(Ἀθάνας), a Greek historical writer, the author of a work on Sicily, quoted by Plutarch (Plut. Tim. 23, 37) and Diodorus. (xv. 94.) He is probably the same with Athanis, a writer mentioned by Athenaeus (iii. p. 98), who also wrote a work on Sicily. (Göller, de Situ, &c. Syracusarwtn, p. 16.)
[C.P.M]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