AK Pearson 1964 soft sand desert where we had found geckos earlier. Before to very long we all had spotted geckos in our flashlight light. The one I spotted "froze" while I kept the spot on him. He make a short dash when I briefly lowered the beam, but after that he stood very still while he and I waited for the rest of us to come take temperatures, etc. Maybe 5-10 minutes of waiting. July 5, 1964 4 km ENE Pucusa, Dept. Lima, Peru Most of the traps had been rolled up but, one one that had been under a pepper tree had been carried off into the tree - spring. No mice in my line, although OP caught 2 + Ray caught 1. On the way back nothing in the Shermans. On the way back from the trap line I excavated a somewhat large burrow opening in a small area of soft sand on top of the hard pan. A lizard (Tropidurus?) ran out a back hole and is in our collection. He seemed cold to the touch. Subsequently I noticed other similar holes - large main hole, one or more side holes, not necessarily open. I excavated several, and the tunnels seem to be about 2 ft long from front to back door. They are also deeper than the tunnels in which we have found geckos. Maybe 8-10". Drove up the valley a little way on the left had fork to an abandoned chapel. It