Mustela arizonensis Oct. 1-1932-Camp Tundry-20 miles N5.E. Peratullo-Barnett Co. 3do. 6300ft. One specimen # 696, was taken under rather unusual circumstances. It was caught in a meadles [illegible] trap. Two traps had been painted in either direction in a gopher run about 1 inches below the surface of the ground. The set had been left over night, and when examined, one trap held a gopher and the other this weasel. From the position of the animal in the trap it appeared that he had entered the underground run at some other point and was caught as to approached the opening I had made. This is good evidence that the weasels are operating as natural enemies of pocket gophers.