In Greek mythology, Hypnos, also spelled Hypnus, is the personification of sleep. The Roman equivalent is Somnus. His name is the origin of the word hypnosis. Pausanias wrote that Hypnos was the deare
Hypnos (left) and Thanatos (right) carry the body of Sarpedon while Hermes watches, Euphronios Krater, an Attic red-figure calyx-krater, c. 515–510 BC
Hypnos marble head (National Roman Museum, Rome)
Hypnos and Thanatos carrying the body of Sarpedon from the battlefield of Troy; detail from an Attic white-ground lekythos, ca. 440 BC.
Ariadne asleep at Hypnos's side. Detail of ancient fresco in Pompeii
In Greek mythology, Styx, also called the River Styx, is a goddess and one of the rivers of the Greek Underworld. Her parents were the Titans Oceanus and Tethys, and she was the wife of the Titan Pall
Thetis dips Achilles in Styx, 4th century relief, Museum of Ancient Eleutherna
Ferryman Charon embarks with the soul of the deceased. Fresco from an ancient Lucanian tomb.
Charon carries souls across the river Styx by Alexander Dmitrievich Litovchenko.
The waters of one possible source for the mythical Styx in the Aroanian mountains.