Murray 1948 Cnemidophorus tesselatus tesselatus April Punta San Felipe, 50 ft., Baja California Hunted for three hours through the desert region northwest of camp - an encelia, creosote, ocotillo and copal association in either sandy or small rock terrain. Here the whiptails were very common and I saw more than 15 in that length of time. Their reactions seemed to me hardly typical of a desert lizard. Though they are capable of considerable speed, and would run rapidly for a short distance, they preferred to walk with undulating movements toward the nearest bush, then wait to see if they were being chased before entering. Then they advanced in short gliding spurts, bobbing their heads as they did so. Once in the bush, I could practically trample on them before they would leave - often circling around and around. Then a short rush to another bush and the same thing repeated. After this had gone on for a while they usually disappeared down a hole, many of which were available at all times. Found two up in the rough talue rocks on a hillside with only a little creosote for vegetation. Distance from the sand about 50 feet.