no BIRDS OF THE REPUBLIC OF PANAMA PART 3 



Characters. — Slightly duller, darker above ; lighter, more olive-gray 

 on lov^er surface ; tail faintly paler rufous. 



Measurements. — Males (10 from extreme eastern Province of 

 Panama and Darien), wing 61.8-64.5 (63.4), tail 45.6-50.2 (47.9), 

 culmen from base 13.8-15.2 (14.2), tarsus 14.6-15.0 (14.7) mm. 



Females (10 from extreme eastern Province of Panama and 

 Darien), wing 59.9-62.5 (60.7), tail 43.9^6.8 (45.3), culmen from 

 base 13.1-14.8 (13.6). tarsus 14.0-14.8 (14.4) mm. 



Resident. Common in the tropical forests, on the Pacific slope 

 from the Rio Chiman. eastern section of eastern Province of Panama, 

 and Darien ; on the Caribbean slope in eastern San Bias ; to 900 meters 

 on Cerro Sapo, 550 meters on Cerro Pirre, and 1430 meters on Cerro 

 Mali. 



This form is common in Colombia, where it ranges east to the lower 

 Magdalena \"alley and from the Panamanian boundary south along 

 the Pacific slope to northwestern Ecuador. A series from Colombia 

 averages darker above and slightly more olivaceous below than those 

 of Panama, and therefore are not wholly typical of this race. 



SCLERURUS ALBIGULARIS CANIGULARIS Ridgway: 

 Gray-throated Leaf-scraper, Raspahoja Gargantigris 



Sclerurns canignlaris Ridgway, Proc. U.S. Nat. Mus., vol. 18, September 20, 

 1889, p. 542. (Turrialba, Costa Rica.) 



An active ground- feeder ; brown, short tailed, with gray throat 

 and reddish brown breast. 



Description. — Length 155-170 mm. Adult (sexes alike), crown 

 sepia, in some more grayish brown especially on the forehead ; hind- 

 neck, back, scapulars, and wing coverts dull reddish brown ; rump 

 and upper tail coverts chestnut ; wings dark grayish brown ; primary 

 coverts dull black ; tail very dark blackish brown, darker toward the 

 end ; side of head dark, somewhat brownish gray ; upper breast and 

 adjacent sides cinnamon-rufous ; lower breast and abdomen dark 

 grayish brown ; flanks and under tail coverts dull chestnut-brown ; 

 edge of wing cinnamon-rufous like breast ; under wing coverts 

 slightly brownish slate-gray. 



Immature, above brown ; upper breast duller brown. 



Measurements. — Males (9 from Costa Rica), wing 86.1-92.3 

 (89.4), tail 54.0-62.5 (59.7), culmen from base 23.3-24.3 (23.7, 

 average of 7), tarsus 21.7-23.0 (22.4) mm. 



Females (6 from Chiriqui and Costa Rica), wing 83.8-89.6 (87.2), 



