Production and decay of an isotope271110 of the 110th element were studied. The isotope was produced by208Pb +64Ni →271110 + n reaction. Fourteen &agr;‐decay chains have been assigned to be the decays originating from the isotope271110. The excitation function of the production cross section was measured. The results have provided a good confirmation of production and decay of the271110 reported by GSI group. The presence of an isomeric state in271110 has also been confirmed. Possible isomeric state in267Hs has also been presented. The production and decay of272111 has been also investigated in irradiations of209Bi targets with64Ni beam. We have observed 14 &agr;‐decay chains in total, that can be assigned, on the basis of their time correlations, to subsequent decays from272111. © 2004 American Institute of Physics