(Δάπυξ), the chief of a tribe of the Getae. When Crassus was in Thrace, B. C. 29, Roles, another chief of the Getae, was at war with Dapyx, and called in the assistance of Crassus. Dapyx was defeated, and obliged to take refuge in a stronghold, where he was besieged. A Greek, who was in the place, betrayed it to Crassus, and as soon as the Getae perceived the treachery, they killed one another, that they might not fall into the hands of the Romans. Dapyx too ended his life on that day. (D. C. 51.26.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890