Hispania Carthaginensis is a Roman province segregated from Hispania Tarraconensis in the new division of Hispania by emperor Diocletian in 298.The capital of the new province is settled in Carthago Nova, now Cartagena.It encompasses the southern part of the Mediterranean coast of Spain, except that belonging to Hispania Baetica: roughly speaking, the modern provinces of Valencia, Alicante and Murcia.