49 Appius was in Rome in 38 as member of the Fratres Arvales (Smallwood, Documents no. 3, lines 14, 20, 29, 37; no. 4, lines 1, 8, 17, 23, 28, 34; no. 5, line 3); on 1 Jan. 39 he was present as ‘magister’ of the brotherhood (ib. no. 7, line 3), but does not appear again during Gaius’ reign, presumably because he had been sent to Spain. Galba with only one legion was to show the potential of Spain as a base in 68; in 42 Tarraconensis probably still had three, no doubt with an appropriate complement of auxiliaries, so that it dominated the neighbouring unarmed provinces. (Mommsen, , Ròm. Gesch. v8 [Berlin, 1919], 59–60;Google Scholar Dessau, Gesch. d. ròm. Kaiserzeit ii [Berlin, 1930], 451. Ritterling [RE XII. 1549–51], however, held it was Gaius, not Claudius, who moved IV Macedonica from Spain).