THE TANGANYIKA PROBLEM. 
1 2 S 
LAKE MWERO. 
FISHES. 
7. Chrysichthys sharpii Mgr. 
8. Auchenoglanis biscutatus Geofl'r. 
9. Synodontis zambesensis Ptrs. 
10. Synodontis ornatipinnis Blgr. 
ClCHLID/E. 
11. Paratilapia macrocephala Blgr. 
12. Paratilapia mocruensis Blgr. 
13. Tilapia natalensis M. Web. 
14. Tilapia polyacanthus Blgr. 
In the above list the genera and species printed in italic are endemic to Lake Mwero. 
It is curious to note, moreover, that the Viviparas of Mwero 
are not absolutely unlike the Neothauma of Lake Tanganyika. 
In continuing: a general consideration of the faunas in the 
remaining great African lakes it will be convenient to pass 
now far to the north, omitting for the present Tanganyika 
altogether, and to consider the remarkable fresh water 
which is constituted by Lake Kivu. Kivu lies, as I have 
shown elsewhere, in part of the continuation of the same 
depression which contains Tanganyika, about 100 miles to 
the south of it. But beyond the fact that the outflow of 
Kivu finds its way into Tanganyika, the lakes appear to 
have no connection one with another, and their faunas are 
entirely distinct. The surface of Lake Kivu is 4,800 and 
odd feet above the level of the sea, and its water, as I 
have explained in Chapter V., contains a certain percentage 
of magnesium carbonate in place of the more usual 
modicum of sodium chloride which lake waters usually 
possess. From its great height the climate of Kivu is 
distinctly cool, and the fauna is poor in the extreme. 
We obtained the following fishes : — 
KIVU. 
4. Paratilapia bloyeti Sauv. 1883. 
5. Barbus altianalis Blgr. 1901. 
Mormyrid.*:. 
1. Gnathonemus stanleyanus Blgr. 
2. Mormyrus longirostris Peters. 
Characinhve. 
3. Ilydrocyon lineatus Blkr. 
4. Alestes macrophthalmus Gthr. 
5. Alestes lemairii Blgr. 
SlLURID.-E. 
6. Schilbe mystus L. (?) 
1. Tilapia nilotica L. 1757. 
2. Tilapia burtoni Gth. 1893. 
3. Paratilapia vitata Blgr. 1901. 
