CATALOGUE 
OF 
THE FISHES OF SUMATRA 
BY 
WALTER VOLZ, Pu. D 
Privat-Dozent of Zoology at the University of Berne. 
Introduction. 
At the time I published my first work on the ichthyological 
fauna of Sumatra (26, p. 351), it was already my intention 
to begin a general study of the fishes of this island later 
on. For this purpose a remarkable and rich collection, made 
by Mr. G. Ѕснхюрев (27), on the eastern coast of Sumatra, 
was a great help to me, as in this part of the island only 
a very few zoologists had collected. 
To enable me to study the Sumatran fish-fauna it was 
necessary in the first p'ace to look over the complete literature 
concerning Sumatran fishes. As several marine species enter 
into the brackish and freshwater and many families and 
genera have representatives in the sea and in freshwater, 
I was obliged to change my first intention to treat only 
freshwater-fishes, which alone are of importance for the Zoo- 
geograph. So I thought it would be the best to bring together 
into a single list all fishes mentioned till now, wether they 
are inhabitants of fresh-, brackish or salt water. I agree 
completly with Professor WEBER (28), when he says, that 
only with the aid of such lists zoogeographical questions 
about the distribution of Indian Archipelago fish, and general 
discussions about the freshwater fauna can be treated. 
