42 
Mr. D. G. Elliot on the Trochilidse. 
Cayenne^ Guiana, and Brazil as far soutli as Bahia. Hr. Heine 
has described a bird, from the neighbourhood of Bogota, 
brought by M. Lindig, and called it Agyrtria terpna (/. c). 
I am not acquainted autoptically with it; but I cannot per¬ 
ceive any thing in the description to separate it from T. leuco- 
gaster : and I have placed its name among the synonyms of the 
present species with a mark of doubt; for of course I do 
not pretend to form any definite opinion until I have had 
an opportunity of examining the type. The measurements 
given are the same as those of T. leucogaster ; and the two 
birds seem to have the same black tail, which is one of the 
chief specific characters of T. leucogaster among the members 
of the group to which it belongs. If I am right in placing 
Hr. Heine^s bird with the present species, its range, must be 
extended over the whole northern part of South America 
from east to west. 
3. Thaumatias viridiceps. 
Thaumatias viridiceps, Gould, P. Z. S. 1860, p. 307; id. 
Mon. Troch. v. pi. 295; id. Intr. Mon. Troch. 8vo ed. 
p. 152. 
Hab. Ecuador, Citado [Buckley). 
This is a very distinct species, and, although bearing a close 
resemblance to T. milleri, is easily distinguished from it by 
its much larger size and the long strong bill. It was de¬ 
scribed by Mr. Gould (/. c.) from specimens received from 
Quito. Its exact range in Ecuador has not been ascertained. 
'-V 4. Thaumatias milleri. 
Trochilus milleri, Bourc. P. Z. S. 1847, p. 43. 
Thaumatias milleri, Gould, Mon. Troch. v. pi. 296; id. 
Intr. Mon. Troch. 8vo ed. p. 152. 
Hab. Columbia. 
This species, a diminutive form of T. viridiceps, was described 
by Bourcier [1. c.) from a specimen in the collection of the late 
Mr. Loddiges. In the examples before me, belonging to my 
own collection, there is a great diflPerence in the colour of the 
tail, which in some is greenish grey, like that of T.viridiceps, 
in others is bronze-red. Four specimens have the tails, and 
