Thapsis

Dictionary of Greek and Roman Geography

THAPSIS(Θάψις, Diod. 20.23), a deep river of the Chersonesus Taurica, on which lay a royal castle. Ukert (3.2. p. 193) identifies it with the Salgir. But Köhler seeks the castle on Mount Opuk, 45 wersts south of Kertsch. ( Mèm. de l'Ac. de St. Petersb. 9. p. 649, seq.)
[T.H.D]