BIRDS OF NORTH AND MIDDLE AMERICA. 781 



TROGONURUS CURUCUI TENELLUS (Cabanis). 



GRACEFUL TROGON. 



Adult male. — Pileiim, hindneck, back, scapulars, lesser wing- 

 coverts, rump, upper tail-coverts, and chest bright metallic green, 

 the back, etc., usually slightly more golden green, the upper tail- 

 coverts usually slightly more bluish green; loral, orbital, auricular, and 

 malar regions, chin, and throat black; middle pair of rectrices metallic 

 bluish green or greenish blue, broadly and abruptly tipped with 

 black, the two adjoining pairs with outer webs similar, but inner 

 webs blackish; three lateral pairs of rectrices black broadly tipped 

 with white, the subterminal portion of inner web and greater part 

 of outer web broadly barred with white; middle and greater wing- 

 coverts and outer webs of secondaries finely vermiculated with black 

 and white; primaries black, edged (except outermost and shorter 

 proximal quills) with white, this somewhat broken on terminal por- 

 tion; under parts posterior to chest pure orange-yellow (between 

 cadmium and chrome yellow), the anterior margin paler or some- 

 what intermixed with white, forming an indistinct band next to 

 green of chest; thighs sooty blackish; bill dull yellowish or yellowish 

 gray in dried skins, light apple green ^ or chromium green ^ in life; 

 naked eyelids glaucous" or blue;^ iris dark brown; feet gray'' or 

 plumbeous;^ length (skins), 213-254 (224); wing, 105-117.5 (110.4); 

 tail, 124-144 (134.1); culmen, 16-17.5 (16.5); tarsus, 12-14.5 (12.7); 

 inner anterior toe, 12-14,5 (12. 8).*= 



Adult female. — Pileum, auricular region, hindneck, back, scapulars, 

 lesser wing-coverts, rump, and upper tail-coverts plain brown (nearly 

 raw umber), the color slightly deeper (nearly mummy brown or 

 prouts brown) on pileum, paler and gi-ayer (nearly Isabella color) 

 on rump and upper tail-coverts, the longer of the latter sometimes 

 more rufescent; middle pair of rectrices deep cinnamon-rufous or 

 chestnut, rather narrowly tipped with black, this preceded by an 

 indistinct subterminal narrow band of cinnamon-bufTy ; next two 

 pairs with outer web similar but inner web blackish brown; three 

 lateral ])airs extensively wliite terminally and on greater part of 

 outer web, black basally, the white i)ortion (except an immaculate 

 terminal area) broadly barred with black; middle and greater wing- 

 coverts and secondaries much paler brown than back, etc., finely 

 vermiculated with dusky; a white orbital ring, interrupted on lower 

 eyelid, broadest behind eye, where margined posteriorly by a black 

 bar; suborbital region and posterior portion of lores grayish dusky; 



a Fresh colors of specimens shot by the writer in Costa Rica. 



6 Nutting. 



c Twenty-one specimens. 



