FIG. 76. Ganoid fishes Polyp terns bihir. 



FIG. 77. Ganoid fishes American bony pike, Lepidosteus. 



Photo: Thieie. FIG. 78. Bonv- or food-fishes The Salmon. 



FIG. 79. Bony- or food-fishes The Common Eel. 



Photo : Underwood. 



