46 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
fled from the attacks of the more aggressive goldentail, even though 
that species is smaller. The series of four males and three females 
from Coiba does not differ from birds taken on the mainland. 
HYLOCHARIS ELICIAE (Bourcier and Mulsant): Blue-throated Goldentail, 
Colibri Cola de Oro 
Trochilus Eliciae Bourcter and Mutsant, Ann. Sci. Phys. Nat. Agr. Ind. Soc. 
Roy. Lyon, vol. 9, 1846, p. 314. (Type locality unknown.) 
This was a common hummingbird, found in small numbers in the 
lower level of branches in the high forest, and more abundantly in 
the mangroves and the swampy woodlands bordering the river 
mouths. Possibly flowering trees were the attraction that drew them 
to the latter habitat, as toward the end of my stay on Coiba I found 
them about blossoming guayabo trees that grew scattered through 
open pasturelands. They seemed more aggressive than other species 
of the family here, and especially toward other hummers. The light- 
colored base of the bill, which is pale reddish in life, shows clearly 
as they move about, even in the dim light of heavy forest. They 
seemed to seek shaded haunts, except when lured into the open by 
especially attractive flowers. The series collected includes one bird 
from Isla Rancheria. A female taken January 24 was laying. 
When compared with mainland series the Coiba birds appear to 
average very faintly darker, but there is no clear-cut distinction 
between specimens from the two areas. 
Carriker 1? suggests that the type locality of this bird, which was 
not indicated in the original description, may be Guatemala since 
the authors of this species describe another hummer from that 
country in the same paper. 
AMAZILIA EDWARD NIVEOVENTER (Gould): Snowy-breasted 
Hummingbird, Colibri Pechiblanco 
Trochilus niveoventer Goutp, Proc. Zool. Soc. London, pt. 18, 1850 (Feb. 28, 
1851), p. 164. (Near David, Chiriqui, Panama.) 
This handsomely marked hummingbird was one of the least com- 
mon kinds of the family. I found it mainly at the borders of the 
swampy woodlands near the river mouths, where one came occasion- 
ally, with other species, to the flowers of white mangroves, or was 
found alone. The bushy growths of old fields, as at San Juan, were 
also attractive, and when the guayabo trees in the pastures came into 
12 Proc. Acad. Nat. Sci. Philadelphia, vol. 87, Dec. 27, 1935, pp. 422-423. 
