340 Mr. C. H. B. Grant on Birds collected in Argentina , 
This species was commonly observed in all the 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 Bunnacles, taken on the 26th 
of October, 1909, at Ajo. These measure : axis 2*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 hunco. 
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. 
Fam. Plataleid/e. 
205. Plegadis guarauna. 
Plegadis guarauna Sharpe, Cat. B. xxvi. p. 34; Arg. Orn. 
ii. p. 109. 
Los Ynglases, Ajo. 
Sept. 21, 1908. 
Feb. 24, 1909. 
Jan. 25, 1909. 
April 23, 1909. 
Jan. 18, 1910. 
Aug. 8, 1909. 
a . $ ad. 
b. ? ad. „ „ 
c. d, e. S young. „ „ 
/• ? ad. „ „ 
ff. ? ad. „ „ 
h. $ imm. Tebicuari, Paraguay. 
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, and 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 was 
