224 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Fish Parasites. — The following forms were identi- 

 fied ; they are described in detail elsewhere in this Keport : — 

 Trematodes : Distomum valdeinfiatinn, Stossich (from the 

 dab); Gasterostomum sp. (from the plaice); Udonella 

 caUgorum on Caligus (from the cod). Cestodes : Botlirio- 

 cephalus punctata* , Miller (from the turbot and brill). 

 Protozoan : Lymphocystis johnstonei, Woodcock (from the 

 flounder). Several flounders, abnormally scaled, were also 

 taken, and are figured elsewhere. 



Sizes of the Fish Caught. 



The tables give, for the most part, only the sizes 

 of the smallest and largest fishes caught in each haul. 

 But in all the hauls plaice of over 14 inches long are 

 distinguished from those of under 14 inches, and in one 

 haul all the plaice of under 14 inches were individually 

 measured so as to get an average size. This was also done 

 with the plaice of over 14 inches in length. The results 

 may be summarized as follows : — 



(1) Plaice over 14 inches in length formed 8 % of all plaice 



caught ; 



(2) Plaice under 14 inches were 92 % of all caught ; 



(3) The average length of the plaice over 14 inches was 



16 inches ; 



(4) The average length of the plaice under 14 inches was 



9*8 inches ; 



(5) The average length of all the plaice caught was about 



10J inches. 



Among the other flat fishes caught were some that 

 struck us as unusually large (for fish in in-shore waters). 

 Several dabs were obtained measuring from 13^ to 14 

 inches and weighing from lib. 1 oz. to lib. 3| oz. On the 

 18th November, when a further visit to the Bay was made, 



