488 



BIRDS OF THE REPUBLIC OF PANAMA PART 3 



yellow, the flank feathers elongated; under tail coverts pale dull 

 yellow, mixed faintly with dull brown ; axillars and under wing 

 coverts pale yellowish white; inner webs of wing feathers edged 

 lightly with pale dull brown (a marking absent in some). 



Adult female, like the male, but usually with the area of the crown 



Figure 42. — Sulphur -rumped flycatcher, moscareta rabadilla azufrada, 

 Myiobius sulphureipygins aiireatus. 



patch indicated by a wash of dull rufous-brown on the bases of 

 the feathers, rarely with a partly developed yellow patch. 



Juvenile, similar to the adult, but with the brown of breast and 

 sides paler. 



A female, taken at Armila, San Bias, February 22, 1963, had the 

 iris dark brown ; maxilla and tip of mandible dull black ; rest of 

 mandible flesh color ; tarsus and toes dark neutral gray ; claws dull 

 black. 



Measurements. — Males (10 from Panama), wing 64.5-68.3 (66.3), 



