ENTOMOSTRACA NEW TO TITE FAUNA OF ORKNEY. 9] 
x, 
NOTES ON SOME FRESH-WA TER, BRACKISH- 
WATER, AND MARINE EHENTOMOSTRACA 
NHW TO THE FAUNA OF ORKNEY. 
BY THOMAS SCOTT, F.LS., 
NATURALIST TO THE FISHERY BOARD FOR SCOTLAND. 
[Read 29th October, 1889.] 
Durine July of the present year (1889), I was en- 
gaged carrying out some investigations among the 
Orkney Islands, on behalf of the Scientific Committee 
of the Fishery Board for Scotland, and took the 
opportunity while there to collect, by hand-net and 
dredge, a quantity of fresh-water and marine 
organisms, including a number of Entomostraca. 
I now propose, in the following notes, to refer to a 
few species of Ostracoda obtained in this way which 
do not appear to have been previously recorded from 
these islands. 
. 1. FRESH-WATER AND BRACKISH-WATER SPECIES. 
I was able on only one occasion to make a pass- 
ing examination of the Fresh- and Brackish-water 
Entomostracan fauna, viz., on the Saturday evening 
previous to our departure for the Firth of Forth. 
We had anchored near Stromness, and about 5.30 p.m. 
I went ashore, taking with me one of our smaller 
tow-nets, my intention being to visit the famous 
“Standing Stones of Stenness” said to be distant. 
from Stromness about six miles, and to take a look 
at the flora of the district and try a dip with the 
tow-net in any suitable ditch or other fresh-water 
