[ 137 ] 



IV. Third Contribution to the Ichthyology of Lake Tanganyika. — Beport on the 

 Collection of Fishes made hy Mr. J. E. S. Moore in Lakes Tanganyika and Kivu 

 during his Second Expedition, 1899-1900. By G. A. Boulenger, F.B.S., F.Z.S. 



Eeceived and read January 15, 1901. 



[Plates XII.-XX.] 



In presenting this report on the second collection made in Lake Tanganyika by 

 Mr. Moore ^, I may at once state that the expectations held out in the first report, 

 as to the possible occurrence, in the greater depths of the lake, of forms differing 

 fundamentally from the typically African freshwater forms, have not been in any way 

 realized. Although fully equipped for a complete survey of the lake, both on its 

 shores and in its depths, which we know to extend beyond 300 fathoms, the Tangan- 

 yika Expedition organized by Professor Ray Lankester has failed to bring home 

 representatives of any but the few families already known from the lake, and which 

 occur also in the other basins of Tropical Africa '^. Its results only further emphasize 

 the striking fact of the extraordinary multitude and diversity of the Cichlid 



' For an account of the Expedition, cf. Geographical Journal, vol. xvii. 1901, p. 1. 



^ Since the publication of the first report, in which lists were given of the iishes of the principal lakes of 

 Central Africa, the ichthyologioal fauna of Lake Mweru, which, from its vicinity to Tanganyika, is of special 

 interest, has become known through collections made by Mr. Alfred Sharpe, C.B., and the Lemaire Expedition 

 (Congo Free State). It enables me to draw up the following list, in which the names of the endemic species 

 are printed in italic, the general habitat of the others being given in brackets : — ■ 



MoEJITEIDiE. 



1. Gnathonemus stauleyanus Blgr. (Congo). 



2. Mormyrus longirostris Peters (Nile, Congo, 



Zambesi). 



Characinid/"e. 



3. Hydrocyon lineatus Blkr. (Senegal to Congo, 



Tanganyika, Zambesi). 



4. Alestes macrophthalmus Gthr. (Gaboon, Ogowe, 



Congo, Tanganyika). 

 .5. Alestes Icmairii Blgr. 



SlHTRIBiE. 



6. Schilbe mystus L. (?) (Nile, Calabar, Congo). 



7. Chrysiohthys sharpii Blgr. 



8. Auohenoglanis biscutatus Geoffr. (Nile, Trop. 



Africa). 



9. Synodontis zambesensis Ptrs. (Zanzibar to 



Mozambique, Nyasa). 



10. Synodontis ornatipiunis Blgr. (Congo). 



CiCHLinas. 



11. Paratilapia maerocephala Blgr. 



12. Paratilapia mocrinnsis Blgr. 



13. Tilapia natalensls M. Web. (Congo, E. & S.E. 



Africa). 



14. T\\&\)\a. pohjacanthus Blgr. 



VOL. 



XVI. — PART III. No. 1. — October, 1901. y 



