geranoJ:tus melanoleucus 15 



white, marked sparsely over the entire surface with reddish 

 brown, the markings assuming somewhat of the appearance of 

 a ring round what may be taken for the larger end. It 

 measures 2*5 in length by 2*0 inches in breadth. This eg^^ is 

 intermediate between the lar2;est and smallest eo-gs of G, 

 melanoleucus^ and a little larger than the largest egg of 

 B. eryihronotus^ in the British Museum. 



Parasitic on one of these Buzzards I found bird lice (mallo- 

 phaga), pronounced by Mr. E. E. Austen to be Docophorus 

 platystomus. 



The Ona name is '''' KekesliT Had I been able to understand 

 the language of these red men, they could have informed me of 

 what I only subsequently learned in the British Museum — that 

 the bird in brown plumage is the young of this species, for the 

 name they gave me for this was " Kehesh Kofya " / 



GERANOJETUS MELANOLEUCUS (Vieillot) 

 Aguila de la obscura y blanca, A. de la parda, Azara, 



Pdxaroft^ Paraguay y La Plata, i, pp. 61, 65, 1802. 

 Spiz^tUS melanoleucus, Vieillot, N'om. Did. cVHid. Nat., xxxii, 



p. 57, 1819. 

 HaliaBtUS melanoleucus, D'Orbigny, Voy. AmSr. Mend., Ois., p. 76, 



1835. 

 ButeO melanoleucus, Sharpe, Gat. Birds Brit. Mus., i, p. 168, 1874; 



Durnford, Ibis, p. 38, 1877, p. 397, 1878 ; Oustalet, Miss. Sci. Gap Horn, 



Ois., p. 35, 1891. 

 GeranoaetUS melanoleucus, Sdater and Hudson, Argentine Cm., 



ii, p. 64, 1889. 



Habitat. — Columbia and Brazil, to Tierra del Fuego. 



? , Rio McClelland Settlement, 25th N"ov. 1904. 



Iris — light brown ; bill — bluish white shading into dark grey at tip, 

 nostrils — yellowish ; legs — pale yellow. 



Life measurement, from wing tip to wing tip, 5 ft. 9f in. 



Comparatively few expeditions record the Grey Eagle, and 

 none, I think, hitherto from the island. It is rare on the 



