332 TROCHILIDE. 
d*, Rostrum fere rectum; cauda fere uniformis. 
a, Cauda rotundata ; gula nunquam micanti-rosaceo-rubra. 
a®, Pileus micans. 
OREOPYRA. 
Oreopyra, Gould, P. Z. S. 1860, p. 312; Salv. Cat. Birds Brit. Mus. xvi. p. 305. 
The four species included in this genus all belong to the highlands of Costa Rica and 
the western mountains of the State of Panama adjoining. - In these countries they nearly 
take the place of Delattria, most of the species of which are found further north. 
From Delattria, Oreopyra differs in having the sexes widely distinct in coloration, 
and in having the top of the head of the males glittering in contrast to, instead of in 
uniformity with, the back. The tail in both genera is nearly uniform, the females only 
exhibiting pale tips to the outer rectrices. 
1. Oreopyra leucaspis. 
Trochilus ( ?) castaneoventris, Gould, P. Z. S. 1850, p. 163°. 
Adelomyia? castaneiventris, Gould, Mon. Troch. iii. t. 203 (Sept. 1855) °. 
Oreopyra leucaspis, Gould, P. Z. S. 1860, p. 812°; Mon. Troch. iv. t. 264 (May 1861)*; Salv. 
P. Z. 8. 1867, p. 153°; 1870, p. 205°; Cat. Birds Brit. Mus. xvi. p. 306"; Lawr. Ann. Lyc. 
N.Y. ix. p. 125°. 
Oreopyra castaneiventris, Salv. P. Z. S. 1867, p. 153°; Ibis, 1869, p. 316”. 
Supra saturate gramineo-viridis, nitens, dorso medio cupreo tincto, capite summo micanti-ceruleo-viridi ; loris 
et tectricibus auricularibus nigricanti-viridibus, stria postoculari elongata et gula niveis, hujus lateribus et 
pectore nitide viridibus, abdomine medio cinereo, lateribus et tectricibus subcaudalibus viridi lavatis his 
quoque albo limbatis ; cauda chalybeo-nigra: rostro nigro. Long. tota circa 4:0, ale 2°5, caude 1:4, rostri 
a rictu 0°95, 
© supra viridis, nitens; capite summo nitentiore: subtus cinnamomea; cauda viridi, tectricibus externis griseo- 
albo terminatis et fascia subterminali nigra notatis. (Descr. maris et femine ex Chiriqui, Panama. 
Mus. nostr.) 
Hab. Panama, Cordillera de Chiriqui (Warszewiez 1°), Volcan de Chiriqui (Arcé ®). 
Warszewiez was the discoverer of this species during his visit to the Cordillera of 
Chiriqui, where he obtained five specimens—a male and four females. The latter were 
described by Gould in 1850 as Trochilus (?) castaneoventris1, and subsequently figured 
in his ‘Monograph of the Trochilide’ as Adelomyia? castaneiventris?._ The male was 
not characterized until 1860, when Gould placed it in a separate genus as Oreopyra 
leucaspis*. ‘The real relationship between these birds was not suspected until we 
received a large series of skins from our collector Arcé, and the point was discussed 
by Salvin in 1870°. In point of priority A. castaneiventris is several years older than 
O. leucaspis; but as the former name was founded on female specimens, and as all the 
birds of this sex are exceedingly alike in the species of Oreopyra, the latter name based 
upon the male had better be used. 
