FOSSORIAL. — Having a faculty of digging. The Fossorial Hymenoptera are a group of Wasp-like Insects, which burrow in sandy soil to make nests for their young.

FRENUM (pl. FRENA). — A small band or fold of skin.

FUNGI (sing. FUNGUS). — A class of cellular plants, of which Mushrooms, Toadstools, and Moulds, are familiar examples.

FURCULA. — The forked bone formed by the union of the collar-bones in many birds, such as the common Fowl.

GALLINACEOUS BIRDS. — An order of birds of which the common Fowl, Turkey, and Pheasant, are well-known examples.

GALLUS. — The genus of birds which includes the common Fowl.