394 BIRDS OF THE REPUBLIC OF PANAMA — PART 2 



Cerro Pirre, Darien, had the thickened edge of the eyelids red of a 

 shade slightly paler than the breast ; iris brown ; bill deep yellow ; 

 front of tarsus and toes greenish brown ; claws wood brown. Another 

 adult male, collected February 7, 1962, at Cafiita, Panama, differed 

 slightly in having the iris wood brown ; bill light honey yellow ; tarsus 

 dusky neutral gray ; toes olive-brown ; claws dull fuscous. Further 

 slight variation was found in a male shot March 13, 1963, at Armila, 

 San Bias, in which the bare, swollen edge of the eyelids was orange- 

 red ; the iris warm brown ; tarsus and toes light olive-green ; claws 

 dark neutral gray. The inside of the mouth was yellow. 



A female collected February 4, 1962, at El Llano, Panama, had 

 the edge of the eyelid in general black, interrupted by red on the pos- 

 terior margin of the lower third, and dotted with red along the an- 

 terior two-thirds of upper margin; iris light wood brown; maxilla, 

 including the side down to the level of the nostril, and from there 

 forward to the first notch on the cutting edge, black ; rest of the side 

 of the maxilla and the entire mandible light honey yellow ; front of 

 tarsus and upper side of toes dull brown ; side and back of tarsus 

 dusky neutral gray ; claws fuscous-black ; lower surface of toe pads 

 dull honey yellow. 



Measurements. — Males (10 from eastern Panama), wing 153-168 

 (158.6), tail 162-174 (165.3), culmen from base 24.5-26.5 (25.2), 

 tarsus 15.9-17.2 (16.7) mm. 



Females (10 from eastern Panama and northwestern Colombia), 

 wing 152-166 (159.7), tail 159-175 (167.7), culmen from base 23.2- 

 25.5 (24.3), tarsus 15.0-17.5 (16.2) mm. 



Birds from far eastern Darien and through the extensive range in 

 Colombia are slightly larger than those from central Panama. 



Resident. Common through the Tropical Zone from the Canal Zone 

 east to the Colombian boundary on both Pacific and Caribbean slopes. 

 Found to 550 meters on Cerro Pirre. 



These are forest birds that in habitat and general activities are simi- 

 lar to the Massena trogon. The voice is like that of the related species, 

 being a repetition of a single syllable, somewhat sonorous when not 

 too far distant, given slowly at first, and toward the end becoming in- 

 creasingly rapid, until the call terminates in a rapid trill. As a whole 

 the voice differs from that of the companion species massena in higher 

 pitch, and more rapid utterance. As both call from perches concealed 

 among leaves, often it is difficult to identify them. 



I noted that 1 collected March 28, 1946, near Jaque, Darien, was 

 about to lay, but I have made no definite observation as to their breed- 



