804 MR. J. GOULD ON TWO SPECIES OF HUMMING-BIRDS. [Dec. 6, 
Buckley in having collected so many species during the very short 
time he had been in the country, and gave the following descriptions 
of the two new species :— 
CH#TOCERCUS BOMBUS, Sp. Noy. 
This species must be classed with the most diminutive of the 
Trochilide. In its general appearance and in its coloration it 
strongly reminds one of Chetocercus rose, while, in some parts of 
its structure, particularly in the form of its two hair-like outer tail- 
feathers, it resembles Acestrura mulsanti; its wing is even smaller 
and shorter than that of the little 4. heliodori. It must, however, 
be placed, as I believe it is correctly, in the genus Chetocercus. 
The following is a more minute description and admeasurement of 
this little bird. 
Male. Crown of the head, upper surface, and abdomen bronzy 
green ; throat brilliant crimson-red, nearly surrounded by a mark of 
buff, forming a conspicuous band across the chest, a feature distin- 
guishing it from Chetocercus rose, in which the band occupying 
the same space is white; wings purplish black; the tail-feathers 
the same, with the exception of the third or longest on each side, 
on which there is a very narrow edging of buff near the base of the 
inner margin; the two outer tail-feathers very fine and hair-like; 
the four central ones extremely small, so much so as to be hidden 
beneath the tail-coverts ; bill and legs black. 
‘ Total length 21 inches; bill 9, wing +, longest tail-feathers ?, 
arsi 3. 
Female. Larger than the male. Crown and upper surface green ; 
throat and under surface chestnut-brown ; tail, which is extremely 
short and even, deep chestnut-brown, banded with black across the 
centre of each feather. 
Total length 23 inches; bill 3, wing 13, tail 3, tarsi 3. 
Hab, Citado in Ecuador. 
THALURANIA HYPOCHLORA, Sp. nov. 
The nearest ally to this new species is Thalurania verticeps ; but 
from this it differs in having the entire under surface green instead 
of having a blue abdomen. 
Male. Frontal three-fourths of the crown of a beautiful green, 
which also pervades the entire under surface of the body ; all the 
upper surface deep grass-green, with a lovely patch of blue on the 
shoulder, extending for a short distance on to each side of the breast ; 
under tail-coverts blackish blue, edged with white; bill black ; feet 
brownish black. 
Total length 4 inches ; bill 2, wing 23, tail 13. 
Female. All the upper surface grass-green ; throat, abdomen, and 
under tail-coverts grey, darker and inclining to green on the flanks ; 
tail purplish black, slightly tipped with white, the white tipping 
being of lesser extent on the central than on the outer feathers. 
Size rather less than that of the male. 
Hab. Citado in Ecuador. 
