Lewis & Short

praedātrix, īcis, f. [praedator], she that plunders, pillages, robs (poet. and in post-class. prose): Herculei praedatrix cedat alumni, i. e. the nymph Dryope, who stole away Hylas, Stat. S. 1, 5, 22.
Adj.: bestia, a beast of prey, Amm. 26, 6, 10: fera, id. 14, 2, 1; 14, 10, 1.