Note 164 — Chapter XXII
Reading edition
Both Shaw and Bruce identified Hydra with the ancient Thunodronum; but Sir Grenville Temple is certainly correct. He recognised it as the Ammædara of Ptolemy, the Admedera of the Itinerary, and the Ad Medera of the Tables of Peutinger, twenty-five miles north-east of Tebessa. The word Ammædara has since been found in inscriptions on the spot.