YELLOW-BROWED TYRANT © 153 
covered with tall grasses, and perches in a conspic- 
uous place, from which it darts at passing insects 
like a Flycatcher. 
Mr. Gibson found its nest on the ground amongst 
herbage, and describes it as a neat structure of dried 
grass, containing three white eggs with a faint cream- 
coloured tinge. 
YELLOW-BROWED TYRANT 
Sisopygis icterophrys 
Above bright olive-green, head rather greyish, lores and super- 
ciliary stripes yellow; wings blackish, broad ends of coverts and 
outer edges of secondaries dirty white; tail blackish; beneath 
bright yellow, sides of breast and flanks olivaceous; under wing- 
coverts whitish; bill dark horn-colour; feet black; length 6.1 
inches. 
THIs small and pretty Tyrant-bird is quite common 
in the woods along the Plata, and is also seen a great 
deal in orchards and groves in the cultivated dis- 
tricts. In Buenos Ayres it is a summer visitor, 
appearing there in October, and is a shy, solitary 
bird, which catches insects on the wing, and rarely 
visits the ground. 
The nest is placed in a tree, ill-concealed, and 
very shallow ; it is built of fine sticks, and lined with 
fine grass, horsehair, and feathers. The eggs are 
four, pointed, pale cream-colour, with large dark 
red spots, chiefly at the larger end. 
