Pan, in Grecian mythology, the god of flocks and shepherds. He was the son of Mercury by Callisto, Dryops, (Eneis, or Penelope, or according to some authorities of Penelope by Ulysses or by all her suitors in common. He is represented with horns, a pug nose, and a goat's beard, feet, and tail, and was perfectly developed from his birth. When his mother first saw him she ran away in fright, but Mercury carried him to Olympus, and the nymphs nursed him. He was a favorite with all the gods, and was especially the companion of Bacchus. He had a terrific voice, by which he frightened the Titans in their struggle with the gods. Phidippides asserted in Athens that Pan promised him to frighten away the Persians if the Athenians would worship him; and hence originated the expression " panic fear." He played upon the syrinx or shepherd's flute, of which he was the inventor, and was the patron of hunters, but was dreaded by travellers. He was the god of bee-keepers and fishermen, and according to Servius was considered as the god of nature generally, or a personification of the universe (Gr. ), whence his name, though Pan is also associated with the Greek , Latin pascere, to feed or pasture. He loved the nymph Echo, by whom or by Pitho he became the father of lynx, the nymph Pitys, who was metamorphosed into a fir tree, and Syrinx, after whom he named his flute. His worship, native in Arcadia, extended thence over other parts of Greece, and after the battle of Marathon was introduced into Athens. In Rome he was honored under the names of Inuus and Faunus. The fir tree was sacred to him, and sacrifices were offered to him consisting of cows, rams, lambs, milk, and honey. The satyrs were his attendants.