FAMILY TYRANNIDAE 4II 



Description. — Length 155-165 mm. Adult (sexes alike), crown 

 rather dark gray with the forehead dotted with white ; concealed 

 crown patch bright orange-red, with base yellow ; broad superciliary 

 white : back, scapulars, rump, and lesser wing coverts olive-green ; 

 upper tail coverts, grayish brown; wings (except lesser coverts) 

 grayish brown with pale yellowish olive edgings ; tail grayish brown ; 

 lores and side of head dusky-brown ; throat and upper foreneck white ; 

 rest of under surface with axillars and under wing coverts bright 

 yellow. 



Immature, like adult but without the orange-red crown patch ; wings 

 and tail narrowly edged with cinnamon. 



In several males the iris varied from light bufify brown to mouse 

 brown ; bill black ; tarsus and toes fuscous-black to black ; claws black. 



Measurements. — Males (10 from Chiriqui. Code, Los Santos, 

 Province of Panama, and Canal Zone), wing 86.8-89.5 (88.3), tail 

 67.0-72.9 (69.8), culmen from base 15.9-17.1 (16.4), tarsus 18.2- 

 18.8 (18.5) mm. 



Females (10 from Bocas del Toro, Chiriqui, Los Santos, Herrera, 

 Province of Panama, and Canal Zone), wing 80.2-85.1 (83.0), tail 

 62.3-68.1 (65.4). culmen from base 15.7-16.9 (16.1), tarsus 18.1- 

 19.0 (18.5) mm. 



Resident. Common locally, in the lower Tropical Zone in western 

 and central Panama ; on the Pacific slope, from western Chiriqui 

 to the Rio Maje in the eastern sector of the Province of Panama, 

 including the western side of the Azuero Peninsula (Rio Mariato), 

 and the southern end in southwestern Los Santos ( Rio Guanico, at 

 Las Palmitas) ; on the Caribbean side from western Bocas del Toro 

 to the lower Chagres Valley in the eastern sectors of the Provinces of 

 Panama and Colon; in western Chiriqui to 1300 meters near El 

 Volcan, casually to 1900 meters above Cerro Punta. 



There are two records for the Azuero Peninsula, one a bird taken by 

 Aldrich ( Scient. Publ. Cleveland Mus. Nat. Hist., vol. 7, 1937, p. 

 102) on the western side at the Rio Mariato, inland from the lower 

 Golfo de Montijo, and one that I collected on January 21, 1962, on the 

 Rio Guanico, near Las Palmitas. in southwestern Los Santos. I have 

 not found it in extensive travel on the eastern side of the peninsula. 



Currently the range of the race cohnnbianus has been considered to 

 be continuous from southwestern Costa Rica and western Bocas del 

 Toro through Panama, northern Colombia, and northern Venezuela. 

 In the present survey, in Panama I have no record of it for the 

 whole of Darien. For Comarca de San Bias also there appear to be no 

 specimens, the only report being sight records by D. Sheets at Puerto 



