in Mythology, the son of Faunus and the nymph Symethis, was a beautiful shepherd of Sicily, who being beloved by Galatea, Polyphemus the giant was so enraged, that he crushed his rival with a rock; and his blood, gushing forth from under the rock, was metamorphosed into the river bearing his name. Ovid. Met. xiii. 750., Sil. Ital. xiv. 221. This river, now Fiume di Jaci, or Acque Grandi, rises under a bed of lava, on the eastern base of Etna, and passing Aci Reale, after a rapid course of one mile, falls into the sea. The waters of the stream, once celebrated for their purity, are now sulphureous.—Cluverii Sicil.; Brydone's Sicily; Smyth's Sicily.