The Longanus (also Longanos or Loitanus) was a river in north-eastern Sicily on the Mylaean plain. As recorded by Polybius, it was where the Mamertines were drastically defeated by Hiero II of Syracuse in around 269 BC.[1] The small settlement of Longane was near it. The river was considered so important that it was represented as a God in coins.[2] Some archeologists identify it with the river that arises in the valley of Fondachelli-Fantina town called Patrì or Fantina.[3]