498 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



Immature, both sexes, back and scapulars tipped narrowly with 

 buff and barred with black. 



A female, taken at Pucro, Darien, February 3, 1964, had the iris 

 mouse brown ; maxilla fuscous ; mandibular rami dull honey yellow ; 

 rest of mandible dull wood brown, changing to horn color on the 

 basal half of the gonys ; tarsus and toes honey yellow ; claws yellowish 

 brown ; inside of mouth, including the tongue, orange. 



Measurements. — Males (19 from Costa Rica and Panama), wing 

 82.4-86.7 (84.2), tail 65.2-69.7 (67.3), culmen from base 24.3-28.0 

 (25.6), tarsus 16.3-17.8 (16.9) mm. 



Females (17 from Costa Rica and Panama), wing 75.0-78.8 

 (77.3), tail 58.0-66.4 (61.9), culmen from base 22.6-26.2 (24.2), 

 tarsus 15.4-16.7 (16.0) mm. 



Resident. Found locally, singly or in pairs, in Tropical Zone 

 forests and thickets, both original and second-growth. 



The Royal Flycatcher is widely distributed on both Pacific and 

 Caribbean slopes throughout the lowlands and foothills, frecjuently 

 near small streams. In Chiriqui, Arce sent specimens to Salvin from 

 the base of the volcano, and Mina de Chorcha. W. W. Brown, Jr., 

 in July 1901, collected three at Bugaba, and Mrs. Davidson took a 

 female near San Felix in the eastern area of the province. In 

 Veraguas, Arce collected it near Santa Fe, and Benson at Chitra. 

 Eisenmann reports seeing it at El Valle in Code. The only record 

 from the Azuero Peninsula is a male that I collected, and another 

 that I saw, on March 17, 1957, on the Quebrada Escota, near Pedasi, 

 Los Santos. W. W. Brown, Jr., secured four near Panama City in 

 May 1904. Elsewhere in the southern Canal Zone it has been re- 

 corded at Curundu, Albrook Field and Paraiso. From here eastward 

 to Colombia there are numerous records, including Cana, on Cerro 

 Pirre, and the base of Cerro Tacarcuna. On the Caribbean side, in 

 Bocas del Toro, I collected a female in Water Valley south of 

 Almirante, January 20, 1958. It is known in northern Veraguas from 

 Calovevora, and in northern Code I found it at El Uracillo on the 

 upper Rio Indio in February and March 1952. There are numerous 

 records for the northern Canal Zone, and it has been found in eastern 

 Colon. In western San Bias, in January and February 1957, it was 

 fairly common in the borders of swampy woodland near Mandinga, 

 and Wedel collected it at Ranchon and Puerto Obaldia near the 

 boundary with Colombia. 



Royal Flycatchers range ordinarily in heavily shaded undergrowth, 

 where they rest quietly with body erect in the usual flycatcher pose, 



