TEOGON. 501 



We now know that T. 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 Aganus lepidus. The large series of specimens before 

 us prove that no real distinctions exist. There I'emains the name Trogon condnnus of 

 Lawrence bestowed upon a Panama bird, which, on further examination, turns out to 

 be only a young male example of T. 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 '.Lehuan- 

 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, T. 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 4500 feet above sea-level. In Costa Eica, 

 Mr. Nutting says i^, it is not so common as T. 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-yellovt'. 



11. Trogon chrysomelas. 



Trogon chrysomelas, Richmond, Pr. U. S. Nat. Mus. xvi. p. 513 \ 



" Sjp. char. Exactly like T. atricolUs tenellus, except that the metallic green of the male is wholly replaced by 

 opaque black, without the slightest trace of metallic gloss. 



"Adult jnale (type, no. 127338, Escondido River, Nicaragua, Sept. 23, 1892: Ghas. 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 otitermost feather 2-35 shorter, culmen 0-75. 



" Adult female (type, no. 128377, Escondido Eiver, Nicaragua, Jan. 17, 1893 : Ghas. 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 O'l 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-yeUow ; 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 



