The Tellaro (Latin: Helorus or Elorus, Greek: or ) is a river in the southeast of Sicily, the most considerable which occurs between Syracuse and Cape Pachynum. It is long, and has a drainage basin of . It rises in the hills between Palazzolo (ancient Acrae) and Giarratana, and flows at first to the south, then turns eastward, and enters the sea about south of Syracuse. Near its mouth stood the town of the same name. In the upper part of its course it is a mountain stream, flowing over a rugged and rocky bed, whence Silius Italicus calls it undae clamosus Helorus (xiv. 269); but near its mouth it becomes almost perfectly stagnant, and liable to frequent inundations. Hence Virgil justly speaks of praepingue solum stagnantis Helori (Aen. iii. 698). Ovid praises the beauty of the valley through which it flows, which he terms Helornia Tempe (Fast. iv. 476). Several ancient authors mention that the stagnant pools at the mouth of the river abounded in fish, which were said to be so tame that they would eat out of the hand, in the same manner as was afterwards not uncommon in the fishponds of the Romans. (Apollodorus of Athens ap. Steph. Byz. v. ; Athenaeus, viii. p. 331; Plin. xxxii. 2. s. 7.) It was on the banks of the Helorus, at a spot called the precise locality of which cannot be determined, that the Syracusans were defeated by Hippocrates, tyrant of Gela, in a great battle. (Herod. vii. 154; Pind. Nem. ix. 95; and Schol. ad loc.) References Drainage basins of the Ionian Sea Rivers of Italy Rivers of Sicily Rivers of the Province of Ragusa Rivers of the Province of Syracuse