SEA-FISHERIES LABORATORY. 



245 



months after liberation. On the other hand, five (four 

 plaice and one flounder) were found in offshore waters 

 from four to nine months afterwards. 



Experiment 9 (Chart III.) indicates an inshore 

 migration of flounders in the early summer. Not only 

 did all the recaptures of flounders taken out from Piel 

 take place in Morecambe Bay and in the Duddon, but 

 four flounders caught outside Walney and liberated there 

 made the same migration. The small numbers of 

 flounders dealt with do not justify any attempt to 

 construct the migration paths of this fish, but evidence of 

 an inshore movement in the late spring or early summer 

 appears to be forthcoming. All the flounders recaptured 

 from the last experiment were fish in very fine condition. 

 Without exception, all were feeding greedily on 

 Lamellibranch molluscs (Tellina scrobicularia, Mactra) 

 when recaptured. 



Experiment 6, 6th March, 1906. 



Station : Colwyn Bay. 



Fish caught in Colwyn Bay and in Conway Bay, two 

 hauls. 



Analysis of Sizes of Fish Liberated. 



Sizes (inches) .. 



No. of plaice .. 

 No. of flounders 

 No. of dabs 



7-1 



1 2 



7^ 



'4 



8 



81- 



H 



8 I 



9 



5 



4 



5 



4 



1 

 2 



l 



— 



1 



— 



1 



— 



2 



4 



2 



9i 



Sizes (inches) 



n 



9f 



10 



101 



ioj 



lOf 



11 

 1 



11} 





No. of plaice 



i 



1 



1 

 1 



1 



I 



1 





No. of flounders 





No. of dabs 



1 







