(Διοκλείδης), of Abdera, is mentioned in Athenaeus (for this seems to be the meaning of the passage) as having admirably described the famous engine called Ἑλέπολις (the City-taker), which was made by Epimachus the Athenian for Demetrius Poliorcetes at the siege of Rhodes. (Ath. v. p. 206d.; Diod. 20.91; Wesseling, ad loc.; Plut. Demetr. 21; Vitr. 10.22.)
[E.E]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