734 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
adult males of some species extends backward to or beyond middle 
of crown, the feathers of the latter, together with those of the occiput, 
in one species (P. mocinno) much elongated, semidecomposed, form- 
ing a bushy crest; middle wing-coverts enlarged, more or less nar- 
rowed terminally, in the males of some species much elongated, 
decurved, and subacuminate; sixth primary longest, the seventh a 
little shorter, the tenth less than half to slightly more than half as 
long as sixth; tail slightly shorter to slightly longer than wing, 
strongly graduated (sometimes for more than one-third its length), 
the rectrices firm, tapering terminally, the tip not truncated; upper 
tail-coverts enlarged and elongated, the longer ones reaching to much 
beyond middle of tail, in adult males of one species (P. mocinno) 
several times as long as tail, forming streamer-like, pendant plumes; 
tarsus decidedly shorter than longest toe (without claw), the upper 
portion feathered. 
Coloration.—Upper parts Gncluding wing-coverts), throat, and 
chest, brilliant metallic green (the head sometimes golden or bronzy); 
remiges and at least four middle rectrices black, the three outer 
pairs of the latter usually mostly white; under parts posterior to 
chest rich bright red “ (sometimes darker next to green of chest); 
adult females duller in color, with red of under parts more restricted 
anteriorly, the lower chest, at least, sometimes breast, sides, and 
abdomen, brownish or grayish. 
Range.—Highlands of Chiapas to mountains of Peru, Bolivia, and 
Venezuela. (Five or six species.) 
KEY TO THE SPECIES AND SUBSPECIES OF PHAROMACHRUS. 
a. Under parts metallic green anteriorly, red posteriorly (no brown or gray). (Adult 
males.) 
6. Loral and latero-frontal plumes greatly developed, antrorse and erect, forming a 
closely appressed bilateral crest, which anteriorly covers basal half or more 
of maxilla; lateral rectrices white. 
c. Crest grealy developed, involving whole of pileum; distal upper tail-coverts 
greatly elongated, several times longer than tail. (Pharomachrus mocinno.) 
d. Larger (wing averaging 206.6, tail 206.3) with supracaudal plumes much 
broader, averaging much longer (822.1 mm., sometimes more than 950 
mm.), and more golden in color. (Southern Mexico to Honduras.) 
Pharomachrus mocinno mocinno, adult male (p. 736). 
dd. Smaller (wing averaging 199, tail 187.4), with supracaudal plumes much 
narrower, averaging much shorter (660.5 mm., never more than 825 mm.), 
less golden in color. (Costa Rica and western Panam4; Nicaragua?) 
Pharomachrus mocinno costaricensis, adult male (p. 739). 
@ In one supposed species (possibly a color-variety of P. auriceps) the abdomen, 
etc., are orange-yellow. This is Pharomacrus xanthogaster Turati and Salvadori, 
Proc. Zool. Soc. Lond., 1874, 652 (Bogota, Colombia; coll. Count Turati); Oustalet, 
Nouv, Archiv. Mus. Paris, (3), vii, 1895, 229, pl. 8. 
