Ochus

OCHUS(ὁ Ὦχος, Strab. 11. p. 509; Ptol. 6.11. § § 2, 4; Ammian. 23.6), a river of Central Asia, which has been attributed to the provinces of Hyrcania and Bactriana by Strabo and Ptolemy respectively, as flowing through them both. It took its rise on the NW. side of the Paropamisus (or Hindú—Kúsh), and flowed in a NW. direction through part of Bactriana towards the Caspian Sea, arid parallel with the Oxus. Pliny makes it a river of Bactriana, and states that it and the Oxus flow from opposite sides of the same mountain (6.16.18). There can be no reason for doubting that it is represented by the present Tedjen. It is clear that in this part of Asia all Ptolemy's places are thrown too much to the east by an error in longitude. (Wilson, Ariana, p. 145.)
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