‘Tiberium Neronem et Claudium Drusum priuignos imperatoriis nominibus auxit [sc. Augustus]’’, i.e. honoured them with salutations as ‘imperatores’’. So I took it in my commentary (Cambridge, 1972), supposing argument needless. I must now defend my view against R. Syme, Historia antiqua, Commentationes Louanienses in honorem W. Peremans (Louvain, 1977), p.239. Syme asserts ‘Avoiding a technical term, he [Tacitus] describes the stepsons of the Princeps as invested with imperatoriis nominibus (3.1). That is, a grant of imperium proconsular (after the campaigns of 11 B.C.).’’ He adds in a footnote ‘As emerges clearly from Dio 54.33.5 (Drusus), cf. 34.4 (Tiberius). The matter must be stated firmly, since both Koestermann and Goodyear are totally inadequate.’’ Let me make amends.