626 Mr. G. L. Bates on the 
Cossypha cyanocampta. [Angokon.] (Plate XII. 
figs. 6 & 7, eggs.) 
Sharpe, Ibis, 1905, p. 474; 1908, p. 125. 
I can speak more certainly now than I could in my former 
note (‘Ibis/ 1905, p. 474) about the strange and sweet notes of 
the Amgokon; for after looking for it many times when I heard 
it in the thickets of the bikotok, I at last saw it. This bird 
is a very perfect imitator of other birds ; often one seems to 
hear a Cuckoo, for instance, but presently the voice changes, 
and you know that it is an Angokon. Late one evening 
when it was growing dark, and all sounds save those of night 
creatures had long ceased, I heard several short snatches of 
song by an Angokon, from a thicket near by ; is this bird 
acquiring the habit of its relative, the bird that “ sings 
darkling ” ? It is interesting to note, too, that its eggs 
look like those of the Nightingle. 
Four nests of this species, identified by the sitting birds 
caught in them, have been found by boys in the dark 
thickets which are the haunt of the bird. They were loosely 
built of decaying leaves and stems, with a few fibres 
inside. The number of eggs in each was two, but in every 
case one was broken; the eggs varied from 22 to 23’5 mm. 
in length, and from 15 to 16*5 mm. in width. 
[They are of a long oval form and distinctly glossy, the 
ground-colour varies from rather bright greenish-blue to 
pale bluish-green, and is more or less obscured by dull 
indistinct mottlings and cloudings of rufous or lilac-grey, 
which are concentrated towards the larger end.—W. B. 
O.-G.] 
Cossypha verticalis. [Angokon.] 
Beich. Y. A. iii. p. 761. 
Cossypha melanonota Sharpe, Ibis, 1908, p. 124. 
My specimens have certainly, on the whole, darker backs 
than specimens of C. verticalis from the Gold Coast ; but, 
as Dr. Sharpe pointed out, both these and the Gold-Coast 
birds vary in that respect, and are not clearly separable. 
This Angokon is rarer than the other, and I do not know 
whether it sings or not. 
