le eee IN DC ES, 
PG 
Report on a Collection of Fishes made by Dr. A. Donaldson 
Smith during his Expedition to Lake Rudolf. By 
Dr. ALBERT GUNTHER, F.R.S. 
HAVING been intrusted by Dr. Donaldson Smith with the 
examination of the fishes collected by him during his recent 
expedition in Eastern Africa,I herewith give the result of my 
examination. Owing to the great difficulties of the transport of 
preserving materials, the number of specimens had to be restricted, 
the entire collection amounting to 35 specimens, which are refer- 
able to 18 species. The chief interest attached to this collection 
centres in the fishes from lakes Rudolf and Stephanie, whence 
I believe no specimens have been received previously. I distin- 
guished the following eight species among them : — 
Polypterus bichir. Citharinus Geoffroit. 
Chromts niloticus. Alestes rucppellit. 
Chromis tristramt. Distichodus rudolphi, sp. nov. 
Synodontis schal. Larbus, sp. 
It is a noteworthy fact that five of these species belong to the 
fauna of the Nile, although they are by no means limited to that 
river, having been found in various other parts of Tropical Africa. 
Chromts tristramt (or Acerina sillit, Gerv.) has been described 
from fresh and saline waters of the oases of the Sahara; and Dzstz 
chodus rudolphi is closely allied to the Nilotic D. vostratus. The 
other species enumerated in the following list were obtained ex 
route to Lake- Rudolf or on the return journey, in various locali- 
ties, which will be indicated under the head of the several species. 
