Salmon Trout of Lake Southerland 



body and tail profusely spotted with black; ventrals and pectorals 

 dark; no red on lower jaw. 



This trout differs from Salmo crescentis in being more 

 slender, in having the back much less elevated, the head more 

 slender and pointed, the gillrakers shorter, and the maxillary 

 straighter, narrower and longer. 



It is probably more closely related to the steelhead trout series 

 than to the cut-throat series, and perhaps should be placed as a 

 subspecies of Salmo gairdneri. 



Salmon Trout of Lake Southerland 



Salmo declivifrons Meek 



The general colour of this trout closely resembles that of the 

 blueback trout of Crescent Lake. It is, however, some darker, 

 and has no spots except on the caudal fin. The upper ante- 

 rior profile is also much more curved. 



Head 3^; depth 4f; eye 5|; snout 4|; maxillary if; scales 

 148; D. 10; A. n; Br. 10; gillrakers 7+10. Body elongate, back 

 elevated, anterior profile much decurved; tip of snout below axis 

 of body; gape nearly horizontal, more so than in other trout; max- 

 illary reaching beyond eye; dentition strong. Colour, dark blue 

 above and on side to lateral line posteriorly, becoming abruptly 

 silvery; belly nearly white; no spots on head or body or elsewhere 

 except few on caudal fin; upper margin of lower jaw black, a 

 dark blue patch on cheek, extending obliquely upward and 

 backward to near upper edge of opercle; pectorals, ventrals and 

 anal yellowish. 



Known only from Lake Southerland where it is occasionally 

 taken and where it is called "Salmon trout," according to Profes- 

 sor Elliot, who collected the type. He says, "it is easily recog- 

 nizable, not only by the sharply curved upper outline of the 

 fore part of the body, but also by its quite different style of 

 colouration, which resembles somewhat that of the blueback of 

 Lake Crescent. 



"As there is no water connection between these 2 lakes, and 

 Lake Southerland is 75 feet lower than Crescent Lake, and, 

 moreover, the fish of that lake having no communication with 

 the sea on account of a very high precipitous fall a short dis- 

 tance from its outlet, it cannot be supposed that these two 



184 



