Trochilidse in the Paris Museum. 
139 
Chlorostilbon prasina. 
Ornismya prasina, Less. Ois.-Mouches, p. 188, pi. 65. 
Ornismya mellisuga, D'Orb. & Lafr. Syn. Av. ii. p. 30, sp. 20. 
Hab. Yungas, Sicasica, Ayupaya. 
A specimen of C. prasina , Less., brought by D’Orbigny 
from Ayupaya, as ascertained by the Museum Catalogue, 
I believe to be the 0 . mellisuga of the f Synopsis Avium/ 
for the following reasons :—The locality of Ayupaya is only 
given twice among D’Orbigny’s examples; and the present spe¬ 
cimen is the only Humming-bird brought by him that I have 
been able to find in the Museum as having come from that 
place, excepting the Metallura smaragdinicollis , about which 
there cannot be any difficulty. This would seem to point it 
out as the one intended by him as 0 . mellisuga. In the 
Museum Catalogue it is called the Saphir-emeraude, no Latin 
name having been employed. The next species of the f Syn¬ 
opsis ; he gives is 0 . bicolor ; and he asks if that is not the 
young of the Saphir-emeraude , Junior avis? le Saphir- 
emeraude” as though he had in his mind the present 
species, which he called in the Museum Catalogue by that 
name. These two circumstances seem to show that we 
shall not probably go wrong if we place D^Orbigny^s 0 . mel¬ 
lisuga as a synonym of Chlorostilbon prasina (Less.). Again 
M. Beauperthuy has placed in the gallery a specimen of C. 
prasina which bears on the ticket the name O. mellisuga. 
This seems to me also an indication that D^Orbigny^s name 
was intended for the same species. 
Two specimens of the bird called Ornismya bicolor by 
D'Orbigny are in the Museum, numbered 349 and 385. One 
of them, a male, is mounted, and has upon the stand Circe 
doubledayi in the handwriting of Bourcier; the other, a skin 
of a female in very poor condition, is marked on the label 
f Yungas/ in D’Orbigny^s writing. They are rather small 
delicately shaped birds, of a species apparently undescribed, 
belonging to the genus Thaumatias. Most certainly they 
have nothing to do with Circe doubledayi. I propose to call 
the species 
