26o BIRDS OF THE REPUBLIC OF PANAMA PART 3 



An adult male, collected on Cerro Mali, Darien, February 20, 1964, 

 had the iris dark brown ; bill black ; front of lower half of tarsus and 

 the top of the middle anterior toes brownish white ; upper half, sides, 

 and back of tarsus and the outer toes, dark brown ; three anterior 

 claws fuscous-brown ; posterior claw darker, blacker ; concealed skin 

 of the region around the ear opening dull yellow. 



Measurements. — Males (10 from the slopes of Cerro Tacarcuna, 

 and its spur Cerro Mali. Darien), wing 52.5-57.7 (54.2), tail 36.8- 

 42.9 (40.3, average of 9), culmen from base 14.0-15.2 (14.4), tarsus 

 20.7-22.0(21.4) mm. 



Females (7 from the same localities as the males), wing 51.0- 

 57.8 (53.9), tail 33.8-41.0 (38.6. average of 6), culmen from base 

 14.2-15.4 (14.3), tarsus 20.6-22.7 (21.5) mm. 



Resident. Found in Darien on the slopes of Cerro Tacarcuna, in- 

 cluding Cerro Mali, from 1 100 to 1460 meters. 



In February 1964, we found these small birds common along the 

 ridge of Cerro Mali and the adjacent slopes of Cerro Tacarcuna. 

 They were seen in pairs, usually around fallen tree trunks, always low 

 down on or only a short distance above the forest floor. Occasionally 

 one paused to give a piping song, a repetition of a single note, tseety- 

 seety seety seety. This was heard often when the bird was concealed 

 in the low ground cover. We found them regularly on the high crest 

 of the main ridge of Tacarcuna where they ranged along the inter- 

 national boundary in both Panama and Colombia. Always, in appear- 

 ance the rather heavy body and short tail suggested a wren. In 

 handling them during preparation of study skins I found the body as 

 a whole elongated with the breast muscles and the keel of the sternum 

 only slightly developed. The leg muscles were large and strong. The 

 broad operculum over the nostril was somewhat soft, and larger than 

 it appears in study skins, as it shrinks slightly in size as the specimen 

 dries. 



SCYTALOPUS VICINIOR Zimmer: Narino Tapaculo, 

 Tapaculo Piquigrueso 



Scytalopus panamensis I'icinior Zimmer, Amer. Mus. Nov., no. 1044, October 11, 

 1939, p. 11. (Ricaurte, 1525-1825 meters, Narino, Colombia.) 



Bill short, heavy ; crown wholly sooty black ; no superciliary line. 



Description. — Adult male, crown and hindneck dark gray, basally 

 edged with sooty black (producing a faintly mixed pattern) ; upper 

 back and scapulars somewhat browner ; lower back dark chestnut- 

 brown ; rump and upper tail coverts brighter brown ; barred narrowly 



