The International Commission on Zoological Nomenclature has conserved the names Iberolacerta and Darevskia for two genera of lacertid lizards by confirming their availability from Arribas (1999). The microfiche publication (Arribas, 1997) is confirmed as unavailable and placed on the Official Index of Rejected and Invalid Works in Zoological Nomenclature. The name CaucasilacertaHarris, Arnold & Thomas, 1998 is confirmed as a nomen nudum and placed on the Official Index of Rejected and Invalid Generic Names in Zoology.