A certain Bacasis was appointed to govern it, whether as satrap or as tributary monarch is not apparent; while the Parthian king, recalled towards home by a revolt, proceeded to crush rebellion before resuming his career of conquest.
The revolt which now occupied for a time the attention of Mithridates was that of Hyrcania.

The Hyrcanians were Arians in race; they were brave and high-spirited, and under the Persian monarchs had enjoyed some exceptional privileges which placed them above the great mass of the conquered nations.

It was natural that they should dislike the yoke of a Turanian people; and it was wise of them to make their effort to obtain their freedom before Parthia grew into a power against which revolt would be utterly hopeless.

Hyrcania might now expect to be joined by the Medes, and even the Mardi, who were Arians like themselves, and could not yet have forgotten the pleasures of independence.

But though the effort does not seem to have been ill-timed, it was unsuccessful.