92 REPORT OF STATE BOARD OF FISH COMMISSIONERS. 



as the finest of all the cutthroat trout. It is readily known by its 

 spotted belly, the black spots being evenly scattered over the whole sur- 

 face of the body, above and below. This is an excellent game-fish, and 

 from Lake Tahoe and Pyramid Lake it is brought in large numbers to 

 the markets of San Francisco. In the depths of Lake Tahoe, which is 

 the finest mountain lake of the Sierra Nevada, occurs a very large 

 variety which spawns in the lake, Salmo henshawi tahoensis. This 

 reaches a weight of twenty-eight pounds. 



In the Great Basin of Utah is found a fine trout, very close to the 

 ordinary cutthroat of the Columbia, from which it is derived. This is 

 known as Salmo clnrhii virginaJis. In Utah Lake it reaches a large 

 size. 



In Waha Lake in Washington, a lake without outlet, is found a small 

 trout with peculiar markings, called Salvia clarkii bouvieri. 



In the headwaters of the Platte and Arkansas rivers is the small 

 green-back trout, green or brown, with red throat-patch and large black 

 spots. This is Salmo clarkii ^tomias, and it is especially fine in St. 

 Vrain's River and the streams of Estes Park. In Twin Lakes, a pair 

 of glacial lakes tributary of the Arkansas near Leadville, is found Salmo 

 clarl-ii maedonaldi, the yellow-finned trout, a large and very handsome 

 species living in deep water, and with the fins golden yellow. This 

 approaches the Colorado trout, Salmo clarkii plenriticus, and it may be 

 derived from the latter, although it occurs in the same waters as the 

 very different green-back trout, or Salmo clarkii stomias. 



Two fine trout derived from Salmo clarkii have been lately discovered 

 by Dr. Daniel G. Elliot in Lake Southerland, a mountain lake near 

 Lake Crescent, but not connected with it, the two separated from the 

 sea by high waterfalls. These have been described by Dr. Seth E. 

 Meek as Salmo jordani, the "'spotted trout" of Lake Southerland, and 

 Salvia declivifrons, the "salmon trout." These seem to be distinct forms 

 or sub-species produced through isolation. 



The Rio Grande trout {Salmo clarkii spilurus) is a large and pro- 

 fusely spotted trout, found in the headwaters of the Rio Grande, the 

 mountain streams of the Great Basin of Utah, and as far south as the 

 northern part of Chihuahua. Its scales are still smaller than those of 

 the ordinary cutthroat trout, and the black spots are chiefly confined 

 to the tail. Closely related to it is the trout of the Colorado Basin, 

 Salmo clarkii plenriticus, a large and handsome trout with very small 

 scales, much sought by anglers in western Colorado, and abounding in 

 all suitable streams throughout the Colorado Basin. 



HucHO, THE HucHEX. — The genus Hvcho has been framed for the 

 Huchen or Rothfisch {Hvcho hvcho) of the Danube, a very large trout, 

 differing from the genus Salvia in having no teeth on the shaft of the 

 vomer, and from the Salvelini at least in form and coloration. The 



