Mr. D. G. Elliot on the Trochilidse. 
51 
Bogota. From this last locality Mr. Gould has received 
specimens presenting no differences from eastern examples^ 
save a trifling increase in the length of the bill and a slight 
tipping of white to the tail-feathers. T. tobaci can be recog¬ 
nized from its near ally^ T. tephrocephalus, by the colour 
of its tail, the lateral feathers of which are black, with 
pale tips. 
^ 14. ThAUMATIAS PLUVIATILIS. 
Thaumatias fluviatilis, Gould, Intr. Mon. Troch. 8vo ed. 
p. 154. 
Hah. Rio Napo, Pebas, Peru. 
This rather rare species was described by Mr. Gould as 
above from specimens obtained on the Rio Napo. It has 
also been procured at Pebas by Mr. Hauxwell. It differs 
from its near relatives in the deep grass-green, with a slight 
bluish tinge, of its under surface (deeper in eolour even than 
in T. nigricauda, although of a similar shade), also in the under 
tail-coverts, which are brown, margined with white. It is 
apparently not uncommon in the localities it frequents. 
15. Thaumatias apicalis. 
Thaumatias apicalis, Gould, Intr. Mon. Troch. 8vo ed. 
p. 154. 
Hah. Columbia. 
This appears to be a rare species. I have only seen the 
specimens contained in Mr. Gould'^s collection and my own. 
It has a very long bill, and the tail is similar to that of the 
bird I have called T. nigricauda; but the median feathers are 
bright green for two thirds their length, and then black. 
Mr. Gould states that the under tail-coverts are pure white. 
When together they appear so, but on separating them it is 
perceived that their centres are blackish brown, the remaining 
portions being white. 
16 . Thaumatias maculicauda. 
Thaumatias maculicauda, Gould, Intr. Mon. Troch. 8vo ed. 
p. 154. 
Hah. British Guiana. 
Mr. Gould has, with his usual kindness, placed in my hands, 
E 2 
