AEMO´NA, HAEMO´NA, EMO´NA (Μωνα, Ἥμωνα, Orelli, Inscript. 72; Ἠμᾶ, Herodian. 8.1: Eth. Aemonensis: Laybach), a strongly fortified town with a well-frequented market in Pannonia, situated on the river Saave and on the road from Aquileia to Celeia, answering to the modern Laybach, the capital of Illyria. Laybach, however, as the Roman remains around its walls attest, does not equal in extent the ancient Aemona. According to tradition, the Argonauts were the founders of Aemona (Zosim. 5.29). It subsequently became a Roman colony with the title of Julia Augusta (Plin. Nat. 4.21.28), and its name occurs on coins and inscriptions (Ptol. 2.15.7; Orelli, Inscript. nos. 71, 72, et alib.).
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