HYLAS, in Greek legend, son of Theiodamas, king of the Dryopians in Thessaly, the favourite of Heracles and his companion on the Argonautic expedition.
ARGONAUTS ('Apyovavrat, the sailors of the "Argo"), in Greek legend a band of heroes who took part in the Argonautic expedition under the command of Jason, to fetch the golden fleece.
In the Argonautic legend, his abode was the island of Drepane (Apoll.
In the Argonautic expedition, after the death of Tiphys, helmsman of the "Argo," he took his place.
He destroyed sundry sea-monsters, set free the bound Prometheus, took part in the Argonautic voyage and the Calydonian boar hunt, made war against Augeas, and against Nestor and the Pylians, and restored Tyndareus to the sovereignty of Lacedaemon.