"Brain of Polypterus. Upper aspect. a, medulia; b, corpora restiformia; c, cerebellum; d, lobi optici;…
"Brain of Polypterus. Lateral aspect. a, medulia; b, corpora restiformia; c, cerebellum; d, lobi optici;…
"Brain of Polypterus. Lower aspect. a, medulia; b, corpora restiformia; c, cerebellum; d, lobi optici;…