BIRDS OF NORTH AND MIDDLE AMERICA. 785 
as long as middle toe, densely feathered for entire length; anterior 
toes united for basal and part of second phalanx. 
Coloration.—Adult males with head and neck black, chest metallic 
bluish green to violet-blue, back bright metallic green, upper tail- 
coverts and middle rectrices metallic bluish green or greenish blue 
(the latter broadly tipped with black), lateral rectrices barred with 
black and white (except a terminal area of immaculate white), wing- 
coverts and secondaries minutely vermiculated with black and white, 
and under parts posterior to chest rich orange-yellow; adult females 
with slate color replacing all the metallic colors, as well as the black 
of head and neck, the wing-coverts and secondaries narrowly barred 
with white, and inner web of lateral rectrices wholly blackish except 
the narrow white tip; young male similar to the adult male, but 
chest, back, and middle rectrices dark sooty brown or sooty slate; 
young female similar to the adult female, but the slate color darker 
and more sooty. 
Range.—Southern Mexico to Ecuadér, Amazon Valley, Guiana, 
and Trinidad. (Three or four species.%) 
KEY TO THE SPECIES AND SUBSPECIES OF CHRYSOTROGON. 
a. Back, scapulars, rump, upper tail-coverts and middle rectrices bright metallic . 
green and blue or greenish blue; no white orbital ring; wing-coverts and sec- 
ondaries minutely vermiculated or freckled with white or gray, or else uniform 
slate-black. (Adult males.) 
b. Lower part of tarsus naked; bill broader basally, the interramal space relatively 
larger and broader; pileum (except forehead) metallic blue or violet. 
c. Culmen rounded, or at least not distinctly ridged; wing-coverts distinctly 
(though minutely) freckled with pale gray. (Cayenne and Triniddd to 
Caribbean slope of Colombia.) 
Chrysotrogon violaceus, adult male (extralimital).d 
ec. Culmen distinctly ridged; wing-coverts not distinctly if at all freckled with 
gray. (Chrysotrogon ramonianus.) 
@ Although Trogon meridionalis Swainson and T. ramoniana Deville and Des Murs 
differ from the type of Chrysotrogon in having the extreme lower part of the tarsus bare, 
and the plumage of their young is unknown, the adults resemble C. caligatus so closely 
in coloration that I have little doubt they belong in the same genus. 
6 [Trogon] violaceus Gmelin, Syst. Nat., i, pt. 1, 1788, 404 (based on Lanius capite, 
etc., Koelreuter, Nov. Act. Petrop., ii, 436, pl. 16, fig. 8; Couroucou & chaperon violet 
Buffon, Hist. Nat. Ois., vi, 294; Violet-headed Curucui Latham, Synopsis Birds, i, 
pt. 2, 491).—T[rogon] violaceus Hellmayr, Abh. K. Bayer. Akad. Wiss. Miinchen, ii, 
K1., xxii, Bd. iii, 1906, 596 (crit.).—A[ganus] violaceus Cabanis and Heine, Mus. Hein., 
iv, Feb., 1863, 190 (Cayenne; Guiana; Trinid&d).—Trogon meridionalis Swainson, 
Anim. in Menag., pt. iii, Jan. 1, 1838, 332 (‘‘ Bahamas and other neighboring islands;” 
coll. W. Swainson); Gould, Mon. Trog., ed. 1, 1838, pl. 9 and text; ed. 2, 1875, pl. 17 
and text; Grant, Cat. Birds Brit. Mus., xvii, 1892, 467 .—Alganus] caligatus (not. Trogon 
caligatus Gould) Cabanis and Heine,. Mus. Hein., iv, Feb., 1863, 189 (Cartagena, 
Colombia). 
f 
81255°—Bull. 50—11—50 
