(Πόσσις), a Greek writer, mentioned only by Athenaeus, who cites two of his works, namely, the third book of his history of the Amazons (Ἀμαζονίς, vii. p. 296d.), and the third book of his history of Magnesia (Μαγνητικά, xii. p. 533d.).
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