CRIOBOLIUM, the sacrifice of a ram in the cult of Attis and the Great Mother (Gr. Kptof36Xtov). Perhaps it was a cere mony instituted after the rise, and on the analogy of the tauro bolium (q.v.), which it probably resembled, but was in honour of Attis, for when it was performed in conjunction with the tauro bolium, the altar was almost invariably inscribed to both the Mother and Attis, while the inscription was to the Mother alone when the taurobolium only was performed. It was sometimes performed alone (Corp. Inscr. Lat. vi. 505, 506).