest of this Goatsucker last November. It was 

 placed on the bare ground^ where the bird had scraped a 

 slight hollow underneath some willow trees, and contained 

 two eggs of a dull creamy white colour_, profusely marked 

 with lines of pale brown and dark grey. 



[See Mr. Aplin^s notes on the breeding of this species in 

 Uruguay and the figure of its egg, Ibis, 1894, p. 188, pi. v. 

 fig. 5.— P. L. S.] 



10. Circus macropterus, Vieill. (Arg. Orn. ii. p. 58.) 

 The female of this Harrier in breeding plumage differs 



greatly from the male in having the entire under surface of 

 a deep ferruginous colour. I will procure a specimen and 

 forward it. The nests are placed not far from one another 

 in rush-beds, and are composed of large platforms of dry 

 bulrushes raised above the shallow water and well concealed 

 by the growing rushes above them. The eggs are from 

 three to five in number, of a dull white, coarse background, 

 with an irregular ring of blood-red at the broad end. Some 

 have only a faint blotch, and others are nearly pure white 

 with a few ingrained spots of dirty grey. 



11. BuTEo swAiNSONi, Bp. (Arg. Orn. ii. p. 59, pi. xvi.) 

 Fairly common. All through this winter there has been a 



number of immature birds of this species living about the 

 estancia. 



12. Geranoaetus melanoleucus (Vieill.). (Arg. Orn. ii. 

 p. 64.) 



Uncommon. A few of these Eagles have been here this 

 winter, but they do not remain long in one place. 



13. Phalacrocorax, sp. inc. 



A male obtained Sept. 15th, 1896. Legs black; iris 

 black ; bill dark brown above, tip horn-colour, beneath pale 

 horn-colour ; skin between the mandibles yellow. 



Since I commenced to write these notes I have procured 

 a Cormorant, similar to those observed at Espartilla {cf. Ibis, 



