Hades three-headed guard dog Cerberus. The Etruscan god Aita and the Roman gods Dis Pater and Orcus were eventually taken as equivalent to Hades and merged into Pluto, a Latinization of Plouton (", Ploútōn"), itself a euphemistic title often given to Hades. The origin of Hades' name is uncertain, but has generally been seen as meaning "the unseen one" since antiquity. An extensive section of Plato's dialogue "Cratylus" is devoted to the etymology of the god's name, in which Socrates is arguing for a folk etymology not from "unseen" but from "his knowledge ("eidenai") of all noble things". Modern linguists have
Tomb of Orcus name "Tomb of Orcus". The Italian name ("Tomba dell'Orco") can also mean "Tomb of the Ogre", and it is used that way in Italy today. The second tomb has never been fully excavated. Though most of the walls are muraled, the artists did not complete the ceiling. A scientific analysis in 2001 revealed that the paint used contained cinnabar, ochre, orpiment, calcite, copper, and Egyptian blue. While the artwork in Orcus I is highly praised (particularly the painting of Velia Velcha; see below), some of the artwork of Orcus II is considered poorly done. It is likely that the French