(Δικέτας), a Theban, was sent by his countrymen to Q. Marcius Philippus and the other Roman commissioners at Chalcis (B. C. 171) to excuse the conduct of their state in having allied itself with Perseus. He went reluctantly, as being still an adherent to the Macedonian cause, for which he was accused at Chalcis, together with Neon and Ismenias, by the Theban exiles of the Roman party. Ismenias and he were thrown into prison, and there put an end to their own lives. (Plb. 27.1, 2; Liv. 42.38, 43, 44.)