Iana (goddess) Roscher includes Iana among the "indigitamenta", the list of deities maintained by Roman priests to assure that the correct divinity was invoked for rituals. Iana (goddess) Iana is the name of an ancient Roman goddess associated with arches and the moon, usually identified as either a form of Diana or the female counterpart of Janus. Varro (1st century BC) uses the name in his agricultural treatise, in a passage of dialogue in which the interlocutors explain that some farming tasks should be done when the moon is waxing, while the waning phase facilitates others, such as harvesting, shearing sheep, and
Luna (goddess) "Carmen Saeculare", performed in 17 BC, Horace invokes her as the "two-horned queen of the stars" ("siderum regina bicornis"), bidding her to listen to the girls singing as Apollo listens to the boys. Varro categorized Luna and Sol among the visible gods, as distinguished from invisible gods such as Neptune, and deified mortals such as Hercules. She was one of the deities Macrobius proposed as the secret tutelary of Rome. In Imperial cult, Sol and Luna can represent the extent of Roman rule over the world, with the aim of guaranteeing peace. Luna's Greek counterpart was Selene. In Roman art