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 nock 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 wliite 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 adidt female, but the slate color darker 

 and more sooty. 



Range. — Southern Mexico to Ecuador, Amazon Valley, Guiana, 

 and Trinidad. (Tlu-ee or four species.") 



KEY TO THK SPECIES AND SUBSPECIES OF CHRYSOTUOOON. 



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 interramul space relatively 

 larger and broader; pileum (except forehead) metallic Idue or violet, 

 c. Culmen rounded, or at least not distinctly ridged; wing-coverts distinctly 

 (though minutely) freckled with pale gray. (Cayenne and Trinidad to 

 Caribbean slope of Colombia.) 



Chrysotrogon violaceus, adult male (extralimital).'> 

 cc. Culmen distinctly ridged; wing-coverts not distinctly if at all freckled with 

 gray. (Chrysotrogon ramonianus.) 



o 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. 



t> [Trogon] violaceus Gmelin, Syst. Nat., i, pt. 1, 1788, 404 (based on Lanius capite, 

 etc., Koelreuter, Nov. Act. Petrop., ii, 436, pi. 10, fig. 8; ("ouroucou a chaperon violet 

 Buffon, Hist. Nat. Ois., vi, 294; Violet-headed Curucui Latham, Synojvsis Birds, i, 

 pt. 2, 491). — T[rogon] violaceus Ilellmayr, Abh. K. Bayer. Akad. Wiss. Miinchen, ii, 

 Kl., xxii, Bd. iii, 1900, 596 (crit.). — A[ganu.s] violaceus Cabanis and Heine, Mus. Hein., 

 iv, Feb., 1863, 190 (Cayenne; Guiana; Trinidad). — Trogon meridionalis Swainson, 

 Anim. in Menag., pt. iii, Jan. 1, 181^8, 'MVI ("Bahamas and other neighboring islands;" 

 coll. W. Swainson); Gould, Mon. Trog., ed. 1, 1838, pi. 9 and text; ed. 2, 1875, pi. 17 

 and text; Grant, Cat. Birds Brit. Mus., xvii, 1892, 407. — A[ganus] caligatus (not Trogon 

 caligatus Goidd) Cabanis and Heine, Mus. Hein., iv, Feb., 1803, 189 (Cartagena, 

 Colombia). 



81255°— BuU. 50—11 50 



