139 
SOME RECENT ADDITIONS to the COPEPODA of 
LIVERPOOL BAY. 
By I. C. THOMPSON, F.L.8., and ANDREW SCOTT. 
With Plate VIII. 
[Read November 10th, 1899.] 
THE collection and examination of tow-net and dredged 
material, which is carried on more or less continuously at 
Port Erin, Isle of Man, and in the vicinity of Piel, Lan- 
cashire, still proves a means of adding fresh names to the 
extensive list of species from the district, which was 
published in connection with the meeting of the British 
Association in Liverpool in 1896. That list represents all 
the species of marine animals and plants recorded by the 
workers of the L.M.B.C. during the first ten years of its 
history, and practically brings us down to the end of 
1896. Wenow wish to place on record the various additions 
to the list of Copepoda that have come under our notice 
during the three years that have passed since the complete 
list was published. 
The present report represents an addition of fifteen 
species new to the district, including one new to science, 
Leptopsyllus herdmam (Pl. VIII.), and five species of 
Copepod fish parasites. Of these, two are open sea free- 
swimmers, the other (non-parasitic) species have either been 
obtained from dredged material or by digging holes in the 
shore between tide marks, the water being allowed to collect, 
and then bailed out, pouring it out through a fine sieve. 
1. Candacia pectinata, Brady, Copepoda of the British 
Islands, vol. I., p. 49, Pl. VIII. and X., 1878. 
This species was taken in the open sea near Port Erin 
in January last, and on several occasions during June and 
