GEN. SALMO. THE LOCHLEVEN TROUT. 139 



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 caught 

 in the Tweed : and Mr. Wilson received a number 

 similarly formed from Lochdow, near Pitmain, in 

 Inverness-shire. 



(Sp. J28.) S. Levenensis. Lochleven Trout, This 

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

 deference to the opinion of those who have carefully 

 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 minutely in 

 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-fifth 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 lighter ; gill- 



