l88 BIRDS OF THE REPUBLIC OF PANAMA PART 4 



neutral gray; line of commisure on maxilla narrowly edged with 

 neutral gray; rest of maxilla black; tarsus, toes, and claws dusky 

 neutral gray. A male caught in a mist net at the head of the Rio Guabal, 

 Code on February 26, 1962, had the iris dark brown; mandible light 

 neutral gray; maxilla black; tarsus, toes, and claws dusky neutral gray. 

 The tongue of one taken March 21, 1951, at Cerro Campana, Province 

 of Panama, had dark spots on either side of the base like those of 

 Ramphocaenus and Polioptila but relatively smaller than in the latter. 



Measurements. — Males (10 from Province of Panama, Code, and 

 Colon), wing 51.0-55.0 (53.0), tail 25.3-30.3 (28.4), culmen from 

 base 17.4-19.4 (18.2), tarsus 21.1-25.8 (23.3) mm. 



Females (10 from Province of Panama and Colon), wing 48.8-55.7 

 (51.8), tail 22.8-31.9 (26.7), culmen from base 16.9-19.9 (18.1), tarsus 

 21.8-24.6 (22.9) mm. 



Resident. Uncommon in humid forest lowlands, occasionally up 

 to 900 m, on the Caribbean slope from Bocas del Toro to San Bias, and 

 on the Pacific slope at Cerro Campana and Cerro Azul. The Smith- 

 sonian has specimens from Bocas del Toro: Changuena River (720 m) ; 

 Code: head of the Rio Guabal at Tigre (475 m) , and El Uracillo on the 

 Rio Indio; Colon: Chilar, Boca del Rio Indio, Cerro Bruja (north side, 

 600 m), and the Peluca Hydrographic Station on the Rio Boqueron; 

 Province of Panama: Cerro Campana (south face, 900 m) and Cerro 

 Azul; Canal Zone: Alajela; San Bias: Mandinga and Armila. 



Cory and Hellmayr (Cat. of Birds of the Americas, 1924, p. 211) 

 give the range of this subspecies in Panama as "western Panama ( Vol- 

 can de Chiriqui, Santiago de Veraguas, Lion Hill Station)." Paynter 

 (Check-list Birds World, vol. 10, 1964, p. 444) also says "western 

 Panama," without assigning birds of central Panama to any race. Ol- 

 son (Proc. Biol. Soc. Wash. vol. 93, 1980, pp. 68-74) has found that 

 this race extends along the entire Caribbean slope of Panama to north- 

 western Colombia at Acandi on the Gulf of Uraba (USNM no. 

 427204), and that Griscom's (Bull. Mus. Comp. Zool., vol. 72, no. 9, 

 1932, p. 366) identification of specimens from San Bias as the Colom- 

 bian race magdalenae was erroneous. 



E. A. Goldman found the nest and eggs of this bird on June 7, 1911, 

 in Colon at Cerro Bruja, where it was "a rather common species at 

 elevations up at least to 2000 feet." His previously unpublished notes 

 say "the nest was in the center of a loose mass of leaves and trashy 

 material spread over an area one foot across on the flat, horizontal up- 

 per side of a large palm leaf four feet from the ground. The nest was 



