Found under some fallen Yucca.
Xantusia v. vigilis. Caught this little guy running across some open gravel, which seemed mad. The zebra-tailed lizards have big longs legs for getting above the hot surfaces and running fast, but night lizards definitely do not.
Xantusia is one of three genera of night lizards (family Xantusiidae). Species of Xantusia are small to medium-sized, viviparous (live-bearing) lizards found in the U.S. southwest and in northern Mexico.