Lewis & Short

Aufĭdēna, ae, f., = Αὐφίδηνα, a town in Samnium, on the river Sagrus, now Alfidena, Liv 10, 12 fin.
Aufĭdēnātes, ium, m., its inhabitants, Plin. 3, 12, 17, § 107; cf. Mann. Ital. I p. 801.