Cacus (Ca′cus), a three-headed monster and robber.

Cadmus (Cad′mus), one of the earliest of the Greek demi-gods. He was the reputed inventor of letters, and his alphabet consisted of sixteen letters. It was Cadmus who slew the Boeotian dragon, and sowed its teeth in the ground, from each of which sprang up an armed man.

Caduceus (Cadu′ceus). The rod carried by Mercury. It has two winged serpents entwined round the top end. It was supposed to possess the power of producing sleep, and Milton refers to it in Paradise Lost as the “opiate rod.”

Calisto (Calis′to), an Arcadian nymph, who was turned into a she-bear by Jupiter. In that form she was hunted by her son Arcas, who would have killed her had not Jupiter turned him into a he-bear. The nymph and her son form the constellations known as the Great Bear and Little Bear.

Calliope (Calli′ope). The Muse who presided over epic poetry and rhetoric. She is generally depicted using a stylus and wax tablets, the ancient writing materials.

Calpe (Cal′pe). One of the pillars of Hercules.

Calypso (Calyp′so) was queen of the island of Ogygia, on which Ulysses was wrecked, and where he was persuaded to remain seven years.

Cama (Ca′ma). The Indian god of love and marriage.

Camillus (Camil′lus), a name of Mercury, from his office of minister to the gods.

Canache (Can′ache). The name of one of Actaeon’s hounds.