They're very similar to Sceloporus undulatus, but show some marked differences from the Sceloporids in general, such as lacking femoral pores. However, they show fairly strong sexual dimorphism, particularly on the abdomenal surface. Male dorsal patterning tends to be much more profound, primarily from a darker ground colour. Unfortunately, my photos don't do them any justice as the faces on these guys have some really nice blue and orange tinges.