treasury.
*Praefectus annonae: official charged with the supervision of the grain supply to the city of Rome.

Military prefects

*Praefectus alae: commander of a cavalry unit.
*Praefectus castrorum: camp commandant.
*Praefectus cohortis: commander of a cohort (constituent unit of a legion, or analogous unit).
*Praefectus classis: