736 BULLETIN 50, UNITED STATES NATIONAL MUSEUM, 



b. Feathers cf orown and occiput elongated. 



Pharomaclmis mocinno costaricensis, adult female (p. 739.)^ 

 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. 



Pharoraachrus festatus, adult 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. 



qtjetzAl. b 



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 \vith 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 brown; 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); culmen, 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 andlatero- 

 frontal feathers much less developed; back, scapulars, wing-coverts, 

 rump, and upper tail-coverts bright metallic golden green, as in 



o I have not seen the female of P. m. mocinno, which, however, undoubtedly 

 agrees with that of P. m. costaricensis in this character. 



b Not Quetzal, as given in the dictionaries! The Central American native pro- 

 nunciation is uniformly and distinctly ka-tzal, or ka-zdl. 



c Fifteen specimens. 



d 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 Irazu?, Costa Rica, Jan. 15, 

 1867; Jose C. Zeled6n). 



