(Ἐχεφυλλίδης), a grammarian or historian, who is mentioned by Stephanus of Byzantium (s. v. Σφακτηρία), and by the Scholiast on Plato's Phaedon (p. 389).
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890