- W. M. Murray
Callipolis (also Callion), main city of the Aetolian tribe Callieis (a branch of the Ophiones), located in eastern *Aetolia on the upper Mournos river. Mentioned by *Thucydides (2) (3. 96. 3) in the 5th cent., the Callieis in the 4th cent. fortified their city, which prospered until it was attacked and destroyed by the Gauls (see Galatia) in 279 bce (Paus. 10. 22. 2–4). Excavations at modern Palaiokastro, near Velouchovo, have revealed clear evidence for the city's wealth and for its destruction. An interesting cache of clay seals from the destroyed archives attests to the diplomatic and business connections of Callipolis before its destruction.