Murray 1948 Phrynosoma coronatum Apr 29 20± mi 55E El Arco, Baja California. The lead truck saw one on or by the road which then entered a brush. Here I found it trying to hide beneath the branches. Chased it to the other side where it rapidly dug into the soft sand and dried leaves, seeming to melt out of sight. The area was very sandy, with thick growth of many cactuses, yucca, cardons, cirios, copales and brush.