Yellowstone Trout 221 



lowstone River [Salmo clarkii lewisi). This sub- 

 species presents no marked differentiation from 

 the type of the species above described, except 

 that its body is somewhat more robust, with fewer 

 spots on the belly: the red throat mark is always 

 present and the scales are small. This fish is 

 very abundant in the Yellowstone and its upper 

 tributaries, and the river adjacent to and for 

 miles above Livingstone, Montana, is a typical 

 trout water, reminding the angler on Eastern 

 streams of the broad reaches, pools, and " swims " 

 of the Lower Beaverkill, Willowemoc, and Never- 

 sink trout rivers of Sullivan County, New York. 

 The pools of the Yellowstone are not wadable, as 

 a rule, but every inch of them can be reached and 

 threaded with the flies from the outlying shores 

 and shallows; and the trout are found often in 

 the rapids, but more frequently at the foot of 

 them, waiting for drifting and drowning insects 

 or surface-washed food of a more substantial 

 character. The angler has ample room for his 

 back cast, and there are no overhanging branches 

 to hold his feathers in mid-air. This fish takes 

 the fly viciously, but contents itself with deep and 

 long surges in its efforts to escape the hook. 

 There is another form of cut-throat which owns 



