 The national characteristics of the Hirpini cannot be separated from those of other Samnites.It is not always easy to separate the confines of the Hirpini from those of neighbouring Samnite tribes, especially in the Imperial period, when the original distinctions of the tribes were mostly obliterated.Pliny's list of towns in the second region of Italy is more than usually obscure, and those of the Hirpini and Apulia confused in a most perplexing manner.