48 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
from the Rio Colorado, October 20, and three males nearer the town 
on October 22 and 26. They were found in shaded places where the 
ground was open and water not far distant. Many sections of wood- 
land along the Rio Liberia were favorable to them, and I found them 
also along the steep-walled quebradas inland. At the Rio Colorado 
there was one place that was especially favored, a deep, wide que- 
brada with sandy floor where the trees met overhead and there were 
pools of water along the channel. While resting in this cool, pleasant 
place I was sure to hear the low humming made by the wings of this 
bird, but in the obscure light it was difficult sometimes to see them 
on the dead twigs on which they perched. The pinkish base of the 
bill was the most prominent marking in life. 
ANTHOSCENUS CONSTANTII CONSTANTII (Delattre) 
Ornismya Constantit DELATTRE, Echo du Monde Savant, ser. 2, vol. 7, No. 45, 
June 15, 1843, col. 1069 (Bolsén, Costa Rica). 
In small numbers these hummingbirds were found at the borders 
of heavy woodland or along brush-lined roadways near Liberia. I 
collected males on October 28 and 30. 
Griscom " reports that the type of constanti, now in the American 
Museum of Natural History, while marked ‘‘Guatemala”’ is typical in 
color of the bird found in Costa Rica. . As the bird of Guatemala is 
the paler race A. c. leocadiae, he proposes Bolsén, Costa Rica, as the 
type locality for constanti. , 
Family TROGONIDAE 
TROGON ELEGANS AUSTRALIS Griscom 
Trogon elegans australis Gxiscom, Proc. New England Zo6l. Club, vol. 12, Apr. 3, 
1930, p. 3 (Bagaces, Guanacaste, Costa Rica). 
The two trogons of this race taken were secured near Liberia on 
November 1 and 2. They were found in heavy woods and were 
especially common along the Rio Colorado. 
TROGON MELANOCEPHALUS ILLAETABILIS Bangs 
Trogon melanocephalus tllaetabilis Banas, Proc. Biol. Soc. Washington, vol. 22, 
Mar. 10, 1909, p. 30 (Bolsén, Costa Rica). 
The slaty-headed trogon, taken on October 27 and 29, was a com- 
mon species near Liberia, being found in groves scattered through 
pastures, as well as in heavy woodland. The loud call, beginning as 
a cooing note, and at the end becoming so rapid that it terminates in 
11 Bull. Amer. Mus. Nat. Hist., vol. 64, 1932, pp. 210-211. 
