464 JilRDS OF THE REPUBLIC OF PANAMA PART 3 



slope in Chiriqui, mainly in the highlands, but ranging to Puerto 

 Armuelles, Bugaba, Cerro Flores, San Felix, and Las Lajas east to 

 \^eraguas, including the lower end of the Azuero Peninsula. Casual 

 eastward to Code, the Canal Zone, and Darien (Cerro Pirre) ; to 

 1980 meters on the slopes of Volcan Baru. On the Caribbean side 

 recorded on the Boquete trail, and at Guabo, Bocas del Toro ; 

 Calovevora, Veraguas ; and in the northern Canal Zone on Barro 

 Colorado Island, and at the former Lion Hill Station. 



Early reports of this species are few and uncertain. Sclater and 

 Salvin (Proc. Zool. Soc. London, 1864, p. 360) include it, with no 

 comment, in a list of birds that came to Salvin through his visit 

 to McLeannan at Lion Hill, Canal Zone, in March and April 1863. 

 At about this same time, Lawrence (Ann. Lye. Nat. Hist. New York, 

 vol. 7, 1863. p. 8) included it in his final account (part IV) of 

 McLeannan's collections. These two reports, and a sight record 

 October 17, 1944, on Barro Colorado Island by Arthur Allen, appear 

 to be the basis for recording the species from the Canal Zone. Gris- 

 com (Bull. Mus. Comp. Zool, vol. 69, 1929, p. 178) reported a 

 male taken by R. R. Benson at Cana on Cerro Pirre, Darien, which 

 is the only other vagrant record to date. The earliest record for fall 

 arrival is one taken by Benson at El Villano near Santiago. Veraguas. 

 September 8, 1924 ; the latest for spring, April 13 at Guabo, Bocas del 

 Toro, and April 14 at Cana. Darien. 



In 1966 I collected single individuals on six different days from 

 February 7 to March 12 near Puerto Armuelles, Chiriqui. In none 

 of these was there any indication of building fat for the migration 

 period ahead. Two were taken on the Rio Guanico, at Las Palmitas, 

 Los Santos, January 25 and 27, 1962, and four on Isla Cebaco, in 

 the lower Golfo de Montijo, Veraguas, January 16 to 20, 1965. One 

 was secured in eastern Chiriqui at Las Lajas, February 14. and two 

 near San Felix February 16 and 17, 1956. My most eastern record 

 was one taken on the Pacific slope near the head of Rio Mata 

 Ahogada, east of El Valle, Code, March 31, 1951. They were com- 

 mon in the highlands of Chiriqui from El Volcan westward to the 

 Costa Rican boundary near El Sereno, ranging down the slopes to 

 above Buena Vista at 700 meters elevation. 



These flycatchers ranged regularly in thickets and second growth 

 along the banks of streams, like the Chiriqui Viejo, in undergrowth 

 in open woodland over the mountain slopes, and especially in thickets 

 bordering meadows. They were invariably alone, moved rather 

 quickly to rest under cover of leaves, and there remained quiet until 



