According to Plutarch (Sert. 7.1–2) and Sallust (Hist. 1.83–4), a certain P. Calpurnius Lanarius killed L. Livius Salinator, a member of Sertorius’ staff in charge of military operations in the Pyrenees, in the early stages of the Sertorian War (82–72 b.c.). Through the analysis of the verb δολοφονέω in Plutarch's and St. Jerome's use of Sallust's Histories, this article seeks to demonstrate that Lanarius was an exile of the Sullan regime who treacherously assassinated his superior Salinator. The article puts forward the suggestion—not hitherto considered—that Lanarius was one of those proscribed.