on Galbulidae, [445];

on Mesites, [186] f.;

on Metopidius and Hydralector, [269] n.;

on trachea of Paradise-bird, [545] n.;

on Passeres, their song-muscles, [466];

on Plotus, [72] n., [81] n.

Fore-arm, [8]

Forehead, [20]

Fore-neck, [20]

Foreteller, by day, [357];