TRANSACTIONS 



OF 



THE ZOOLOGICAL SOCIETY 



OF LONDON. 



I. Report on the Collection of Fishes made by Mr. J. E. S. Moore in Lake Tanganyika 

 during his Expedition, 1895-96. By G. A. Boulenger, F.E.S., F.Z.S. With 

 an Appendix by J. E. S. Moore, A.R.C.S. 



Eeceived and read June 21, 1898. 



[Plates I.-VIIL] 



I HE examination of the collection of fishes brought home from Lake Tanganyika by 

 Mr. Moore, and with which I have been entrusted by him, has not yielded any such 

 startling results as have already been announced after study of the Invertebrates l . Of 

 the two series in the fauna of Tanganyika, distinguished by its explorer as the normal 

 freshwater and the halolimnic groups 2 , the latter is unrepresented in the collection. 

 This may be due either to the origin of the present fish-fauna not reaching so far back 

 in time as that of the Mollusca and other Invertebrates, or to the incompleteness of 

 the series brought home. The latter explanation may be the correct one, since, owing 

 to the lack of suitable dredging-apparatus, and to the difficulties of preserving, to 

 which Mr. Moore has alluded 3 , only a small proportion of the fishes of the Lake 

 could be collected, mostly littoral forms found about the rocks ; of the deeper-water 

 fishes, which were observed to be abundant both in species and in individuals, we are 

 still almost entirely ignorant ; it is therefore to be expected that further collections, 



1 J. E. S. Moore, " On the Zoological Evidence for the Connection of Lake Tanganyika with the Sea," 

 Proc. E. Soc. Lxii. 1898, pp. 451-458. 



2 J. E. S. Moore, " The Molluscs of the Great African Lakes," Q. Journ. Micr. Sci. 1898, pp. 159-204. 



3 L. c. See also "The Physiographical Features of the Nyasa and Tanganyika Districts,'' Geogr. Journ 

 1897. 



vol. xv. — part i. No. 1. — December, 1898. b 



