Fig. 77.—Ganoid fishes—American bony pike, Lepidosteus.
Photo: Thiele.
Fig. 78.—Bony- or food-fishes—The Salmon.
Fig. 79.—Bony- or food-fishes—The Common Eel.
Photo: Underwood.
Fig. 80.—Lung fishes—Australian lung fish, Ceratodus.
Fig. 77.—Ganoid fishes—American bony pike, Lepidosteus.
Photo: Thiele.
Fig. 78.—Bony- or food-fishes—The Salmon.
Fig. 79.—Bony- or food-fishes—The Common Eel.
Photo: Underwood.
Fig. 80.—Lung fishes—Australian lung fish, Ceratodus.