[MACER libro primo de officio praesidis. ] §1.18.1.prPraesidis nomen generale est eoque et proconsules et legati Caesaris et omnes prouincias regentes, licet senatores sint, praesides appellantur: proconsulis appellatio specialis est.
[MACER, from the first book On the Office of a Governor.] The name of "praeses" (governor) is general, and therefore both proconsuls and legates of Caesar and all who rule provinces, even though they may be senators, are called "praesides"; the designation of "proconsul" is specific.