AE´GIDA a town of Istria, mentioned only by Pliny (Plin. Nat. 3.19. s. 23), which appears to have been in his time a place of little importance; but from an inscription cited by Cluverius ( Ital. p. 210) it appears that it was restored by the emperor Justin II. who bestowed on it the name of JUSTINOPOLIS.This inscription is preserved at Capo d'Istria, now a considerable town, situated on a small island joined to the mainland by a causeway, which appears to have been termed AEGIDIS INSULA,and was probably the site of the Aegida of Pliny.
[E.H.B]