486 BIRDS OF THE REPUBLIC OF PANAMA — PART 3 



Description. — Length 120-126 mm. Adult (sexes alike), above 

 dull greenish olive; side of head and lores dull, dark gray, with the 

 eyelids edged with white, and an obscure white line on the upper 

 margin of the loral space, running from the eye toward the base of 

 the nostril ; wings dull black ; middle and greater coverts and secon- 

 daries edged with bufify white producing two prominent bars ; outer 

 webs of secondaries darker buff ; tail feathers edged obscurely on 

 the outer webs toward the base with buffy brown ; throat whitish ; 

 breast with a broad band of greenish olive ; lower breast and abdomen 

 clear light yellow, or in some yellowish white ; edge of wing yellow. 



A male, collected January 30, 1961, at 450 meters on the base of 

 Cerro Pirre, had the bill fuscous-black, changing to fuscous on the 

 base of the mandible ; iris dark brown ; tarsus and toes fuscous. 



Measurements. — Males (10 from eastern Province of Panama, 

 Darien, and northern Colombia), wing 57.8-64.9 (60.3), tail 51.2- 

 57.6 (53.8), culmen from base 13.4-13.9 (13.6), tarsus 14.3-15.6 

 (14.9) mm. 



Females (5 from eastern Province of Panama and northern Co- 

 lombia), wing 57.6-62.0 (59.4), tail 50.2-53.5 (51.1), culmen from 

 base 13.0-14.0 (13.3), tarsus 13.5-15.5 (14.5) mm. 



Resident. Known in Panama near San Antonio, beyond Chepo on 

 the lower Rio Bayano, eastern Province of Panama, and on Cerro 

 Pirre, Darien. 



The species was described from two males taken by E. A. Goldman 

 at 550 meters elevation near Cana, Cerro Pirre, March 19 and May 

 22, 1912. Another male, secured by Rex Benson at the type locality, 

 June 25, 1928, is in the collections of the Museum of Comparative 

 Zoology. A male and two females collected by Austin Smith are 

 marked "Port Antonio, Rio Chepo," March 16, 20, and 23, 1927. 

 Two of these, male and female, are now in the Peabody Museum at 

 Yale, and the third, a female,, in the American Museum of Natural 

 History. The locality is on the lower Rio Bayano, 5 kilometers south- 

 east of Chepo. 



The only other record to date is of a male that I found on Janu- 

 ary 30, 1961, at 450 meters elevation on the southern slope of Cerro 

 Pirre, near the headwaters of the Rio Seteganti. It was with a 

 scattered group of small birds that ranged through the tops of the 

 lower undergrowth in heavy forest. It was alert and active in moving 

 through the branches, and I was interested to note that in perching, 

 the body was held less upright than is usual in species of Empidonax , 

 which otherwise it resembles superficially. The stomach of one of 



