63 



IDE. 



Cyprinus idns, Linn.5;us. 



Leuciscus idus, Cuviek. Bloch; pi. 36. 



" Yabrell; Br. Fishes, vol. i, p. 395. 



The only authority for placing this species among British 

 fishes is Stewart, in his "Elements," etc., who says that an 

 example was obtained from the mouth of the Nith by Dr. 

 AValker , but it has not since been recognised, and its claims 

 therefore must be regarded as doubtful. It is minutely 

 described by Artedi under its Swedish name of Id, and also 

 by Ekstrom, who says it is common in Scandinavia, as far 

 north as Lapland. It also wanders into the bays of the 

 Baltic Sea, where the water is known to be much more fresh 

 than in the open ocean. Several of the fishes of this family 

 do so, and it is just possible that this species may have done 

 the same. 



