THALURANIA.—MICROCHERA. 267 
Costa Rica (Endres), Tucurriqui (Arcé", Zeledon °), Angostura (Carmiol '*), Naranjo 
de Cartago, Jimenez (Zeledon®); Panama, Volcan de Chiriqui (Warszewiez ®, 
Arcé), Boquete de Chitra , Chitra %, Castillo, Laguna, Santiago de Veraguas ", 
Calovevora ®, Santa Fé 14, Line of Railway (Arcé), Lion Hill (M‘Leannan | }), 
Paraiso (Hughes ").—Cotomsia! ? and VENEZUELA *. 
The original specimens of this species, as its name implies, came from Colombia! ; 
and we now know it as one of the very common species of that country, large numbers 
of specimens being sent from time to time in the trade collections made in the vicinity 
of Bogota. 
T. venusta was described by Gould from specimens sent him by Warszewiez® from 
Chiriqui, and it was stated to differ from Z. colombica by the greater extent of the 
violet-blue colouring on the shoulders and back, that colour occupying in adult birds 
the whole of the interscapular region. As arule, northern birds, 7. e. those found at 
- Panama and thence northwards to Nicaragua, have more blue in this portion of the 
plumage than southern ones, but it is certainly a variable character and at most only 
seen in older birds. As the bird is an inhabitant of the lowlands, and as it is very 
improbable that any line of demarkation divides the two forms, we think it best to 
keep them together under one specific name. 
T. colombica is not uncommon on the line of the Panama Railway, whence M‘Leannan 
sent us several specimens 1°. We have also received many others from various parts 
of the State of Panama, and also from Costa Rica. 
Belt’s collection, too, made at Chontales in Nicaragua, contained several specimens in 
very perfect plumage !°; and we have lately received others from the same country 
from Mr. W. B. Richardson. 
[Note.—Thalurania lucie, described by Mr. Lawrence from a specimen said to have 
been obtained by Xantus on one of the Tres Marias Islands, now proves, according to 
Count Berlepsch, to be 7. glaucopis of Brazil, an error having been made as to its 
origin. | 
d*. Cauda plus minusve rotundata. 
a°. Rostrum fere rectum, rectrices laterales ad basin albe. 
a®. Pileus niveus, plume supra tegulas nasales extense. 
MICROCHERA. 
Microchera, Gould, Mon. Troch, ii. t. 116 (Sept. 1858) ; Salv. Cat. Birds Brit. Mus. xvi. p. 66. 
This genus was established by Gould in 1858 upon the wonderful little bird 
described by Mr. Lawrence some years previously as Mellisuga albocoronata. A second 
34* 
