Rejection of the species Methanothrix soehngeniiVP and the genus MethanothrixVP as nomina confusa, and transfer of Methanothrix thermophilaVP to the genus MethanosaetaVP as Methanosaeta thermophila comb. nov. Request for an Opinion Boone, David R. and Kamagata, Yoichi,, 48, 1079-1080 (1998), doi = https://doi.org/10.1099/00207713-48-3-1079, publicationName = Microbiology Society, issn = 1466-5026, abstract= We request an Opinion of the Judicial Commission regarding rejection of the species Methanothrix soehngenii VPHuser, Wuhrmann and Zehnder 1983, 439, and the genus Methanothrix VPHuser, Wuhrmann and Zehnder 1983, 439, as nomina confusa because their descriptions were based on the characterization of an impure type strain, strain OpfikonT. We also propose the transfer of Methanothrix thermophila VP Kamagata et al. 1992, 465, to the genus Methanosaeta as Methanosaeta thermophila comb. nov., language=, type=