In fishing for pike-perch in different parts of the country I have noticed its variableness of coloration, which might be inferred from some of its names, as gray pike, yellow pike, blue pike, white salmon, etc. As I remember them, those caught in brackish water in Maryland were quite greenish, with silvery reflections and with dark markings. On Lake Erie the coloration varies somewhat with age, the younger ones being known as blue pike, the mature fish as yellow pike, and the oldest and largest as gray pike. On the rivers of the Middle West that are subject to periods of high and muddy water they are much paler. On the many pine-fringed lakes in northern Wisconsin and Minnesota the variation in color is quite apparent, both as to the ground color and markings. The older fish are very dark and dull on the back, and the younger ones much brighter. THE SAUGER (_Stizostedion canadense_) The sauger was first described by C.H. Smith, in 1834, who named it _canadensis_, from having collected his type specimens in Canada. It is also known as jack, sand-pike, gray-pike, and rattlesnake pike. It is closely related to the pike-perch, though smaller and more slender, with a more pointed head and smaller eye. It is distributed through the Great Lake region and in the upper portions of the Missouri, Mississippi, and Ohio rivers. It grows to a length of twelve to fifteen inches. Its color is paler than the pike-perch, grayish above, with brassy sides, which are marked by several blackish blotches or patches, hence "rattlesnake pike." It is not nearly so good a food-fish as the pike-perch, and is not of much importance as a game-fish. It may be fished for with the same tackle as that recommended for the calico-bass or crappie, in the same situations mentioned for the pike-perch. I have taken it with a gaudy fly on the Ohio and Muskingum rivers, in Ohio, and in the Big Sandy and Tygert Creek, in Kentucky; also by still-fishing and trolling on Lake Erie about the Bass Islands. The meaning or etymology of the name "sauger" is unknown. THE YELLOW-PERCH (_Perca flavescens_)