FAMILY PARULIDAE 



321 



Females (3 from Chitra, Veraguas), wing 54.0-56.5 (55.3), tail 

 51.5-52.2 (51.8), oilmen from base 11.4-11.7 (11.6), tarsus 20.6-22.5 

 21.5) mm. 



Resident. This race is known only from mountains about Chitra, 

 eastern Veraguas, where it was first collected by Rex R. Benson in 

 February 1926. He encountered it between 1200 and 1500 m, the latter 

 altitude representing the tops of the highest peaks in that area. 



Eisenmann observes that in the Veraguas highlands several species 

 develop forms with more black pigment in the plumage, while in Darien 

 the tendency is to reduced melanin and more carotenoid yellow. 



BASILEUTERUS MELANOGENYS IGNOTUS Nelson 



Basil euterus melanogenys ignotus Nelson, 1912, Smiths. Misc. Coll., 60(3), p. 21. 

 (Mount Pirri, 5,200 ft., near head of Rio Limon, Darien, Panama.) 



Characters. — Superciliary pale greenish yellow; undersurface with 

 strong yellowish suffusion, black on head reduced. 



Measurements. — Male (1 from Cerro Tacarcuna, Darien), wing 

 59.0, tail 57.0, culmen from base 12.8, tarsus 21.0 mm. 



Female (1 from Cerro Pirre, Darien, the type), wing 57.0, tail 55.4, 

 culmen from base 11.5, tarsus 20.5 mm. 



Resident. Known only from eastern Darien, where the type, an 

 adult female, was collected at Cerro Pirre (as 1560 m) near the head of 

 the Rio Limon, on April 18, 1912, by E. A. Goldman, and 3 males and 

 2 females were collected by C. Myers and R. Hinds at 1650 m on Cerro 

 Tacarcuna on February 9-12, 1975. Eisenmann, who examined all the 

 Tacarcuna specimens in comparison with the type, noted that they 

 showed much more black on sides of the head, forehead and throat 

 than the lone Pirre specimen and a narrower superciliary. The Tacar- 

 cuna birds thus seem nearer to the western Panama birds in this re- 

 spect than to the type of ignotus. 



BASILEUTERUS RUFIFRONS (Swainson): Rufous-capped Warbler, 

 Reinita Cabecicastana 



Setophaga rufifrons Swainson, 1838 (1837?), Anim. Menag., p. 294. (Real de 

 Arriba, Mexico, Mexico.) 



Small; crown reddish brown; nape gray; rest of upper surface 

 olive-green; undersurface yellow, greenish on sides. 



Description. — Length 111-121 mm. Adult (sexes alike), super- 

 ciliary white; lores, orbital ring, and line through eye black; crown 

 and auriculars reddish brown; nape gray; rest of upper surface, in- 

 cluding tail, olive-green; wings dusky with coverts tipped and remiges 



