Cnemidophorus is a genus of lizards which belong to the family of Teiidae, which are commonly referred to as whiptail lizards or racerunners. Note that the nomenclature for this genus has recently been re-examined by T. W. Reeder et al. in 2002. Many species that were Cnemidophorus should now likely be considered Aspidoscelis based upon divergent ... Found on http://en.wikipedia.org/wiki/Cnemidophorus