95 
Letters , Announcements, fyc. 
Camaroptera olivacea, Sund.; but I am indebted to my friend 
the Rev. Canon Tristram for calling my attention to the fact 
that the Damara bird appears to be referable to the more 
northern species, Camaroptera brevicaudata (Rupp.), and I 
therefore avail myself of the pages of f The Ibis 3 to correct 
this error. 
It seems clear to me that C. olivacea and C. brevicaudata 
are really distinct species, although this has been doubted by 
some eminent ornithologists, and equally clear that the Da¬ 
mara bird is properly referable to C. brevicaudata. 
Mr. Tristram possesses two specimens, a male and female, 
both obtained by Mr. Andersson at Objimbinque, Damaraland, 
on the respective dates of 7th July and 29th June, 1866. 
These specimens are almost identical with each other, but 
they differ in the following details from a female specimen of 
C. olivacea obtained by Mr. Ayres in Natal:— 
In the Damara birds the whole of the upper surface of the 
wings is of a golden green, except the quill-feathers, which 
are only edged with that colour on their anterior margins. 
The upper surface of the head and the whole of the back 
and tail are dark grey. 
The sides of the head are grey tinged with fawn-colour in 
the male; the same tint of fawn pervades the throat, flanks, 
and tibial feathers in both sexes. 
The chin and central parts of the abdomen are white; and 
the under wing-coverts are tinged with bright saffron-yellow. 
The specimen of Camaroptera olivacea from Natal differs 
from the above in the following particulars :— 
There is no grey on any of the upper parts except the fore¬ 
head; the whole remainder of the upper surface, including 
the wings and tail, is of a dark olive-green, with a tinge of yel¬ 
low ; but this tinge is much less bright and marked than that 
on the wings of the preceding species, and the yellow on the 
under wing-coverts is much paler and fainter. 
There is no tinge of fawn on any part of the plumage of 
the Natal bird; and all those parts are dark grey which in the 
Damara bird are tinged with fawn. 
