Thzese are the Sand lizards recorded from Marakele
Spotted Sandveld Lizard Nucras intertexta
Holub's Sandveld Lizard Nucras holubi
Spotted Sand Lizard Pedioplanis lineoocellata

Does not really look like one of these
Heliobolus lugubris is very variable, but adults look like this
http://www.google.de/imgres?sa=X&espv=2 ... ,s:0,i:122
http://www.google.de/imgres?sa=X&espv=2 ... ,s:0,i:128
And I don't trust any of the SANParks checklists
Would go for this one

or ask J. Marais
