322 BIRDS OF THE REPUBLIC OF PANAMA PART 2 



in contrast with the darker feathers on either side, present a curious 

 development, difficult to explain, as the structure is found in both 

 sexes, though largest in adult males, and appears in first plumage 

 in immature birds. At casual glance with birds in the hand the white 

 feathers often suggest a bit of adherent dried excrement. 



The species was named for Edward Alphonso Goldman of the 

 Bureau of Biological Survey, naturalist on the Smithsonian Biological 

 Survey of the Panama Canal Zone. 



GOETHALSIA BELLA Nelson: Pirre Hummingbird, Colibri Pirreno 



Goethalsia bella Nelson, Smithsonian Misc. Coll., vol. 60, no. 3, September 24 

 (September 27), 1912, p. 7. (Cana, Cerro Pirre, Darien, Panama.) 



Small; tail, except central pair of feathers, cinnamon-buff tipped 

 with greenish black. 



Description. — Length 84-95 mm. Three or more of the central 

 under tail coverts elongated, broadened, with thickened, curved 

 shaft; inner secondaries cinnamon on basal half (as in Eupherusa). 

 Male, lores and forehead chestnut, inner feathers in the latter area 

 tipped with green ; rest of upper surface, including wing coverts 

 and upper tail coverts, metallic green, with a bronzy cast on the 

 lower back and rump ; two central rectrices bronze-green basally, 

 others basally cinnamon-buff, all tipped with dull black, this reduced 

 in amount on outer pair; inner secondaries cinnamon, tipped with 

 fuscous-brown ; wings fuscous-brown with a purplish sheen ; edge of 

 wing chocolate ; chin cinnamon-buff ; f oreneck to abdomen, including 

 sides and under wing coverts, shining, faintly bluish green ; flank 

 feathers basally pale cinnamon-buff to white, in part tipped with 

 green ; all of the under tail coverts pure white. 



Female, dorsally like male, except that the forehead is green like 

 the rest of the crown ; lores chestnut ; under surface light cinnamon- 

 buff, shading to whitish on upper foreneck and upper breast. 



In dried skins the maxilla and tip of mandible are dull black ; base 

 of mandible pale dull brownish white. 



Measurements. — Males (4 specimens) wing 52.0-54.2 (53.0), tail 

 29.0-33.1 (30.4), oilmen from base 17.4-18.2 (17.8) mm. 



Female (1 specimen), wing 52.7, tail 27.3, culmen from base 

 18.3 mm. 



Resident. Known in the Subtropical Zone on Cerro Sapo, and 

 Cerro Pirre, Darien ; south on the ridge of Pirre to the high valley 

 on the eastern slope of the Alturas de Nique (head of Rio Salaqui), 

 Choco, Colombia. 



