was a centurion under Trajan, and praefectus praetorio under Hadrian, who erected a statue
to his honour. Dio Cassius says that Similis received the praefecture against his will, and
that he with difficulty prevailed upon Hadrian to let him resign it; but Spartianus on the
contrary states, that Hadrian removed Similis from his office, although he was partly indebted
to him for the empire, and appointed Septicius Clarus his successor. (Hadr. 9.)