HELIADAE, in Mythology, the daughters of the Sun and Clymenus, according to the poets. They were so afflicted, as they say, with the death of their brother Phaeton, that the gods, moved with compassion, transformed them into poplars on the banks of the river Eridanus.

HELLÆA, in Grecian antiquity, was the greatest and most frequented court in Athens for the trial of civil affairs. See HELIASTÆ.