. TROGON. — 501 
We now know that 7. caligatus throughout its range has a black head, its allies on the 
southern continent having the head distinctly washed with blue. The Mexican bird 
received the name of Aganus braccatus from Cabanis and Heine, who also described 
the bird of Western Ecuador as Ayanus lepidus. . The large series of specimens before 
us prove that no real distinctions exist. There remains the name Trogon concinnus of 
Lawrence bestowed upon a Panama bird, which, on further examination, turns out to 
be only a young male example of 7. caligatus. | 
The range of this Trogon extends from Tampico throughout the hotter parts of 
Vera Cruz. It then divides, and crossing to the west side at the Isthmus of 'I'ehuan- 
tepec passes along the Costa Grande of Guatemala through the whole west-coast 
region of Central America to Panama, and beyond to the end of the western forest- 
region of Ecuador. The eastern portion covers the whole of Yucatan and probably 
British Honduras, Eastern Guatemala, and the Republic of Honduras, and meets the 
western section in Nicaragua. 
In Guatemala, 7. caligatus as a rule keeps to the forests of the lowlands, but is not 
uncommon in the oak-woods of the Volcan de Fuego, near the village of Alotenango, 
and reaches an elevation of at least 4800 feet above sea-level. In Costa Rica, 
Mr. Nutting says 1%, it is not so common as 7. melanocephalus at La Palma, though 
frequently seen in the neighbourhood. It is the only Trogon he ever heard that gives 
utterance to a clear distinct whistle. 
The bare skin round the eye of this bird in life is lemon-yellow. 
11. Trogon chrysomelas. 
Trogon chrysomelas, Richmond, Pr. U. 8. Nat. Mus. xvi. p. 5131. 
“Sp. char. Exactly like 7. atricollis tenellus, except that the metallic green of the male is wholly replaced by 
opaque black, without the slightest trace of metallic gloss. 
‘Adult male (type, no. 127338, Escondido River, Nicaragua, Sept. 23, 1892: Ohas. W. Richmond). Entire 
head, neck, and chest uniform ‘dead’ black; back, scapulars, and rump dull, dusky greyish-brown, tinged 
or mixed with blackish; upper tail-coverts and middle tail-feathers brownish black, the latter abruptly 
tipped with deep black (about 0-4 in. wide). Wing-coverts and outer surface of closed secondaries very 
finely vermiculated with black and white; rest of the wing black, the primaries edged with white, this 
occupying the whole outer web at the base. Three outer tail-feathers mostly white (the outermost wholly 
white for the exposed portion), broadly tipped (for about 0°45 in. on the first to 0-7 in. on the third 
feather) with white, the remaining portion sharply and regularly barred on both webs with black, the 
black bars averaging very nearly as wide as the white interspaces. Underparts, posterior to the chest, 
wholly rich cadmium-yellow, becoming a little paler next the black of the chest. Bill greenish horn- 
colour, with tomia and culmen yellowish; feet horn-colour. Length (skin) 9°25 in., wing 4°3, tail 5-4, 
the outermost feather 2°35 shorter, culmen 0°75. 
“ Adult female (type, no. 128377, Escondido River, Nicaragua, Jan. 17, 1893: Chas. W. Richmond). Upper 
parts, including upper tail-coverts, sides of neck, malar region and auriculars, slate-black, almost pure 
black on the pileum; middle pair of tail-feathers slate-black with a terminal bar of 0-2 in. Wings black, 
primaries, second to sixth, with outer webs edged with white; secondaries and wing-coverts narrowly 
barred with white, bars 0-1 in. apart. A white spot before and one behind the eye; throat and breast 
between mouse- and smoke-grey, a narrow band of white posteriorly and bordering the yellow of the lower 
breast. Lower breast, abdomen, and under tail-coverts deep cadmium-yellow; sides olive-grey ; feathers 
of tarsus black , whitish at the base. Second pair of rectrices black, somewhat lighter on the outer web; 
- third pair black ; three outer pairs tipped with white, broad on the outer web, but narrowing down to a 
