736 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
b. Feathers cf orown and occiput elongated. 
Pharomachrus mocinno costaricensis, adult female (p. 739.) 4 
bb. Feathers of crown and occiput not elongated. 
c. Head brown.......... Pharomachrus antisiensis, adult female (extralimital.) 
cc. Head metallic green or bronze (at least on pileum). 
d. Abdomen red, like under tail-coverts, etc. 
e. Lateral rectrices extensively white terminally. 
Pharomachrus festatus, adulf female (extralimital.) 
ee. Lateral rectrices wholly black or else with only a small terminal area of 
white..............Pharomachrus auriceps, adult female (extralimital). 
dd, Abdomen (except extreme lower portion) brown, like breast. 
Pharomachrus pavoninus, adult female (extralimital). 
PHAROMACHRUS MOCINNO MOCINNO De la Llave. 
QUETZAL. > 
Adult male—Upper parts, head, neck, and chest brilliant metallic 
green or golden green (the head and long supracaudal plumes more 
golden), changing to bluish green or even greenish blue in certain 
lights, the elongated greater wing-coverts with basal portion (partly 
exposed) abruptly black; greater and primary wing-coverts, alula, 
and six middle rectrices uniform black; three lateral rectrices (on 
each side) white with black shaft, the basal portion (concealed) 
grayish black or slate color; under parts, posterior to chest, intense 
geranium red, darkening into crimson or burnt carmine on upper 
breast; tibial and tarsal feathers black, the lower ones glossed with 
metallic green; bill yellow; iris dark brawn: feet dusky (in dried 
skins); length (skins), to end of rectrices, 355-390 (371); wing, 
200.5-218 (206.6); tail, 197-217.5 (205.3); longest upper tail-coverts, 
650-957 (811); culmvan, 20-21.5 (21); tarsus, 18-21.5 (19.2); inner 
anterior toe, 19-21.5 (20.4).° 
Adult female.<—Pileum and sides of head metallic bronze-green 
(the color much less bright than in adult male), the loral and latero- 
frontal feathers much less developed; back, scapulars, wing-coverts, 
rump, and upper tail-coverts bright metallic golden green, as in 
a4] have not seen the female of P. m. mocinno, which, however, undoubtedly 
agrees with that of P. m. costaricensis in this character. 
b Not Quet/zal, as given in the dictionaries! The Central American native pro- 
nunciation is uniformly and distinctly ka-tz4l, or ka-zAl. 
c Fifteen specimens. 
@ The descriptions of the adult female and young stages are taken from specimens 
of P. m. costaricensis (which probably do not differ materially from the same plumages 
of P. m. mocinno), in order to preserve uniformity of treatment of composite species, 
there being no specimens of P. m. mocinno other than adult males in the series which 
I have been able to examine. The nestling described is the specimen recorded by 
Mr. Lawrence in his catalogue of Costa Rican birds as Nyctibius jamaicensis (no. 
51269, coll. U. S. Nat. Mus., “San Jose”=Volcan de Irazi?, Costa Rica, Jan. 15, 
1867; José C. Zeledén). 
