Spiny Dog-Fishes, [455]
Spiracular pseudobranch, [279], [284];
in Teleostomi, [284];
blood supply, [335]
Spiral valve, [264] f.
Spix, [558] n.
Spleen, [342]
Spoon-Bill, [491]; = Polyodon, q.v.
Sprat, [564]
Spiny Dog-Fishes, [455]
Spiracular pseudobranch, [279], [284];
in Teleostomi, [284];
blood supply, [335]
Spiral valve, [264] f.
Spix, [558] n.
Spleen, [342]
Spoon-Bill, [491]; = Polyodon, q.v.
Sprat, [564]