501 
Birds of Southern Cameroon. 
except one, which was shot at a place further down the Ja. 
These shew all gradations from (1) a perfectly black first 
plumage (Nos. 3898 and 3904); through (2) a moulting 
transitional state, in which some of the chestnut feathers of 
the throat and chest and some of the barred feathers of the 
under parts are appearing among the black ones (Nos. 3044 
and 3141) ; and (3) a nearly adult plumage with some dark 
, Text-fig. 13. 
Ends of the middle pair of rectrices of Cucidus gabonemis. 
bars on the throat (Nos. 4411,4091, and 3616); to (4) the fully 
adult plumage (No. 4291). The specimen that Sharpe called 
Cuculus clamosus (‘ Ibis/ 1 c. supra ) is just like No. 3141. 
None of these birds have white-edged feathers. The feet 
are whitish, becoming yellowish only in older examples. 
The first two mentioned above, in which the plumage is not 
grown, have the upper surface of the tail perfectly black 
ser. ix.— vol. v. 2 m 
