120 Mr. C. H. B. Grant on Birds collected in Argentina, 
Ad. Irides hazel; bill and legs and toes black. 
Young. Irides pale hazel; bill black, gape pale yellow; 
legs and toes sooty. 
One of the December and the January and February adults 
are moulting. 
One of the young birds in first plumage shot in December 
has the bases of the feathers of the crown yellow ; but this is 
quite exceptional, as all the others have black crowns. 
Several of the young taken in February and March are 
moulting into the adult dress, whilst others, no doubt of a 
later brood, are still in young plumage. 
This is the commonest of the Tyrannidse in the Ajo 
district, where it is resident. It is both insectivorous and 
carnivorous, and is frequently seen picking the meat off 
skins and carcases. When I have broken open the nests of 
Oven-birds, looking for eggs, and left the young exposed, 
this bird has more than once eaten them up. 
The nest is a large untidy structure of wool, grass, and 
other rubbish placed in any convenient situation in a bush, 
tree, or on the top of a post, the entrance being at the side. 
Five eggs appear to be the complete clutch, though a set of 
six is in Miss Binnacles' collection. 
93. Myiodynastes solitarius. 
Myiodynastes solitarius Scl. Cat. B. xiv. p. 185 ; Arg. Orn. 
i. p. 150. 
a. A ad. Near Villa Pilar, Paraguay. Nov. 7, 1909. 
“ Irides brown ; bill black, fleshy at the base of the lower 
mandible ; legs and toes purplish brown.” 
94. Myiobius NjEvius. 
Myiobius ncevius Scl. Cat. B. xiv. p. 209; Arg. Orn. i. 
p. 151. 
a, b. $ ? ad. Near Santa Elena, N. Argentine. Nov. 15, 
1909. 
Irides hazel; bill, upper mandible dark, lower light 
brown; legs and toes almost black. 
The crest in the male is lemon-yellow and in the female 
cinnamon. 
