The M,-morphology of seven isolated populations of voles displaying a pitymyan rhombus from the Eastern Alps (including the probably extinct Microtus bavaricus) was compared with that of M. multiplex, M. liechtensteini, and M. tatricus as well as among each other, by using discriminant and canonical discriminant analyses. The genera! morphometry of the M, and the analysis of the Mj parameters show these populations to be related to M. liechtensteini and multiplex, more closely to liechtensteini but not in complete accordance with comparative liechtensteini-material from Slovenia and Croatia. The seven samples show a remarkable variation between each other that cannot be associated with their respective geographic provenance. They can be classified into three groups, one consisting of M. bavaricus only, one of true liechtensteini (Carinlhia and Eastern Tyrol) and a third represented by a sample of the upper Enns valley in Styria, characterized by a very aberrant M, morphology. Naturhistorisches Museum, P.O. Box 417, A-1014 Wien, Austria (PS, KB); Biogéo- sciences UMR CNRS 5561 et Laboratoire de Paléobiodiversité et Préhistoire de l'EPHE, Centre des sciences de la Terre, Université de Bourgogne, 6 Bd Gabriel, F 21000 Dijon, France (PB-L); Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Slawkowska 17, PL 31-016 Kraktiw, Poland (AN)
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