3. Of Lacedaemon, is quoted by Fulgentius (Mythol. 1.1) as the author of a work on Antiquities, in fourteen books, and on the worship of the gods. Whether he is the same as the geographer, Diophantus, who wrote a description of the northern countries (Phot. Bibl. Cod. 250, p. 454b.), which is also quoted by Stephanus of Byzantium (s. v. Ἄβιοι), or the Diophantus who wrote a work πολιτικά (Steph. Byz. s. v. Λιβυστῖνοι), cannot be decided.
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