collected in Southern Cameroon. 
8 7 
1921.] 
Ceriocleptes proposed by Mr. Chapin, but I consider that it 
must be kept up. 
If Reichenow’s genus Melichneutes (Orn. Monatsb. 1910, 
p. 160), founded on M. sommey'feldi, is, as I suspect, identical 
with Chapin’s genus Ceriocleptes, then Reichenow’s name 
will take precedence. 
Prodotiscus insignis. 
Hetcerodes insignis Cassin, Proc. Acad. Philad. 1856, p. 157 
—Type locality : Moon da River, Gaboon. 
? Prodotiscus emini Shelley, P. Z. S. 1888, p.43 [Bellima]. 
Two adult female examples procured by Mr. Bates at 
Bitye ; River Ja, should be typical examples of Hetcerodes 
insignis Cassin, described from the Moonda River, Gaboon. 
It seems more than probable that the type specimen of 
P. emini Shelley (which came from Bellima in the Tingasi 
District and not from Wadelai as stated in the original 
description, cf. P. Z. S, 1888, p. 43) is a male of the present 
species. In the British Museum collection there is a female 
example from Nairobi, presented by Mr. A. B. Percival, 
which nearly resembles one of the adult females sent by 
Mr. Bates, lie also sent a quite young female with the 
quills half-grown from the same locality. It would seem 
that the species ranges from tiie Lake District to West 
Africa, but our very small series does not afford sufficient 
evidence to determine this. 
Cuciilus gabonensis gabonensis. 
Cuculus gabonensis Lafresnaye, Rev. et Mag. Zool. 1853, 
p. 60—Type locality : Gaboon ; Sharpe, Ibis, 1907, p. 436 ; 
Bates, Ibis, 1911, p. 500. 
The valuable material how sent home by Mr. Bates, 
together with his notes on this species published in ‘The Ibis’ 
for 1911, throw considerable light on the complex plumage 
changes which the Gaboon Cuckoo undergoes between the 
stage of nestling and adult. Mr. Bates has already pointed 
this out, but his remarks are of such value that I wish to 
emphasise them again. 
Messrs. Sclater and Mackworth-Praed have recently 
