<P> By 395 AD, the praetors' responsibilities had been reduced to a purely municipal role . Their sole duty was to manage the spending of money on the exhibition of games or on public works . However, with the decline of the other traditional Roman offices such as that of tribune the praetorship remained an important portal through which aristocrats could gain access to either the Western or Eastern Senates . The Praetorship was a costly position to hold as praetors were expected to possess a treasury from which they could draw funds for their municipal duties . </P> <P> Like many other Roman institutions, the praetor (Greek: πραίτωρ, praitōr) survived in the Eastern Roman (Byzantine) Empire . </P> <P> Emperor Justinian I (r . 527--565) undertook a major administrative reform beginning in 535, which involved the reunification of civil and military authority in the hands of the governor in certain provinces, and the abolition of the dioceses . The Diocese of Thrace had already been abolished by the end of the 5th century by Anastasius, and its vicarius became the new praetor Justinianus of Thrace, with authority over all the former Thracian provinces except for Lower Moesia and Scythia Minor, which became part of the quaestura exercitus . Similarly, the governors of Pisidia and Lycaonia, as well as Paphlagonia (enlarged by merging it with Honorias) were upgraded to praetores Justiniani, and received the rank of vir spectabilis . In addition, in Constantinople he replaced the praefectus vigilum, who was hitherto responsible for security, by a praetor populi (in Greek πραίτωρ (τῶν) δήμων, praitōr (tōn) dēmōn), with wide - ranging police powers . </P> <P> In the early 9th century, the praitōr was a junior administrative official in the themata, subordinate to the governing stratēgos . Gradually however, the civil functionaries assumed greater power, and by the late 10th century, the praitores (or kritai, "judges") were placed at the head of the civil administration of a thema . This division of civil and military duties was often abandoned in the 12th century, when the posts of civil praitōr and military doux were frequently held in tandem . The provincial post fell out of use after the collapse of the Empire in 1204 . </P>

List two kinds of roman magistrates and the jobs they did