Colchis

In classical antiquity and Greco-Roman geography, Colchis (; ) was an exonym for the Georgian polity of Egrisi () located on the eastern coast of the Black Sea, centered in present-day western Georgia also including the region of Abkhazia.

The Machelones () (Machelônes, Machelonoi; ) were a Colchian tribe located to the far south of the Phasis (modern-day Rioni River, western Georgia). There are several references to them in Classical sources. This group may be the Machorones of Pliny (NH 6.4.11) who placed them between the Ophis (modern Of, Turkey) and Prytanis rivers.

historic site in Imereti, Georgia

3rd-century school in Colchis, Georgia

Ancient Greek art

250px|thumb|Zydrites in a map of Colchis, Caucasian Iberia and Caucasian Albania by Henri Liébaux, 1729 The Zydretae () (Zudrêtai or Zudreitai) were an ancient people of Colchis recorded by the Classical accounts as dwelling on the coast of the Pontus Euxinus (Black Sea), on the southern side of the Apsarus river (modern-day Çoruh/Chorokhi in the borderlands of Turkey and Georgia), and between the Machelonoi and the Lazi tribes. The early 2nd century Roman author Arrian lists several neighboring and probably ethnically related tribes on a west to east orientation: the Sannoi (Sanigs), Drilae,