SALMO LEA^NENSIS. 307 



Heckel and Kner say that their s^^awning-time is unknown. Though Herr 

 Aignor, of Salzburg, states that they spawn in April and May, yet females 

 caught in May have the eggs scarcely larger than millet seed. Their flesh is 

 white, and more prized in Austria for its flavour than that of the other 

 species of Trout. 



Salmo levenensis (Walker). — Loch Leven Trout. 



D. 12—14, A. 10—12, P. 12— 14, V.9,C. 10. Scales : lat. 120—130, trans. ^ 



26. 



The Loch Leven Trout is exclusively British, being almost limited to Loch 

 Leven, in Fifeshire, and other lochs in the south of Scotland, such as Loch 

 Lomond, and Loch Scone, in Perthshire. It is found in Windermere, and 

 probably occurs in other lakes of the north of England. The largest 

 specimen in the British Museum is twenty-one inches long. Mr. Day 

 has shown that under artificial conditions it may reach a weight of seven 

 pounds in six years. The common size is a little over a foot. This Trout 

 does not migrate. 



The upper part of the body is olive-green, becoming paler on the sides, 

 which are marked more or less with X-shaped brown or black spots, as well as 

 some rounded spots. There are round black spots on the sides of the head and 

 operculum. The belly inclines to yellow. The dorsal fin is grey, and, like 

 the adipose fin, has small black or brown spots. The upper half of the caudal 

 may be spotted, and the pectoral is usually blackish at the extremity, and 

 yellow at the base. 



This is a well-proportioned fish, more elegant and less deep in body than 

 S. farlo. The head, too, is proportionately smaller. The dorsal profile is a 

 little less arched than the abdominal contour. 



The fish is rather less than four and a half times as long as high, and five 

 to five and a half times as long as the head. The space between the eyes is 

 convex ; the snout is conical, and of moderate length. The mandible is longer 

 than the snout, and occasionally hooked in males. The maxillary bone extends 

 below the hinder margin of the eye. The pre-operculum has generally an indis- 

 tinct lower limb. The teeth are of moderate strength ; those on the body of the 

 vomer usually persist as a single series ; but on the head of the vomer, which 

 is broader than long, there is a transverse row of a few teeth. In the specimens 

 reared artificially at Howietown, near Stirling, Mr. Day records a double row 

 of teeth on the body of the vomer. Dr. Parnell mentions eight teeth on the 

 tongue. The fins are Avell developed, though not large, and all terminate in 

 sharp points. The dorsal and anal are truncated, with concave borders. The 



