The taxonomy of the sand boaG. colubrinus(L. 1758) and applications of multivariate modelling to the periodic processes that occur within populations of this species will be discussed in the next paper of this series (TOKAR 1996). Here a taxonomic revision of the two remaining species of genusGongylophis (conicusandmuelleri) is presented. It is believed that both are monotypic species. The paper has a key and a brief description of all threeGongylophisspecies.