340 Mr. C. 11. B. Grant on Birds collected in Argentina, 



This species was commonly observed in all tlie localities 

 visited ; it is resident and breeds in the Ajo district, where 

 it frequents both the swamps and open camp singly or in 

 pairs, and feeds largely upon frogs^ toads, lizards, and eels. 

 I did not succeed in obtaining the eggs ; but a set of five 

 are in the collection of Miss Runnacles, taken on the 26tli 

 of October, 1909, at Ajo. These measure : axis 3*95 to 

 3-0 in., diam. 2-0 to 2*09. 



The nest was in a deep canadon, about three feet high ; 

 it was made of sticks and dry bunco. 



204, Tantalus loculator. 



Tantalus loculator Arg. Orn. ii. p. 108 ; Sharpe, Cat. B. 

 xxvi. p. 321. 



a. ? ad. Los Ynglases, Ajo. Mar. 11, 1909. 



Irides dark brown ; bill dark bluish horn-coloured, vertex 

 slightly red ; bare skin of head and neck black with white 

 scales; legs blue-slate-coloured ; feet whitish flesh-coloured. 



Fain. Plataleid/E. 



205. Plegadis guarauna. 



Pleyadis guarauna Sharpe, Cat. B. xxvi. p. 34; Arg. Orn. 

 ii. p. 109. 



a. ? ad. Los Ynglases, Ajo. Sept. 21, 1908. 



h. ? ad. „ „ Feb. 24, 1909. 



c, d, e. ^ young. „ „ Jan. 25, 1909. 



/. ? ad. „ „ April 23, 1909. 



g. ? ad. „ „ Jan. 18, 1910. 



h. (^ imm. Tebicuari, Paraguay. Aug. 8, 1909. 



The adult in September is in breeding-dress. 



Irides rich red ; orbits, lores, and throat crimson ; bill 

 ashy ; legs and toes dark purple, dull crimson at joints. 



The adults taken in January, February, aud April are all 

 assuming the winter-dress, the under parts apparently 

 changing to the colour of the following specimen. 



Irides crimson, lores and chin crimson ; bill ashy, tip 

 reddish ; legs and toes dark purple. 



This is the common Ibis of the Ajo district^ and wn^ 



