ar 
Salmonidz 337 
Salvelinus fontinalis. In value as food, in beauty, and in gami- 
ness Salvelinus malma is very similar to its Eastern cousin. 
In Alaska the Dolly Varden, locally known as salmon-trout, 
is very destructive to the eggs of the salmon, and countless 
numbers are taken in the salmon-nets of Alaska and thrown away 
as useless by the canners. In every coastwise stream of Alaska 
Fig. 246.—The Dolly Varden Trout, Salvelinus malma (Walbaum). Lake Pend 
d’Oreille, Idaho. (After Evermann.) 
the water fairly ‘“‘boils’”’ with these trout. They are, however, 
not found in the Yukon. In northern Japan occurs Salvelinus 
pluvius, the iwana, a species very similar to the Dolly Varden, 
but not so large or so brightly colored. In the Kurile region 
and Kamtchatka is another large charr, Salvelinus kundscha, 
with the spots large and cream-color instead of crimson. 
Cristivomer, the Great Lake Trout.—Allied to the true charts, 
but now placed by us in a different genus, Cristivomer, is the 
Fig. 247. —Great Lake Trout, Cristivomer namaycush (Walbaum). Lake Michigan. 
Great Lake trout, otherwise known as Mackinaw trout, longe, 
or togue (Cristivomer namaycush). Technically this fish differs 
from the true charrs in havingon its vomer a raised crest behind 
