Bibliographical Notices. 333 



be wanting to the Swiss lakes. Among the common Trout, S.fario, 

 we feel inclined to adopt more species than those of the Swiss ich- 

 thyologist, but as the specimens now figured are chiefly river varie- 

 ties, and certainly all one species, we are not so able to judge how 

 the varieties in the lakes of Central Europe agree with those from 

 the lochs of Scotland and Ireland, or how the characters which we 

 think entitle them to separation are kept up in other localities. We 

 shall look anxiously for the appearance of the Second Livraison and 

 the letter-press, when we shall endeavour to enter more fully upon 

 this curious subject ; in the mean time we would wish that encou- 

 ragement to the work in this country which is due to the persever- 

 ing zeal of its author. 



The History of the British Salmonida, by Sir W. Jardine, which 

 stands next upon our list, is a work which has also been some time 

 in preparation, and of which the first Fasciculus of six plates is now 

 published*. The figures are here drawn as near the size of life as 

 that of the paper will admit of, and are engraved with the view of 

 giving the effect of the newly taken fish ; all the details of anatomy, 

 scaling, and outward structure, which require most minute execu- 

 tion, being reserved for the volume which will contain the descrip- 

 tive letter-press, and which will appear with the last fasciculus of the 

 plates. The sketches for the colouring we know to have been nearly 

 all made at the water's edge from the fish when newly caught ; thus 

 endeavouring to preserve an imitation of the rich tints which so 

 quickly fade, and are lost in preserved specimens ; and the depart- 

 ment itself has been entrusted to, and performed with much credit 

 by Mr. Bayfield of London. It is expected that the whole species 

 found in the waters of Britain and Ireland will be illustrated in six 

 fasciculi, or upon from thirty- six to forty plates. 



On the two first plates before us are figured the Gilse or state of 

 S. salar before having spawned, the second being named with a? and 

 considered to represent the same state of the second species of Bri- 

 tish Salmon, whose history has scarcely yet been noticed by our 

 ichthyologists. Plate 3. represents S. albus of Fleming, given under 

 that name to identify without doubt the fish alluded to in the " Bri- 

 tish Animals," and so often referred to by our modern writers. This 

 is now known to be the young of our migratory species confused 

 together, and in this state extremely difficult to separate. 4. is a 

 variety of the large S.ferox, which we noticed M. Agassiz does not 

 include in his list of the fishes of Central Europe ; the specimen is 



* See Prospectus published in Annals of Nat. History, vol. ii. p. 138. 



