284 TROCHILID A. 
Supra nitenti-ceruleo-viridis, tectricibus caude superioribus cerulescentioribus; nucha nigra; pileo nitide 
cyaneo: subtus nitide aurea, hypochondriis viridescentioribus, gutture medio nitide rubro; plaga pectorali 
cyanea, tectricibus subcaudalibus saturate: viridibus; cauda saturate cyaneo-chalybea: rostro nigro, 
mandibule dimidio basali carnea. Long. tota 4:2, ale 2°5, caudew 1°5, rostri a rictu 0°9, (Descr. maris 
ex Volcan de Chiriqui. Mus. nostr.) 
2 mari similis. 
Hab. Costa Rica, San José (Hoffmann ! *), La Candelaria (v. Frantzius®®), Volcan de 
Cartago (EL. Arcé®, J. Cooper ®, Boucard"), Faldas de Irazu §, La Palma (Zeledon) ; 
Panama, Volcan de Chiriqui (Arcé ®). 
This beautiful species was discovered by the late Dr. Hoffmann in Costa Rica, and 
was described by Cabanis and Heine in 1860 from the single specimen sent by him to 
the Berlin Museum?, This specimen also formed the subject of Gould’s plate2. A few 
years afterwards our collector, Enrique Arcé, procured a series of specimens from Costa 
Rica, and subsequently others from the Volcan de Chiriqui, the sexes of each specimen 
from the latter locality being noted on the label. We thus learn that there is no 
tangible difference between the sexes of this species, the female being hardly less 
brilliant than the male. At one time it was supposed that the bird described by Gould 
as Anthocephala castaneiventris (a female Oreopyra) was the female of Panterpe insignis®, 
but this view has, we believe, been now definitely abandoned. 
The range of P. insignis seems to be very limited, and probably does not extend 
beyond the upland zone of forest which occupies the higher volcanoes of Costa Rica 
and Chiriqui. Zeledon gives its Costa Rica habitat as the slopes of the Volcan de 
Irazu, which is another name for that of Cartago. The same collector has sent a 
specimen to the United States National Museum from La Palma. 
b. Culmen ad basin plumatum ; tegule nasales (pars distalis) distincte exposite ; 
rostrum leviter arcuatum. 
al. Guttur album aut nitide viride aut ceruleo-viride. 
a’. Cauda uniformis, subquadrata ; pileus viridis, dorso concolor. 
al”. Sexus fere similes. 
AGYRTRIA. 
Thaumantias, Bp. Rev. Zool. 1854, p. 255 (nec Eschsch.). 
Agyriria, Reich. Aufz. d. Col. p. 10; Salv. Cat. Birds Brit. Mus. xvi. p. 178. 
Of the twenty-two species included in this genus only two occur within our limits, 
one of them being the widely-ranging A. candida, which extends from Eastern Mexico 
to Nicaragua, the other being A. duciw, the only known specimen of which came from 
Honduras. It is somewhat remarkable that in Costa Rica and the State of Panama 
