GEN. SALMO. THE LOCHLEVEN TROUT. -39 



the head, making the fish appear in some degree 

 hump-backed. We happen to know that an indi- 

 vidual caught in the Teviot last autumn, besides 

 this hump, had a similar elevation near the tail, 

 which gave it a singularly distorted appearance ; but 

 it seemed quite healthy and was in good condition. 

 Pennant mentions a variety, occurring in a river and 

 lake in Wales, which he says is naturally deformed, 

 having a strange crookedness near the tail. Mr. 

 Yarrell describes and figures one which has the up- 

 per jaw short and truncated, so that the under jaw 

 becomes remarkably prominent. This monstrosity 

 was observed by Lord Home in an individual cauo-ht 

 in the IVeed : and Mr. Wilson received a numoer 

 similarly formed from Lochdow, near Pitmam, in 

 Inverness-shire. 



(Sp. ]28.) S. Levenensis. Lochleven Trout, inis 

 fine Trout is here given as a distinct species, out of 

 deference to the opinion of those who have caretuny 

 examined and described it, rather than from a con- 

 viction that it is more entitled to be so regarded 

 than several other kinds now looked upon as mere 

 varieties. Dr. Parnell has described it mmuteiy m 

 his essay on the Fishes of the Firth of Forth, and we 

 avail ourselves of his account for its principal pecu- 

 liarities. The head is rather more than one-fitth of 

 the whole length ; gill- cover produced behind, pre- 

 operculum rounded. Colour of the back deep olive- 

 green ; sides lighter ; belly inclining to yellow ; 

 pectoral orange, tipped with grey ; dorsal and cau- 

 dal fins dusky; ventral and anal fins lio-hter; gill- 



