62 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Morecambe 



Rock Ch. 



Young Plaice (Pleuronectes platessa). 



Empty. 



R. Mersey. 

 R. Mersey. 

 Heysliam Lake. 



Morecambe. 



Rock Ch. 

 Morecambe. 



Garston. 



Oct. 14 



7 



ash. 



2-2f inch. 



Oct. 28 



11 



»j 



2-2| „ 



Nov. 4 



3 



>J 



H-2| „ 



Nov. 9 



7 



J i 



2-21 „ 



Nov. 9 



3 



> > 



lf-21 „ 



Nov. 14 



6 



> J 



2-2i ,, 



Nor. 16 



5 



>> 



2-21 » 



1 Nov. 17 



S 



JJ 



2-2f 



Dec. 8 



1 



20 



>> 



H-2I „ 



1 C rang on, 5 Atylus, 5 

 Empty. 



1 Pseudocwma, 1 Am- 

 phipoda. 2 Empty. 



3 Crangon, 1 Copepoda, 

 5 Ampbiphoda. 



1 Pseudncuma, 2 Car- 

 dium, 1 Empty. 



1 Copepoda, 1 Gam- 

 mams, 1 An. tiss. , 3 

 Empty. 



3 Crustacea, 2 Empty. 



1 Copepoda, 1 Amphi- 

 poda, 7 An. tiss. 



1 Crangon, 1 Sponges, 

 7 Air. tiss., 11 Empty. 



These lists show that of the 893 young Plaice, 

 547 had Crustacea. 

 134 „ Mollusca. 

 30 ,, Annelida. 

 128 „ Animal tissues (indistinguishable). 

 182 were empty. 

 Of the 547 (from |- to 2| inch in size) with Crustacea 



296 had Copepoda. 

 In a total of 348 fish from -J to If inch in size, 



205 had Copepoda. 

 In a total of 545 fish from If to 2| inch in size, 



91 had Copepoda. 

 These Copepoda have been kindly examined for us by 

 Mr. I. C. Thompson, F.L.S., and he reports that they are 

 chiefly Harpacticidae, the majority being Jonesiella hycence. 

 Other Copepoda present in numbers were Longipedia 

 coronata and Canuella perplexa. 



