FAMILY TYRANNIDAE 467 



middle coverts tipped lightly with grayish to dull white ; secondaries 

 and inner primaries edged and tipped lightly with dull white ; tail 

 grayish brown, with outer web of outer rectrix white ; a definite white 

 eye-ring, interrupted in center above ; bare edge of eyelids black ; 

 lores indistinctly grayish ; side of head grayish brown, fading below 

 into the dull grayish buffy white of chin and throat, the latter lined 

 indistinctly with dull white ; breast and sides pale grayish olive- 

 brown ; rest of under surface pale buffy yellow ; axillars and under 

 wing coverts dull bufify white, becoming dull buff on edge of wing ; 

 inner webs of wing feathers edged with dull buff. 



Juvenile, back dull reddish brown ; wing bands cinnamon-bufif ; 

 chin and throat dull white ; chest band cinnamon-buff ; abdomen, 

 flanks, and under tail coverts faintly buffy white. 



A female, taken at 2650 meters on the west face of Volcan Baru, 

 Chiriqui, March 4, 1965, had the iris dark brown; maxilla black; tip 

 of mandible fuscous ; base of mandible dull brownish yellow ; tarsus, 

 toes, and claws black ; inside of mouth orange. 



Measurements. — Males ( 10 from western Chiriqui and Costa 

 Rica), wing 58.6-62.7 (60.5), tail 49.0-53.5 (51.3), culmen from 

 base 11.0-12.0 (11.6), tarsus 16.0-16.5 (16.2) mm. 



Females (10 from western Chiriqui and Costa Rica), wing 56.1- 

 57.4 (56.7), tail 46.6-48.9 (47.6), culmen from base 10.2-11.8 

 (11.0), tarsus 15.7-16.3 (16.0) mm. 



Resident. Found locally on the mountain slopes of western 

 Chiriqui in the upper Subtropical and Temperate zones from 1800 

 to over 3000 meters; recorded at Mirador (below 2750 meters) 

 on the Caribbean slope in Bocas del Toro. 



Above Cerro Punta I found several of these attractive flycatchers 

 in a pasture partly grown with brush, where sun warmed the mist- 

 filled air. They rested on low perches half a meter above the ground 

 or sought protection in a small depression where there was shelter 

 from the cold wind. On another day one perched on small twigs 

 projecting from a deadfall in a recently made clearing in heavy forest. 

 At rest they twitch the tail quickly, while watching alertly for passing 

 insects. 



Little has been recorded regarding this species other than color 

 descriptions or the listing of specimens. Schonwetter (Handb. Ool., 

 lief. 15, 1968, p. 106) listed three eggs in the Nehrkorn and British 

 Museum collections, with measurements of 1 7.5-18.0 X 13.5-14.7 mm. 

 attributed to "Costa Rica, W. Panama." 



