What is "scopasis"

Scopasis or Skôpasis was a Scythian king of the tribe Sauromatae. He commanded one of the three divisions of his countrymen, when Scythia was invaded by Darius I of Persia. It was the body under the command of Scopasis, which, arriving at the Istros (Danube) river, before Darius reached it in his retreat, endeavoured, though without success, to prevail on the Ionians to destroy the bridge of boats over the river, and thus ensure the destruction of the Persians.