Medusa part of their religion. Medusa was beheaded by the hero Perseus, who thereafter used her head, which retained its ability to turn onlookers to stone, as a weapon until he gave it to the goddess Athena to place on her shield. In classical antiquity the image of the head of Medusa appeared in the evil-averting device known as the "Gorgoneion". The three Gorgon sisters—Medusa, Stheno, and Euryale—were all children of the ancient marine deities Phorcys (or "Phorkys") and his sister Ceto (or "Keto"), chthonic monsters from an archaic world. Their genealogy is shared with other sisters, the Graeae, as in
Erebia euryale Erebia euryale Erebia euryale, the large ringlet, is a species of butterfly belonging to the family Nymphalidae. Subspecies include: This species is endemic to Europe. It can be found in southern Europe, in the Alps, Cantabrian, Pyrenees, Carpathians, Balkans, in northern Europe from Finland to the Urals and in Altai. "Erebia euryale" is an alpine species. It lives in spruce forest clearings, glades, slopes, subalpine meadows and damp meadows at an elevation of above sea level. "Erebia euryale" has a wingspan of 20–23 mm. These butterflies have a considerable geographic variation. Usually the upperside of the forewings is dark brown