In 377 Meletius was in exile, and Paulinus the bishop of the “old Catholics,” or Eustathians (Soc., H.E. iv. 2, v. 5) opposing Vitalius, who was consecrated to the episcopate by Apollinaris.  On the confusion resulting from these three nominally orthodox claimants, vide Jerome’s Letter xvi. in this series, p. 20.