THE OCCURRENCE IN THE PHILIPPINE ISLANDS OF 
THE FRESH-WATER AMPHIPOD PARACALLIOPE 
FLUVIATILIS (G. M. THOMSON) 
By Chas. Chilton 
Professor of Biology, Canterbury College, New Zealand 
The amphipod Paracalliope fluviatilis was described in 1879 
by G. M. Thomson, under the name Calliope fluviatilis, as oc- 
curring in fresh-water streams near Dunedin, New Zealand. 
Subsequently it was found to be common in fresh-water streams 
in all parts of New Zealand and to occur also in harbors, tidal 
estuaries, etc., where the water was brackish or at times quite 
salt. In 1899 Stebbing established the genus Paracalliope for 
this species and in 1906 1 he referred to it the species that had 
been described by W. A. Haswell in 1880 as Pherusa australis 
from specimens obtained at Botany Bay. Though nothing was 
said about the exact circumstances under which these specimens 
were found, it is to be presumed that they were taken in salt 
waters. Although I have been unable to obtain specimens of 
Pherusa australis from Australia for comparison, I feel con- 
fident that Stebbing is right in considering that species as a 
synonym of Paracalliope fluviatilis. 
Recently when examining the amphipods from Chilka Lake, 
India, I found numerous specimens of Paracalliope fluviatilis 
from different localities in the lake and others from Adyar 
River near Madras. Apparently it occurs on the shores of India 
under similar conditions to those in New Zealand. About a 
month after the manuscript of my report on the Chilka Lake 
amphipoda had been posted I received a few amphipoda from 
the Philippine Islands sent by Prof. C. F. Baker, and among 
them there were several specimens of Paracalliope fluviatilis 
from Nasugbu, “shallow water.” Along with them was a single 
specimen of Photis longicaudata (Bate and Westw.), but there 
was no record as to whether the specimens were obtained in 
fresh water or in salt. The specimens both from Chilka Lake 
1 Das Tierreich, Amphipoda, p. 297. 
513 
