110 Dr. A. Giinther on new Fishes 
XV.—New Fishes from the Gaboon and Gold Coast. 
By A. Gunruer, M.A., M.D., Ph.D., F.R.S. 
[ Plates II. ‘& IIL.) 
A most valuable collection of Fishes made by Mr. R. B. N. Walker 
in the Gaboon country has been recently secured by the Trustees 
of the British Museum. Besides several species which were 
formerly desiderata in this collection, the following prove to be 
new and of great interest, partly because some of them are the 
types of distinct groups, and partly because others prove that 
the Fish-fauna of the Upper Nile is nothing but the most eastern 
branch of that of Tropical West Africa. Repeatedly on former 
occasions I have directed attention to the identity of these two 
faunas ; and we may safely conclude that there is an uninterrupted 
continuity of the fish-fauna from west to east, and that the species 
known to be common to both extremities inhabit also the great 
reservoirs of water in the centre of the African continent. 
Mr. Walker had sent other collections to the Free Public 
Museum of Liverpool; and Mr. Moore was kind enough to lend 
them to me for examination, adding another very valuable col- 
lection made by H.T. Ussher, Esq., Deputy Assistant Commissary- 
General, Lagos, on the Bossumprah River, Gold Coast. The 
latter gentleman had previously sent a small collection to the 
British Museum from the same locality. 
The Cyprinoids are not mentioned in this paper, as their 
descriptions will be found in the forthcoming seventh volume of 
the ‘ Catalogue of Fishes.’ 
Ctenopoma Petherici (Gthr.). 
Dorsal spines sixteen, seventeen, or eighteen, anal spines nine 
or ten. ‘This species, first discovered by Mr. Petherick in the 
White Nile, occurs also in the Gaboon. 
Ctenopoma multispine (Ptrs.). 
This species was first described from East-African specimens 
with seventeen dorsal and ten anal spines. An example from 
the Gaboon, with twenty dorsal and eleven anal spines, agrees 
in every other respect with the East-African type, and must be 
regarded as a variety only. 
Mastacembelus cryptacanthus (Gthr.). 
The number of dorsal spines varies between twenty-four and 
thirty. A fine example, 16 inches long, has been sent to the 
Liverpool Museum, from the Bossumprah River, by Mr. Ussher. 
Hemichromis fasciatus (Ptrs.). 
Guinea, Lagos (Mr. Ussher), Gaboon (Mr. Walker). 
