MARINE BIOLOGICAL STATION ON PUFFIN ISLAND. 65 
Prince of Monaco’s experiments, seems on the whole—if it 
gives a bright enough light and works satisfactorily— 
to be the simplest and most economical method, and the 
one which it would be best to adopt where no vessel 
already provided with an electric installation is available. 
As to the practical application of this method to fisheries, 
although there can be no doubt that the electric light 
acts powerfully in attracting many free-swimming animals, 
and especially Crustacea, there is no very good evidence 
that it attracts marine fishes. More experiments are 
required before the matter can be considered as settled, 
but I am inclined at present to agree with the opinion 
which has been expressed by some of the American 
investigators, that the method is of more value to the 
scientific biologist than to the practical fisherman. — 
ADDITIONAL COPEPODA. 
While collecting near low water mark on the south spit 
at Puffin Island, one evening in summer, I found attached 
to a colony of Lepralia, under a stone, a beautiful little 
discoid pink and white Copepod, which Mr. Thompson has 
since identified as Artotrogus orbicularis, Boeck, a species 
never previously found in British seas. Ninety-four species 
of Copepoda in all have now been recorded from our 
district, of these thirteen are new to Britain and four 
(Lichomolgus sabelle, Hersilioides puffint, Cymbasoma 
herdmami, and Jonesiella hyene) new to science. Mr. 
Thompson tells me that since the publication of his last 
report (“‘Fauna,” vol. ii., containing Reports ii. and ili. and 
Appendix), he has found the three following species (new 
to our lists) in addition to the Artotrogus mentioned 
above, all from the examination of mud and other deposits: 
Amymone longimana, Delavalia palustris and Artotrogus 
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