Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
Dissensions between Pompeius and Metellus as to Crete
A disagreeable interlude in the island of Crete, however,
disturbed in some measure this pleasing success of the Roman arms.
There Quintus Metellus was stationed in the second year of his command,
and was employed in finishing the subjugation-already substantially
effected--of the island,(2) when Pompeius appeared in the eastern
waters.
A collision was natural, for according to the Gabinian law
the command of Pompeius extended concurrently with that of Metellus
over the whole island, which stretched to a great length but was
nowhere more than ninety miles broad;(3) but Pompeius was considerate
enough not to assign it to any of his lieutenants.
3. [Literally "twenty German miles"; but the breadth of the island
does not seem in reality half so much.--Tr.]