in this stady ,180 mole-vole specimens collected from west , central   , east and southeast iran were investigated by morphological,biometrical and karyological methods.According to our findings, 3different species,Ellobius fuscocapillus,Ellobius lutescens and Ellobius talpinus,are distributed in iran.karyologicalfindings showed that E.fuscocapillus has 2n=36    NF=56 , NFa=54 )E. lutescens has 2n=17 (NF=34 , NFa=32) and   Etalpinus, morphology ,karyology ,distribution.