30 LIVEEPOOL BIOLOGICAL SOCIETY. 



Prince of Monaco's experiments, seems on the whole — if it 

 gives a bright enough hght and works satisfactoril}'' — 

 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 Puf&n 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 sahellcc, Hersilioides piiffirii, Cymhasoma 

 herdmani, and Jonesiella hyce7ice) new to science. Mr. 

 Thompson tells me that since the publication of his last 

 report (''Fauna," vol. ii., containing Keports ii. and iii. 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 longlmanay Delavalia palustris and Artotrogus 



