than the wind blown sand which has been mentioned for this species. The gravel may be from road fill - don't know. 597.3 11:52 at the canal at the W base of the large sand hills we head for Brawley driving faster than before 20-30 mph. S.B. Reff 1969 Journal 5 May6 Algedonous davis alga Imperial Co, CA. 599.7 12:00 AM DST, (1:00 AM scw Time) adult a Phrynosoma mcalli cloaca 40.8°C. Substratum 48.4°C. Air ½" above ground, cloud cover providing shade (no wind) 28.6-29.8°C. clouds provide 50% sky coverage. Scattered fluffy clouds. Breeze occasionally-feels cool. Animal facing sun. 604.2 Saw Leopard lizard beside the road on a large rock 12:30 PM. We looked around for it but did not see it when we stopped.