Bull. Zool. Nomencl. 46(1): 83-84. Mar. 1989.

–Pursuant to the petitions of Domning (1987b), Halitherium is deemed to be the correct original spelling of Halytherium; the holotype of Pugmeodon schinzii is designated as the neotype of Halianassa studeri; P. schinzii is designated as the type species of Halitherium; Halitherium and (Pugmeodon) schinzii are placed on the Official Lists of Names in Zoology; and Halianassa, Halytherium, and (Halianassa) studeri are placed on the Official Indexes of Rejected and Invalid Names. The main outcome of these actions is that the name Halianassa studeri is fixed as an objective junior synonym of the Oligocene species Halitherium schinzii, and Halianassa and H. studeri are thereby made unavailable for application to the Miocene specimens for which they have most often been used.