from the Ogowe River and Old Calabar. 263 



Ophiocephalus obscurus, Gthr. 



Ctenopoma gabonense, sp. n. [?=Ct. multispine, Sauv., 



nee Ptrs.). 



nanum, sp. n. 



Ktngsleyce, sp. n. (?= Gt. Petherici, Sa uv. , nee Gthr .) . 



Chromis ogowensis, sp. n. (?= Ch. microcephalics, Sauv., 



nee Blkr.). 

 Cynoglossus senegalensis, Kaup. 

 Clarias Walkeri, sp. n. 

 Eutropius liberiensis, Hubrecht. 

 Chrysichthys Biittikoferi, Stdchr. (= Ch. macrops, Sauv., 



nee Gthr.). 

 Barilius bibie, Joannis. 

 Alestes longipinnis, Gthr. 



Kingsleym, sp. n. 



Mormyrus amblystoma, sp. n. 

 Notopterus nigri, Gth 



lir. 



Deducting from M. Sauvage's list three species which I 

 consider merely synonyms, and allowing for four others which 

 I believe to figure in my and M. Sauvage's lists under different 

 names, I compute the total number of species known at 

 present from this river to be fifty-one, a number which 

 may be expected to be doubled by future investigations. 

 The fish-fauna of the Nile consists of about ninety species. 



The localities which will be mentioned in this report 

 are the following: — 



Warri, on the Forcados River (mouth of the Niger). 

 Azumine Creek, freshwater, running into theOpobo River, 



with a swift current, 25 miles from the sea (Niger 



delta) . 

 Egwanga, on the Opobo River (Niger delta). 

 Corisco Island, off the Gaboon Coast. 

 Lambarene, Ogowe River. 

 Talagouga, about 180 miles from the mouth of the 



Ogowe. 

 Kondo-Kondo, an island in the Alemba Rapids of the 



Ogowe. 



Reptiles and Batkachians. 

 The Reptiles were collected at Lambarene, and belong to 

 the following species : — 



1. Cycloderma Aubryi, D. B. — A young specimen well 

 agreeing with one figured by Peters (MB. Berl. 

 Akad. 1876, p. 117). 



19* 



