(Βίθυς), or BITHYS, the son of Cotys, king of Thrace, who was sent by his father as a hostage to Perseus, king of Macedonia. On the conquest of the latter by Aemilius Paullus in B. C. 168, Bitis fell into the hands of the Romans, and was taken to Rome, where he adorned the triumph of Paullus in 167. After the triumph, he was sent to Carseoli, but was shortly afterwards restored to his father, who sent an embassy to Rome to solicit his liberation. (Zonar. 9.24; Liv. 45.42; Plb. 30.12.)