or THARRYTAS (Ἀρρίβας, Ἄρρυβας, Ἀρύυβας, or Θαρρύτας), a descendant cf Achilles, and one of the early kings of the Molossians in Epeirus. When he came to the possession of the throne, he was yet very young, and being the last surviving member of the royal family, his education was conducted with great care, and he was sent to Athens with this view. On his return he displayed so much wisdom that he won the affection and admiration of his people. He flamed for them a code of laws, and established a regular constitution, with a senate and annual magistrates. The accounts of this king cannot, of course, be received as historical, and he must be looked upon as one of the mythical ancestors of the royal house of the Molossians, to whom they ascribed the foundation of their political institutions. (Justin, 17.3; Plut. Pyrrh. 1; Paus. 1.11.1.) The grandfather of Pyrrhus also bore the name of Arymbas. (Diod. 16.72.)