one of the conspirators against Q. Cassius Longinus, praetor of Hispania Ulterior, B. C. 48. Munatius Flaccus commenced the attack upon Cassius Longinus by killing one of the lictors and wounding the legate, Q. Cassius. Like all the persons involved in that conspiracy, Flaccus was not a Roman, but an Italian. (Hirt. Bell. Alex.