FAMILY FRINGILLIDAE 



605 



Females (10 from Panama), wing 70.2-76.5 (73.7), tail 63.8-72.7 

 (67.8), oilmen from base 16.8-18.2 (17.3), tarsus 26.1-27.2 (26.7) 

 mm. 



Resident. Common in the lowlands of both slopes, somewhat less so 

 in the foothills, and found in the highlands of western Chiriqui up to 

 1650 m (Blake, Fieldiana: Zool., vol. 36, no. 5, 1958, p. 574). In 

 Panama, the nesting season runs at least from mid-April, when Jewel 

 found nests in the Canal Zone (Stone, Proc. Acad. Nat. Sci. Phila- 

 delphia, vol. 70, 1918, pp. 276-277), to September 20, when Major 

 General G. Ralph Meyer found a nest, also in the Canal Zone. Skutch 

 (Pac. Coast Avif. no. 31, 1954, p. 105) found this species building as 

 early as January in Costa Rica, but not in significant numbers until 

 April. The nest is placed within a few feet of the ground in a dense 

 bush or clump of grass. It is a bulky, domed structure made of grasses, 

 decaying leaves, and roots with an entrance on the side; the extent of 

 the roof varies from nest to nest. The nest is built entirely by the fe- 

 male, although the male sometimes escorts her and may pick up and 

 drop bits of nesting material. Two eggs, or occasionally three, form a 

 clutch; they are pure white and slightly glossy. The average measure- 

 ments of 28 examined by Skutch were 25.2x18.4 mm. Incubation is 

 performed exclusively by the female and requires 13 to 14 days. The 

 young hatch blind, with pink skin and sparse gray down. They are fed 

 by both parents and leave the nest at 11 to 13 days of age. Skutch 

 found some young that were still being fed by their parents when 40 

 and 63 days old, but this only occurs when a second brood is not at- 

 tempted. 



ARREMONOPS CONIROSTRIS VIRIDICATUS Wetmore 



Arremonops conirostris viridicata Wetmore, 1957, Smiths. Misc. Coll., 134 (9), 

 p. 104. (Isla Coiba, off Veraguas, Panama.) 



Characters. — Similar to A. c. striaticeps but darker; gray on breast 

 and sides more extensive, with white on lower surface correspondingly 

 less extensive; black stripes of crown broader. 



Measurements. — Males (6 from Isla Coiba, including the type), 

 wing 75.5-80.3 (78.0), tail 64.6-69.3 (66.7), oilmen from base 16.7- 

 18.3 (17.6), tarsus 27.0-29.0 (27.8) mm. 



Females (6 from Isla Coiba), wing 69.9-74.6 (72.3), tail 60.0-64.9 

 (62.6), oilmen from base 16.2-17.9 (16.9), tarsus 26.2-28.5 (27.4) 

 mm. 



Resident. Common on Isla Coiba, oft the Pacific coast of Veraguas. 

 During my visit to Coiba in January and February of 1956, I found 



