FAMILY FRINGILLIDAE 



597 



the iris reddish brown; bill black; tarsus dull black; mottled indistinctly 

 on front and inner side with dull white; toes fuscous-brown; claws dull 

 brown. A juvenile taken the same day had the extreme tip of bill, gape, 

 and inside of mouth dark yellow, clouded on inside of tip of maxilla 

 with dull black; mandible dusky neutral gray, marked with dull yellow 

 on sides of gonys; maxilla, except as described, black; tarsus and toes 

 dark dull brown; claws fuscous-brown tipped faintly with dull yellow. 



Measurements. — Males (10 from Darien), wing 81.0-86.3 (84.2), 

 tail 76.8-87.2 (82.5), oilmen from base 16.9-19.7 (18.0), tarsus 26.4- 

 29.6 (27.9) mm. 



Females (8 from Darien), wing 75.5-83.5 (79.0), tail 71.7-85.9 

 (78.7), oilmen from base 16.7-18.3 (17.6), tarsus 27.3-28.6 (27.9) 

 mm. 



Resident. Fairly common but local in the highlands of eastern 

 Darien, where it has been collected at Cerro Mali, Cerro Tacarcuna, 

 Cana, and Cerro Pirre. Ridgely (in lift.) observed it in July 1975 in 

 cloud forest near the summit of Cerro Quia (900 m). Some of those 

 taken at Cerro Mali were at 1410 m. This race also has an extensive 

 range in Colombia, Venezuela, Ecuador, and Peru. Variation within 

 the race is discussed by Parkes (Condor, 1959, pp. 156-157). On 

 February 24, 1964, I collected a juvenile at Cerro Mali; here the breed- 

 ing season evidently begins earlier than in western Panama. 



LYSURUS CASTANEICEPS (Sclater): Sooty-faced Finch, 

 Pinzon Carisucio 



Buarremon castaneiceps Sclater, 1859, Proc. Zool. Soc. London, 27, p. 441. (Rio 

 Napo, Ecuador.) 



Medium size; crown reddish brown; upper surface olive-green; side 

 of head and throat blackish gray, spotted with white; upper breast, 

 sides, and flanks olive-green; rest of undersurface bright yellow. 



Description. — Length 150-171 mm. Adult (sexes alike), crown 

 reddish brown; upper surface, including wing coverts, olive-green; 

 remiges and rectrices dusky brown, with outer webs edged olive-green; 

 side of head, including lores and narrow line above eye, and throat 

 blackish gray; upper breast, sides, flanks, and undertail coverts olive- 

 green; rest of undersurface bright yellow. 



Juvenile, crown dull brownish olive; rest of upper surface olive- 

 green; chin, upper throat, and side of head blackish; feathers on ramal 

 area lightly marked with white near center, producing partly concealed 

 spots; undersurface olive-green washed lightly with yellow on center 

 of breast. 



