. Report of explorations in Colorado and Utah during the summer of 1889 : with an account of the fishes found in each of the river basins examined . very much individual variation is shown. The trout fromHeart Lake and from Henrys Lake are essentially like others from Walla Walla inthis regard, and those from the Yellowstone below the falls have the spots generallysmaller than in those from the lake. The trout of the Upper Missouri region havereceived the name of Salmo lewisi Girard, but I can not recognize S. lewisi as evenvarietally distinct from 8. mykiss. In fact, as elsewhere stated in th
. Report of explorations in Colorado and Utah during the summer of 1889 : with an account of the fishes found in each of the river basins examined . very much individual variation is shown. The trout fromHeart Lake and from Henrys Lake are essentially like others from Walla Walla inthis regard, and those from the Yellowstone below the falls have the spots generallysmaller than in those from the lake. The trout of the Upper Missouri region havereceived the name of Salmo lewisi Girard, but I can not recognize S. lewisi as evenvarietally distinct from 8. mykiss. In fact, as elsewhere stated in this paper, there isgood reason to believe that the Yellowstone Lake was stocked originally from SnakeRiver, through Pacific Creek, Two-Ocean Pass, and Atlantic Creek. It is, moreover, notunlikely that an interchange of individuals still occasionally takes place across theContinental Divide. The trout of the Yellowstone Lake and of many of its tributaries above the fallsare infested by a parasitic worm (Bibothrium cordiceps Leidy). Of the specimens ex- Bull. U. S. F. C. 1889.—(To face page 50 — 1. Jordan. Yellowstone Explorations. Plate Bull. U. S. F. C. 1889.—(To face page 50—2.) Jordan. Yellowstone Explorations. Plate XII.
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