454 YELLOW-BINNED TROUT — JORDAN Al.D EVERM.IXN. 



known to as (lie existence of the species, and accompanied our trip in 

 search of it. 



There are two kinds of trout native to this lake, the yellow-fin or 

 " Salmon Trout," above described, and the smaller "Greenback Trout," 

 also found in the Arkansas and Platte, Salmo mylciss stomias. 



The yellow-tin trout lives largely on the gravels and about the north 

 or sunny side of the lake. It reaches a weight of 7 to 10 pounds, the 

 very large fish being usually taken with the spear; specimens of 13 

 pounds' weight are reported. The species never leaves the lake except 

 to spawn, and most of thein spawn in the lake. It has never been seen 

 in the river, and rarely in very deep water. 



This fish feeds freely on young sucker^and even on young trout. It 

 spawns in spring, and the suckers infest its spawning beds, devouring 

 the eggs. 



The flesh of the yellow-fin trout is very pale, and more watery than 

 that of the other trout of Colorado. In flavor, its flesh is not inferior 

 to the other species. The color of the flesh may be due to the faet that 

 it feeds on fishes rather than on Crustacea. The "Greenback Trout" 

 (S. m. stomias) feeds on Crustacea and has very red flesh. 



We have taken pleasure in naming this species for Hon. Marshall 

 McDonald, U. S. Commissioner of Fisheries, in recognition of his serv- 

 ices in spreading the range of Salmonidce in America. 



University of Indiana, January 10, 1890. 



