510 BUCCONIDA. 
his station on the Panama Railway. This district we supposed at one time to be the 
extreme limit of its range in this direction; but we have a skin from our collector 
Arcé from a point westward of the railway, and in his most recent list Mr. Zeledon 
records its presence at Jimenez in Costa Rica ®. 
Fam. BUCCONIDA. 
Bucconide, Sclater, Mon. Jacamars and Puff-birds, pp. xxvii et seq. (1882) ; Cat. Birds Brit. Mus. 
xix. pp. 178-208. 
The Bucconide, like the Galbulide, is a family of purely Neotropical birds with 
nearly the same geographical range over Continental America, both being absent from 
the Antillean subregion. The Bucconide is divided into seven genera, four of which 
are represented in our region; these are: Bucco with five species, Malacoptila with 
two, Nonnula with one, and Monasa with two. Of the total number of forty-three 
species we find ten in Central America, only two of which, viz. Malacoptila inornata 
and Monasa grandior, are not found outside our limits, but both of them have very 
close external allies. . 
Compared with the Galbulide, the Bucconide have a much stouter bill, which is 
wider at the base, and the culmen evenly curved for the greater part of its length and 
depressed (in Bucco to a distinct hook) at the end; the rictal bristles are strong and 
curved, the nostrils are deeply sunk and overhung by strong, curved, bristle-like 
feathers. The wings are short and rounded, the tail usually short, but elongated in 
Monasa. The character of the plumage differs completely from that of the typical 
Galbulide, being destitute of any metallic tints, and the birds generally are of much 
stouter build. 
The structure of various members of the family was fully examined by Forbes, and 
his notes are given in the introduction to Sclater’s Monograph. 
A. Rostrum robustum, apice hamato. 
BUCCO. 
Bucco, Brisson, Orn. iv. p. 92 (1760) ; Scl. Mon. Jacamars and Puff-birds, p. xxxv; Cat. Birds 
Brit.. Mus. xix. p. 179. 
Tamatia, Lesson, Traité d’Orn. p. 166. 
Notharchus, Cab. & Heine, Mus. Hein. iv. Heft 1, p. 149. 
Mr. Sclater admits twenty species of Bucco, which he divides into two subgenera, 
Bucco and Nyctalus, on the shape of the bill, which is dilated at the base in the 
species arranged under the former name, the sides nearly straight and more compressed, 
in the latter the sides being slightly concave. These differences are more distinct in 
