A STUDY ON TROUT AND YOUNG SALMON. 251 



collection sent to me from the Riksmuseum, differs however 

 highly as well from the young salmon reared by me as also 

 from those found ind our museums, exhibiting the same mixture 

 of trout and salmon characters as all the specimens I have seen 

 from middle swedish localities. 



From other localities than the middle svedish lake and 

 river complex, where Vener and Vetter-Salmon is to be found 

 Wiedegren evidently has not had youg salmon for examination. 

 The conclusion thus would seem justifiable, that all his descrip- 

 tions on Sdlmo salar in this stage have been prepared with 

 the relict lake form of Middle Sweden as material. 



Turning to the classical descriptions by Nilsson i his 

 „Scandinavisk fauna" Lund 1855, we find, that the smallest 

 „laksbøHing" or grisle, described by him, is a little more than 

 20 inches long (Norw.). accordingly more than 50 cm. long. 

 The next size is „a youg salmon IIV2 inches long," a little more 

 than 30 cm. However this latter size has not been examined 

 by Nilsson, but the description is prepared on the strength of 

 a drawing in Sir Jardines work on british fishes. Sir Jardine 

 had procured the specimen „on the sea-coast" presumably the 

 coast of England. 



Quite briefly he mentions a specimen of 9V2 inches (24 cm.) 

 collected by adj. Lilljeborg on the norwegian coast. It is kept 

 at the Lund museum and I have not seen the specimen. 



Respecting these two specimens I am thus not able to speak 

 from personal experience. However the very imperfect descrip- 

 tions of Nilsson seem to indicate, that Sir Jardine's specimen 

 possibly has been a real salmon. Regarding the other speci- 

 men, from Norway, it is not possible to express any defiente 

 opinion. However, Nilssons remark that „it is much fatter and 

 plumper than trout of the same size", seemes to make it doubt- 

 full whether it is a salmon, these on the contrary being much 

 more slender and elegant in shape than trout of corresponding 

 size. Locally the specimen was named „Blankøre", a name 



