FAMILY VIREONIDAE 



20 1 



fledglings about 5 days old, with pin feathers just beginning to sprout; 

 evidently the young were born without down. They were fed entirely 

 on insects, primarily soft caterpillars, and in the following week de- 

 veloped rapidly, assuming the same plumage as their parents. Blake 

 (Fieldiana: Zool., vol. 36, no. 5, 1958, p. 555) reported an immature 

 bird with "the appearance of a recent nestling" collected by Monniche 

 on the Volcan de Chiriqui on May 16. 



CYCLARHIS GUJANENSIS PERRYGOI Wetmore 



CyclarhL gujanensis pcrrygoi Wetmore, 1950, Proc. Biol Soc. Washington, 63, 

 p. 61. (Cienaga Macana, near El Rincon, Herrera, Panama.) 



Characters. — Lores light neutral gray; chin, extreme upper throat, 

 and center of abdomen white; undertail coverts citron yellow; rest of 

 undersurface strontian yellow, becoming lemon yellow on the lower 

 breast and flanks. 



A male collected at Las Palmitas, Los Santos, on January 22, 1962, 

 had the iris light orange; maxilla mouse brown; mandible neutral gray; 

 tarsus, toes, and claws very light dull brown. 



Measurements. — Males (10 from Herrera and Los Santos), wing 

 70.5-75.8 (72.4), tail 51.8-56.7 (54.2), oilmen from base 16.6-18.9 

 (17.5, average of 9), tarsus 20.2-23.3 (22.0) mm. 



Females (6 from Herrera and Los Santos), wing 65.8-76.2 (70.2), 

 tail 51.6-56.6 (54.2), culmen from base 16.7-18.2 (17.1), tarsus 21.0- 

 23.4 (21.9) mm. 



Resident. In light and scrubby woodlands in lowlands on the Pa- 

 cific slope of western Panama from central and southern Code (Peno- 

 nome, Aguadulce) south through Herrera (El Rincon, Parita), and 

 west in the drainage of the Rio Santa Maria into extreme east central 

 Veraguas (El Villano, 24 km southeast of Santiago). Sight records 

 assumed to be this race come from Santa Maria, Quebrada Tejel, and 

 Quebrada Chitrabe to the south and west of Pese, and El Barrero, 

 Herrera. 



In the lowland, dry area of the eastern side of the Azuero Peninsula 

 these birds are local in distribution, though not uncommon within the 

 range outlined above. It is probable that they extend through tracts of 

 scattered forest in hilly areas south through Los Santos, though there 

 are no specimen records at present to substantiate this. On July 24, 

 1964, Eisenmann and N. G. Smith saw 2 in Los Santos on a wooded 

 stream border between Llano de Piedra and Tonosi; Smith saw 1 

 carrying food. The brilliant coloration of this form is strikingly dif- 



