618 
Mr. G. L. Bates on the 
because in a large series specimens with the plumage of 
E. schistaceus are all adult males, and those with the 
plumage of E. rufogularis females (I had sent others before), 
and because birds in all the different plumages have been 
shot in company with one another; but because further 
confirmation is found in two specimens in the Museum 
(Nos. 2057 and 2141) previously collected by me at Bitve. 
These were immature males, and the plumage is similar 
to that of the last three (Nos. 3301, 4021, & 3628) 
in the series given above, but a few new slate-coloured 
feathers are appearing on the throaty indicating the change 
to the plumage of E . schistaceus. 
It is to be noted that immature males change, becoming 
greyer above and whiter below, before the final change into 
adult plumage. 
This species seems to me to have a different aspect, on 
account of its extreme slenderness, from either of the 
species of Apalis which I know ; and its habits are different, 
for it is a bird of the forest, and feeds in companies or bijak } 
while Apalis hinotata and A. jacksoni have been seen in 
small trees of open country, seeking their insects singly. 
The separation into a separate genus, Euprinodes, therefore, 
seems to be a natural one. 
In text-fig. 20, p. 617, A represents the tongue of a young 
specimen that was not skinned, and B that of specimen 
No. 4198. 
Apalis binotata. (Plate XII. fig. 15, egg.) (Text- 
fig. 20, C, p. 617.) 
Sharpe, Ibis, 1808, p. 320 ; Bates, Ibis, 1909, p. 70. 
A good many more specimens have been shot, for at 
Bitye it is not a very rare bird. The black on the crop of 
the males is more extended than in the females ; in the latter 
there is only a black band running down the middle. The 
colour of the iris in all is brownish-yellow. Young birds 
(Nos. 3793-3889) have the heads above green like the back, 
and the feathers of the throat and chest slate-grey with 
white tips; the inside of the mouth and tongue orange, the 
latter with two small dark spots at the base near the edges. 
