Fish; lizard, [44];

experiments with, [243];

ribbon, [250];

supposed sea-sers., [251], [255], et seq.;

living at great depths, [262];

carrying their eggs, [489].

Fissure, the gular, [328].

Fistulous teeth, [280].

Fitzinger, [383].

Flappers, [255], et seq., [267].