Salmonidz 929 
where they are often very logy, one is occasionally hooked 
which tries to the utmost the skill of the angler to prevent his 
tackle from being smashed and at the same time save the fish.’’ 
Of the various forms derived from Salmo clarkiit some mere 
varieties, some distinct species, une following are among the 
most marked: 
Salmo henshawt, the trout of Lake Tahoe and its tributaries 
and outlet, Truckee River, found in fact also in the Humboldt 
Fia. 235.—Tahoe Trout, Salmo henshawi Gill & Jordan. Lake Tahoe, California. 
and the Carson and throughout the basin of the former glacial 
lake called Lake Lahontan. This is a distinct species from 
Salmo clarkiz and must be regarded as the finest of all the cut- 
throat-trout. It is readily known by its spotted belly, the 
black spots being evenly scattered over the whole surface of 
the body, above and below. This is an excellent game-fish, and 
from Lake Tahoe and Pyramid Lake it is brought in large num- 
bers 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 
henshawt 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 clarkit virginalis. 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 Salmo clarkit bou- 
viert. 
In the head-waters of the Platte and Arkansas rivers is the 
small green-back trout, green or brown, with red throat-patch 
