POPLIFUGIA. – A festival on July 5 in the most ancient Roman calendar, the only one that preceded the Nones by a month.
Separated by the narrowest interval from the Nonae Caprotinae, it appears to form with these a small organic cycle: this is also evident from the etiological legend of the two festivals, according to which the first commemorates the flight of the Romans in the battle against the Fidenaeans, while the second instead marks their final victory. A more important fact is that the Nonae Caprotinae are a festival of Juno, whereas the P. are defined as *feriae* of Jupiter. Another etiological legend traces the festival back to the disappearance of Romulus. Nothing is known of the rites of the festival: only the name itself would suggest a ritual flight.