BIRDS OF NORTH AND MIDDLE AMERICA. 743 



Bill very large and strong, as deep as broad at ]>ase, the culnien 

 strongly arched, not distmctly if at all ridged; gonys shorter than 

 mandibular rami, strongly ascending terminally; interramal space 

 as broad, distally, as long, broadly rounded anteriorly; tomia dis- 

 tinctly serrate for anterior half, the notches and tooth-like points 

 deeper on mandible than on maxilla, the tip of the mandible form- 

 ing a distinct ascending point. Nostril rounded, nonoperculate, 

 concealed by an antrorse tuft of bristly plumes. Feathers of chin 

 and malar apex bristly, antrorse, the former strongly recurved. 

 Feathering of head normal; seventh, eighth, or seventh and sixth 

 primaries longest, the tenth (outermost) less than half as long as the 

 longest; tail slightly shorter to decidedly longer than wing, gradu- 

 ated for one-fourth its length or slightly more, the lateral rectrices 

 not truncate at tip nor distinctly if at all tapering terminally, the 

 terminal outline of inner web strongly oblique, the middle rectrices 

 subtruncate. Tarsus decidedly shorter than longest toe, naked for 

 more than lower half; toes very strong, the two anterior ones united 

 for more than half their length. 



Coloration. — Adult males with head, neck, chest, and upper parts 

 metallic bronze-green to l)luish green (sometimes blue on rump, 

 upper tail-coverts and middle rectrices), the wing-coverts and sec- 

 ondaries finely vermiculated with black and grayish white, the 

 tlii'ee outermost rectrices (on each side) plain blackish or slaty (in one 

 species) with narrow white bars; under parts, posterior to chest, 

 bright red; adult females with upper parts slate-color, the anterior 

 under parts slate-gray. Young very different from adults (con- 

 spicuously spotted). 



Range. — Southern Mexico to Amazon Valley. (Four species.) 



KEY TO THE SPECIES AND SUBSPECIES OF CURUCUJUS. 



a. Upper parts (except wings) and chest metallic green (sometimes bhiish on rump 

 and upper tail-coverts); maxilla yellow or orange. (Adult males.) 

 b. Lateral rectrices uniform blackish slate (the outer web minutely freckled with 

 pale grayish basally). 

 c. No white on upper breast. (Southeastern Mexico to eastern Panamd.) 



Curucujus massena, adult male (p. 744). 

 cc. A white band across upper ]>reast (next to green of chest). {Curucujus 

 melanurus.) 

 d. Smaller (wing 147-1G5, averaging 155.3; tail 143-175, averaging IGO.l). 

 (Colombia to western Ecuador, Amazon Valley, and Cayenne.) 



Curucujus melanurus melanurus, adult male (extralimitiil).^ 



a Trogon melanurus Swainson, Anini. in Menag., pt. iii, Jan. 1, 1838, 329 (Demerara, 

 Brit. Guiana); Gould, Mou. Trog., ed. 1, 1838, text to pi. 18; ed. 2, 1875, pi. 29 and 

 text; Grant, Cat. Birds Brit. Mus., xvii, 1892, 472. — {Curucujus'] melanurus Bona- 

 parte, Consp. Voluc. Zygod., 1854, 14. — Tlroctes] melanurus Cabanis and Heine, 

 Mus. Hein., iv, 1863, 201. — Trogon nigricaudata Gould, Mon. Trog., ed. 1, pi. 18. — 

 T[roctes] mesurus Cabanis and Heine, Mus. Hein., iv, Feb., 1863, 202 (Babahoyo, 

 w. Ecuador; coll. Heine Mus.). 



