224 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



Females (10 from Darien, western Colombia, and northern Ecua- 

 dor), wing 86.2-90.8 (88.5), tail 50.5-56.8 (53.4), ctilmen from 

 base 23.0-27.0 (24.8), tarsus 36.5-41.7 (38.7) mm. 



A female, from Cerro Mali, Darien, February 21, 1964, had the 

 iris wood brown ; bill black ; tarsus and toes fuscous, claws fuscous- 

 black. 



Resident. Recorded from Subtropical Zone forests on Cerro Pirre, 

 and the Cerro Mali spur of Cerro Tacarcuna, Darien. 



The first report of this little-known form for Panama was a 

 pair collected by E. A. Goldman at 1525 meters on Cerro Pirre, 

 March 5, 1912. Two in the American Museum of Natural History 

 were taken by A. W. Anthony and his party at the old Tacarcuna 

 village site on the base of Cerro Tacarcuna, March 7 and 27, 1915. 



From Cerro Mali, at 1430 meters I have a female caught on Febru- 

 ary 21, 1964, in a mouse trap set in the forest. C. O. Handley, Jr., 

 secured two others there, captured also in traps, on February 12 

 and 18, 1964. These were preserved entire in formaldehyde. 



Anthony's specimens from eastern Darien were placed by Zimmer 

 (Amer. Mus. Nov., no. 584, 1932, p. 9) with typical rufipectus. In 

 the present review, in which I have had the advantage of study of 

 the type and other specimens of nominate rufipectus in London, they 

 differ from that race and agree with carrikeri. They were therefore 

 correctly listed by Griscom (Bull. Mus. Comp. Zool., vol. 78, 1935, 

 p. 336). 



GYMNOPITHYS BICOLOR (Lawrence): Bicolored Ant-bird, 

 Hormiguero Bicolor 



Size medium, with heavy body and short tail ; reddish brown 

 above and on the sides ; breast and throat white. 



Description. — Length 132-145 mm. Side of head surrounding the 

 eye bare, without feathers. Adult (sexes alike), upper surface 

 chestnut-brown ; inner webs of wing feathers dusky, outer webs 

 chestnut-brown ; side of head below the bare area black ; throat, fore- 

 neck, center of breast and abdomen white ; sides from neck to flanks 

 lighter brown than back ; in some, spots of this paler color along side 

 of neck and breast ; under tail coverts like flanks, but in some tipped 

 with buff or white ; under wing coverts mixed huffy brown and white. 



Juvenile, plumage of upper surface chestnut-brown, with wing 

 coverts tipped indistinctly with rufous ; under surface dull grayish 

 brown, with the throat bare but edged with white ; breast basally 



