A marginal addition in ms A.
Though the headword is attested as -- apparently -- a proper name in Polyaenus 7.36, its appearance here is probably qua 'denizen of Mygdonia' (as in e.g. Lucian, On Sacrifices 10).
Stephanus of Byzantium s.v. Mygdonia recognizes two areas of this name, one in Macedon (N of Chalkidike) and one in Phrygia (S of the Propontis). A third, in Mesopotamia, is attested elsewhere.