TROUT FLY-FISHING IN AMERICA 



the anterior part of the body being less crowded than in spilurus 

 and siomias. In other respects virginalis scarcely differs from 

 clarkii. 



"The large fishes from Utah Lake are very pale in color, the 

 dark spots few and small, much as in variety macdonaldi, but 

 fewer, and more on the back. This pale coloration is characteristic 

 of lake and sea trout in general. It is doubtless partly due to the 

 alkaline character of the waters of Utah Lake." 



The Green-back Trout 

 Salmo-clarkii-sfomias (Cope) 



This trout is a native of the Arkansas and Platte Rivers and 

 "is especially fine in St. Vrain's River and the streams of Estes 

 Park." It is a small trout having a green back or greenish-brown 

 back with large black spots and a red throat patch. It also has 

 small scales and "it closely approaches lewisi and spilurus. The 

 black spots are always larger than in any of these, and mostly 

 gathered on the tail." 



"The green-back trout seldom exceeds three-fourths of a pound 

 in weight. It is very abundant in the streams of the Upper Ar- 

 kansas as well as in the Twin Lakes. It spawns in spring, in snow- 

 water if possible, and it will leave spring-water to find snow- 

 water. In winter, however, they seek for warmer waters. It is 

 said that when the winter breaks up the trout are too blind to see 

 bait. 



"In color the green-back is green, or even almost black on the 

 back. The lower fins and the throat are bright red, but there 

 is not much trace of the red lateral band. The black spots are large 

 and mostly confined to the posterior part of the body. In some 

 cases these spots are ocellated with paler. 



"At the spawning time, in May and early June, the males have 

 much red, but later the sexes become similar. In specimens found 

 about pools, there is often much red even in summer. Those from 

 deeper parts of the lake are always bright green, with a little red. 



"The flesh in these trout is extremely red, this color being 

 probably heightened by the character of its food. In the specimens 



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