Compares a member of the Tupinambis teguixin Group and a Salvator merianae.

The two species have been long confused in the literature. Both specimens were in the pet trade and are from unknown localities. Diagnostic characters are obvious. A. Tupinambis teguixin lacks granular scales separating the supraoculars from the ciliaries, it has a single loreal scale, and the head is slightly compressed (dorsoventrally). B. Salvator merianae has granular scales between the supraocualars and the cillaries, a divided loreal, and a deep head. Also note the tall and horizontally divided lower labials. Photographs by JCM.