Heem, H. 1980 28 November 7 Km S. Motupe, Cerrada Vieja, Tarataque Prov., Peru arrived here x 0915, already hot & sunny. As we walked up to the dead cows at the S. base of the Cerro I spooked a ? Dicodon guttulatum which Mark missed (killed and preserved at 1330). Saw 6-8 other Dicodon, all in open sand among boulders initially, though they moved through thickets when chased. They are very fast! Saw one large one chase a less bright smaller one x 30m, including 2-3 turns. Saw numerous Tropidurus, including an immature T. occipitalis on a bresquite out in the flats where we parked. At 0945 Mark saw a much larger (x 2 ft), black or gray & yellow spotted lizard, and I subsequently heard it (?) twice near the mouth of a burrow. As we approached this area at 1045 I saw a movement in a pile of cactus below the boulders and there it was - an average adult Callopistes flavipunctatus. It crawled a meter up to a ledge under a boulder, turned, out- stretched, and paused about 10 sec. then moved up the slope, out of sight, toward the previous burrow.