I wasn't referring to the Amieva amieva, or ridgerunner. I know that some people call them dwarf tegus, but you are right, they're not.
What I had, and what I was referring to is the Callopistes maculatus. They come from Chile and northern Argentina. They do look sort of similar, but are not the same.
If you have access to Barron's Reptiles, Amphibians, and Invertibrates, they have pictures of both on facing pages 148 and 149, so it is easy to compare. The Callopistes looks much more like a tegu, but sort of a high speed - low drag version. The head of the Amieva is quite different, and, to me, they don't look as much like a tegu.
It is sort of confusing, and I guess I should have given the Latin name to clarify. Sorry if I confused anyone. 
Leslie