Common Earless Lizard
Lesser Earless Lizard
Holbrookia maculata
Photo taken at Vulture Peak, south of Wickenburg on Oct 6, 2002
From Wikipedia: The speckled earless lizard is an overall gray-brown in color, with black and white speckling all along its back, with a solid gray-brown underside. It has distinct black and white bars immediately preceding the hind legs. Males tend to have a blue coloration to the white bars, whereas females do not. Like all species of earless lizards, it has no external ear openings.