The Longanus (also Longanos or Loitanus) was a river in north-eastern Sicily on the Mylaean plain and was, as recorded by Polybius, the location at which the Mamertines were drastically defeated by Hiero II of Syracuse in around 269 BC. The small settlement of Longane was positioned near it. The river was considered so important that was represented as a God in the coins. Some archeologists identify it with the river that arises in the valley of Fondachelli-Fantina town called Patrì or Fantina.
the huge bed of the Patrì river is a reason because it is considered the true Longanus River
the bronze kerykeion exposed at the British Museum is the only object known that Longanus has given back apart the coin