408 BIRDS OF THE REPUBLIC OF PANAMA — PART 2 



ish green ; rest of maxilla black ; tarsus and toes pale brownish neutral 

 gray ; claws brownish neutral gray. 



Measurements. — Males (3 from Cerro Mali and Cerro Tacarcuna, 

 Darien), wing 121.3-122.4 (121.9), tail 137.4-139.8 (138.4), oilmen 

 from base 17.9-18.2 (18.0), tarsus 14.2-15.1 (14.7) mm. 



Female (1 from Cerro Mali, Darien), wing 121.0, tail 140.0, oil- 

 men from base 18.7, tarsus 14.4 mm. 



Resident. Fairly common across the higher slopes of Cerro Mali 

 and Cerro Tacarcuna (1,400-1,460 meters elevation). 



As a race of the wide-ranging collared trogon had been described 

 from Cerro Pirre in eastern Darien it was no surprise to encounter 

 this species in the higher levels of the eastern end of the Serrania 

 del Darien. It was wholly unexpected, however, to find that the 

 affinities of this population seem closer to the birds of western 

 Panama and Central America, rather than to those of the mountains 

 of nearby Colombia. 



The males of the Tacarcuna race, all apparently adult, have the 

 terminal white tip on the outer rectrices slightly broader than in 

 the western subspecies puella, and so appear somewhat intermediate 

 toward Trogon c. virginalis of western Colombia to the south. The 

 female is definitely duller, more olive brown. 



In habits and calls these eastern Darien birds resemble those 

 with which I had been familiar in Chiriqui. Stomachs of those col- 

 lected were filled with remains of drupes, with addition in one of 

 fragments of a large beetle, and in another of an orthopteran. 



A nest was located in a shallow hole, about 2 meters above the 

 ground in a stub that stood in the forest. The 2 eggs, partly incubated, 

 collected February 28, 1964, that rested on the decaying wood in the 

 bottom of the cavity, are white, with a smooth surface and slight 

 gloss. One is between subelliptical and oval, the other more nearly 

 short oval . They measure 28.8 X 22. 1 and 28. 5 X 23 .0 mm. 



TROGON COLLARIS EXTIMUS Griscom 



Trogon collaris extimus Griscom, Bull. Mus. Comp. Zool., vol. 69, no. 8, April 

 1929, p. 162. (Cana, Cerro Pirre, Darien.) 



Characters. — Definitely smaller than the other races found in 

 Panama and T. c. virginalis of western Colombia ; male with the 

 terminal white on the three outer rectrices broad, as in virginalis and 

 the other South American races. 



Measurements. — Males (5 from Cerro Pirre), wing 108.0-118.0 



