MARINE BIOLOGICAL STATION AT PORT ERIN. 83 
spinosa, are additions to the British Fauna, and the four 
last are new to science. The chief causes for so large an 
addition to our Copepodan fauna are, first the more special 
attention we now pay to the minute examination of mud 
and other dredged materials, which have yielded the major- 
ity of the above-named species—Port Erin bay and 
particularly the muddy bottom just inside the breakwater 
having proved to be specially rich ground ; and, secondly, 
the establishment of Professor Herdman’s “ Fishery Lab- 
oratory’ at University College, where large numbers of fish 
are constantly being examined, and, where under the keen 
scrutiny of Mr. Corbin a large number of fish parasites have 
been found in situ on the gills of the fishes. Many of 
these yet await examination, and there is evidently still 
much to be achieved by a careful examination of the 
mouths and gills of our common fishes. The branchial 
sacs of Ascidians collected by Prof. Herdman, have yielded 
many kinds of parasitic Copepoda, one of these, Notop- 
terophorus papilio, a remarkably interesting animal, being 
new to the district.”’ 
A new Copepod, Lichomolgus agilis, has been very 
recently found and described by Mr. T. Scott, of the 
Scottish Fishery Board, as frequenting Cockle shells. 
This Copepod we have also found here, in all the cockles 
examined, and it is probably a common form which has 
been hitherto overlooked on account of its peculiar habitat. 
The Hydroid Zoophytes and Polyzoa collected during 
the year have, as in previous seasons, been examined by 
Miss L. R. Thornely, with whom I have gone over a 
good deal of the material, including any doubtful or diffi- 
cult specimens. One of the most interesting points 1s that 
Miss Thornely has been able to establish that the Lafoea 
pygmea, Ald., of Hinck’s ‘‘ Zoophytes”’ is really, as Alder 
seems to have indicated in his drawings, a species of 
