Temple of Artemis image carried through the streets and surrounded by maidens. In the Roman Imperial era, the emperor Commodus lent his name to the festival games, and might have sponsored them. From the Greek point of view, the Ephesian Artemis is a distinctive form of their goddess Artemis. In Greek cult and myth, Artemis is the twin of Apollo, a virgin huntress who supplanted the Titan Selene as goddess of the Moon. At Ephesus, a goddess whom the Greeks associated with Artemis was venerated in an archaic, pre-Hellenic cult image that was carved of wood (a "xoanon") and kept decorated with jewelry.
Iana (goddess) to "Dianium", referring to either a shrine or the Temple of Diana on the Aventine Hill. Diana is one of the Roman goddesses most often identified with the moon, but Usener thought Iana might be better identified with Juno Lucina. The Church Father Tertullian, however, calls Iana a "diva arquis", "goddess of arches" (Latin "arcus" or "arquus", "arch; rainbow"). The arch as a passageway or portal suggests Iana as the female counterpart of Janus, whose role as a "doorkeeper" includes functions pertaining to time and the heavens. Varro's contemporary Nigidius Figulus identified Janus with Apollo and Iana with Diana. W.H.