TROOON. 275 



FAMILY TROGONID^E. THE TROGONS. (Page 271.) 



Genera. 



a 1 . Middle wing-coverts and upper tail-coverts normally developed, blended ; head 



not crested nor "horned" Trogon. (Page 275.) 



a 2 . Middle wing-coverts and upper tail-coverts unusually developed, more or less 

 lanceolate or falcate, with very distinct outlines ; head crested or " horned." 



b 1 . Head with a bushy or compressed crest Pharomachrus. 1 



b*. Head with slender ear-tufts Euptilotis? 



GENUS TROGON LINNAEUS. (Page 275, pi. LXXXL, fig. 1.) 



Species. 



COMMON CHARACTERS. Adult males: Back, scapulars, rump, and middle tail- 

 feathers metallic green, sometimes varied with blue or coppery, the middle tail- 

 feathers tipped with opaque black ; wing-coverts grayish, in some species finely 

 undulated with white ; breast, belly, and under tail-coverts fine red or yellow, bor- 

 dered anteriorly by a white band across breast. Adult females similar to males, but 

 metallic hues of back, etc., replaced by plain grayish or brownish. 



a 1 . Under parts red ; females and young brown above. 



b 1 . Inner webs of outer tail-feathers chiefly white, more or less barred with 



dusky or black, in both sexes. 



c 1 . Adult male : Crown, occiput, hind-neck, back, scapulars, rump, and upper 

 tail-coverts rich metallic bronzy green, varying to golden or coppery 

 bronze (the rump and upper tail-coverts always more green than 

 the back sometimes pure green) ; middle tail-feathers deep metallic 

 bronze, varying to rich copper-color, broadly tipped with black ; 

 wings (except primaries) delicately undulated with white and black, 

 the two colors in nearly equal amount ; quills dusky, with outer 

 webs chiefly grayish white ; forehead, lores, sides of head, chin, and 

 throat, dull opaque black ; chest metallic greenish or coppery bronze, 

 like back; a pure white band across breast; behind this, all the 

 lower parts pure scarlet-vermilion ; exposed portion of outer tail- 

 feathers white, with a broad terminal space immaculate, but rest, 

 on both webs, irregularly and narrowly barred, or marked with 

 zigzag lines, of blackish. Adult female : Metallic colors of male 

 replaced by light grayish brown, becoming more rufescent (some- 

 times cinnamon-rufous) on middle tail-feathers ; forehead, sides 

 of head, and throat, dull grayish ; outer tail-feathers much more 



1 Pharomachrus DB LA LLAVE, Registro Trimestre, i. num. 1, 1832, 48. Type, P. mocinno DE LA LLAVE. 

 One Mexican species (P. mocinno), the magnificent Quetzal, or royal bird of the Aztecs. 



2 Euptilotit GOULD, Mon. Trog. pt. i. 1858, pi. vi. Type, Trogon neoxenus GOULD. 



