58 FISH HARVESTING. 



a piece of their brethren if carefully tied round 

 a hook ; from six ounces to a pound is about 

 the average size. When they go to sea again 

 from the lakes I had no opportunity of proving, 

 but I imagine they go down with the floods, as 

 the spring salmon come up. 



The second form in which I mistook it for 

 a distinct species is that of the Humpbacked 

 Salmon (Salmo proteus, Pallas; Salmo gibber, 

 Suckley ; 'gerbuschaj Kamtschatka ; ' hud-do ' of 

 the Nesqually Indians ; ' hun-num ' of the Fraser 

 river Indians). In its general outline it differs 

 altogether from the Hook-nosed Salmon. The back 

 is much more arched ; nose curved, but not nearty 

 as much as in the mature Salmo lycaodon, and the 

 under-jaw turns up and terminates in a protu- 

 berance or knob ; teeth much more numerous, 

 sharper, and smaller; tail deeply notched, and 

 thickly spotted with dark oval-shaped marks. 

 The most conspicuous feature is a large hump 

 of adipose material situated on the shoulders, a 

 little anterior to the dorsal fin, and only found 

 in the male fish. It has generally been stated 

 that this hump grows upon the male fish after 

 entering the fresh-water : this is a mistake, 

 for I have seen them again and again taken in 

 the sea, before going up into the rivers, with 



