* 5 * 
CHAPTER IX. 
THE FISHES OF LAKE TANGANYIKA. 
As will have been seen in the preceding chapters, the 
fishes that have been recently discovered in Lake Tan- 
ganyika consist of 87 different species, of which 74 are 
new to science. Of these latter, four were originally 
collected by Captain Hore, 21 by the Lemaire Expedition 
and the officials of the Congo Free State, the remaining 
49 being collected by myself and my colleagues during 
the first and second Tanganyika Expeditions. For 
the elaborate and careful working out of this somewhat 
unique series we have been entirely indebted to Mr. 
Boulenger, of the British Museum, who published two 
fully illustrated reports on them in the transactions of 
the Zoological Society.* In the present work I have 
consequently merely incorporated Mr. Boulenger’s original 
descriptions accompanied by reproductions of Mr. Green’s 
careful and accurate drawings of the most conspicuous 
genera and species. 
In what follows the fishes have been arranged in their 
natural order, and only the descriptions of the few forms 
found in Tanganyika, which like Polypterus were already 
well known, being omitted. 
* For references to these and other papers containing descriptions of the fishes 
collected during the Tanganyika expeditions by Mr. Boulenger, see bibliography of the 
expeditions at the end of the volume. 
