peculiar sacrifices among the ancients Romans, so named because they consisted of a pig, a sheep, and an ox. These were offered at the general lustration of the Roman people, which took place every five years. The Suovetaurilia, indeed, formed a part of every lustration, and the victims were carried around the thing to be purified, whether it was a city, a people, or a piece of land. The same sacrifices existed among the ancient Greeks, under the name of Trittva. A representation of the celebration of these sacrifices is found on the Triumphal Arch of Constantine at Rome. (See SACRIFICE).