FAMILY TYRANNIDAE 561 



dark to light olive-green ; rump usually faintly paler ; wings dusky ; 

 primaries edged with olive-green ; secondaries bordered with olive- 

 yellow; greater and middle coverts tipped narrowly and indistinctly 

 with dull olive-yellow ; tail grayish brown, edged on the lateral 

 feathers, especially at the base, with olive-green, in unworn state 

 tipped lightly with dull white ; lores grayish white, with a dusky 

 central spot anterior to the eye ; upper and lower eyelids lined nar- 

 rowly with white, that on the upper lid is continuous with a post- 

 ocular streak of grayish white ; auricular region dusky with indefinite 

 shaft lines of white ; chin and throat dull white basally, washed with 

 pale gray ; f oreneck and upper breast dull gray, lined indefinitely with 

 whitish ; lower breast, abdomen, sides, flanks, and under tail coverts 

 light yellow ; axillars and under wing coverts somewhat paler yellow ; 

 inner webs of wing feathers dull white. 



Female, similar, but with yellow crown patch of lesser extent. 



Juvenile, upper surface dull wood brown, slightly darker on the 

 crown ; crown patch absent or faintly indicated by whitish bases on 

 a few feathers ; breast darker gray. 



A male, taken at Las Palmitas, Los Santos, January 25, 1962, had 

 the iris dark brown ; base of mandible dull brownish white ; rest of 

 bill brownish black ; tarsus and toes fuscous-black. In a female, at 

 Juan Mina, Canal Zone, January 12, 1961, the iris was wood brown; 

 base of mandible light mouse brown ; rest of bill neutral gray; tarsus 

 and toes dark neutral gray ; claws black. 



Measurements. — Males (10 from Chiriqui, Los Santos, eastern 

 Province of Panama, and Pearl Islands), wing 64.5-71.6 (67.8), 

 tail 58.2-66.0 (62.0), culmen from base 11.8-13.4 (12.5), tarsus 

 18.2-19.8 (18.9) mm. 



Females (10 from Chiriqui, Canal Zone, and Pearl Islands), wing 

 61.0-64.4 (63.1), tail 52.9-59.3 (56.7), culmen from base 11.9-12.9 

 (12.2), tarsus 17.0-18.7 (17.8) mm. 



Resident. Fairly common locally in forest areas in the Tropical 

 Zone and the lower edge of the Subtropical Zone, on the Pacific 

 slope, from western Chiriqui, eastward through Veraguas, the Azuero 

 Peninsula, the southern Canal Zone, and the eastern sector of the 

 Province of Panama to the lower Rio Bayano (Chepo, San Antonio) ; 

 rarely to western Darien (Garachine) ; Archipielago de las Perlas 

 (Islas San Jose, del Rey, Saboga, Viveros, Bayoneta) ; Isla Urava, 

 Bahia de Panama ; Isla Verde, in the northern end of Golfo de 

 Montijo, Veraguas; Isla Coiba; to 1525 meters above Boquete and 

 El Volcan, Chiriqui. 



