FAMILY TYRANNIDAE 599 



wing 60.4-63.3 (61.7), tail 44.6-48.5 (46.7), culmen from base 

 13.2-14.8 (13.9), tarsus 14.4-15.6 (15.3) mm. 



Females (8 from eastern Chiriqui, Veraguas, and Isla Coiba), 

 wing 56.2-59.6 (58.1), tail 41.8-45.6 (43.6), culmen from base 

 13.0-14.5 (13.7). tarsus 14.1-15.1 (14.6) mm. 



Resident. Locally fairly common on the Pacific slope from eastern 

 Chiriqui through Veraguas, including the western side and the 

 southern end of the Azuero Peninsula (Rio Oria near Los Asientos ; 

 Rio Guanico, near Las Palmitas) Isla Coiba; Islas Gobernadora 

 and Cebaco, in the southern Golfo de Montijo. 



Near Sona and Puerto Vidal in May and early June I noted them 

 regularly in gallery forest, usually on open perches in the tops of 

 undergrowth. Males displayed regularly by quickly raising one wing 

 without spreading it vertically above the back, holding it there for 

 a second or two and then retracting it to its normal position. They 

 were fairly common also on Isla Cebaco where we caught them 

 regularly in mist nets. On Isla Coiba they were seen most frequently 

 in undergrowth and the lower treecrown in the heavily shaded 

 forest, where their subdued colors and their usually quiet attitude 

 made them inconspicuous. The three males taken on Coiba have 

 slightly longer wings and tails than the series from the mainland, 

 but do not differ in color. 



The range of the race liitescens covers the transition between the 

 darker population of western Panama and the paler parca, distrib- 

 uted from the western sector of the Province of Panama and of 

 Colon east to Colombia. 



PIPROMORPHA OLEAGINEA PARCA (Bangs) 



Mionectes oleagineus parens Bangs, Proc. New England Zool. Club, vol. 2, 

 September 20, 1900, p. 20. (Lion Hill, Canal Zone, Panama.) 



Smaller ; lighter, brighter olive-green above ; breast, abdomen, 

 sides, flanks, and under tail coverts paler, more cinnamon-buff; 

 f oreneck and upper breast decidedly paler grayish ; middle and 

 greater coverts distinctly edged with cinnamon-buff; pale edgings 

 on distal margins of secondaries lighter, more evident. 



A male, taken at Chimin, February 16, 1950, had the iris dark 

 brown ; base of bill dull orange-brown ; rest blackish brown ; tarsus 

 mouse brown. In another of this sex, at Mandinga, San Bias, 

 February 12, 1957, the iris was also dark brown; maxilla and tip 

 of mandible dusky neutral gray ; base of mandible dull orange ; 

 tarsus fuscous ; toes dull neutral gray ; gape very dull orange ; inside 



