Green-back Trout 



Green-back Trout 



Salino stoinias (Cope) 



This trout is known only from the headwaters of the Platte and 

 Arl<ansas rivers and is abundant chiefly in the smaller streams and 

 brooks and in the shallow waters of lakes. It is the common 

 species in Twin Lakes, Colorado and in the waters about Leadville. 



It is a small, black-spotted trout, not often exceeding a pound in 

 weight, closely resembling the typical cut-throat trout, but differing 

 chiefly in the much greater size of its black spots which are mainly 

 gathered on the posterior half of the body. Mouth small; scales 

 small, about i8o; back deep green, sides sometimes red; flesh deep 

 salmon coloured. 



Yellow-fin Trout 



Saliiw macdoiialdi Jordan & Evermann 



This interesting and beautiful trout is known only from 

 Twin Lakes, Colorado, where it occurs in company with the green- 



