112 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



and throat rufous-tawny, the chin occasionally grayish white, chang- 

 ing on the lower foreneck and across the upper breast to rufous- 

 chestnut ; rest of under surface plain brown, somewhat rufescent on 

 flanks and under tail coverts ; under wing coverts grayish brown, 

 edged in part with tawny. 



Immature, with colors duller ; foreneck and breast feathers with 

 paler shaft streaks, and indefinite edgings of dusky or dusky-brown. 



The species as a whole is found from southern Mexico through 

 Central America to Colombia and Venezuela, south to central Brazil, 

 with seven geographic races currently recognized. The bird is rare 

 to uncommon locally in Panama where, from the specimens examined, 

 three of the races may be identified. The nominate form Sclerurus 

 mexicaniis mexicanus, with a range from Veracruz and Puebla, 

 southern Mexico, through Guatemala and Honduras, compared to 

 those of Costa Rica and Panama, is marked by longer, more slender 

 bill, and by the greater extension and brighter hue of rufous over 

 the entire foreneck and breast. 



SCLERURUS MEXICANUS PULLUS Bangs 



Sclerurus mexicanus pulliis Bangs, Proc. New England Zool. Club, vol. 3, 

 January 30, 1902, p. 45. (Boquete, elevation 1525 meters, Chiriqui.) 



Characters. — Dark above and below, and slightly more reddish 

 brown, with the rump and upper tail coverts chestnut. 



A female, taken at the head of Rio Guabal, Caribbean slope of 

 northern Code, March 1, 1962, had the iris dark brown; maxilla, 

 and sides and tip of mandible, black ; gonys, except at distal end, dull 

 brownish white ; tarsus and toes fuscous with the narrow posterior 

 line of the tarsus paler ; claws dull black. 



Measurements. — Males (10 from Chiriqui, Veraguas, and Costa 

 Rica), wing 73.8-80.0 (78.0), tail 50.7-58.8 (53.9), culmen from 

 base 21.5-25.0 (23.0), tarsus 21.5-22.8 (22.0) mm. 



Females (9 from Chiriqui, Veraguas, Code, and Costa Rica), 

 wing 74.5-79.5 (76.8), tail 48.8-54.8 (52.3), culmen from base 

 22.2-23.5 (22.8), tarsus 21.2-22.5 (21.9) mm. 



Resident. Rare ; recorded on the Pacific slope in Chiriqui on the 

 western base of the volcano at Barriles near the Rio Chiriqui Viejo, 

 on the eastern face above Boquete, eastward in the Cordillera de 

 Tole, and in Veraguas near Santiago ; on the Caribbean side in 

 Bocas del Toro at Almirante, in northern Veraguas (Calovevora), 

 and in northern Code at 475 meters on the head of the Rio Guabal. 



The record for Santiago is from one of the early collections of 



