Bulletin of Zoological Nomenclature 19 OPINION 763 STENORHYNCHVS LAMARCK, 1818 (CRUSTACEA, DECAPODA): VALIDATED UNDER THE PLENARY POWERS WITH DESIGNATION OF CANCER SETICORNIS HERBST, 1788. AS TYPE-SPECIES RULING. ? (I) Under the plenary powers: (a) the generic name Pactolus Leach, 1815, is hereby suppressed for the purposes of the Law of Priority but not for those of the Law of Homonymy; (b) all designations of type-species for the nominal genus Stenorhynchus Lamarck, 1818, made prior to the present Ruling, are hereby set aside and the nominal species Cancer seticornis Herbst, 1788, is hereby designated to be the type-species of that genus; (c) the emendation to Stenorhynchus of the generic name Stenorynchus Lamarck, 1 818, is hereby validated; (d) it is hereby directed that the family-group name inachinae McLeay, 1838, is not to be rejected in favour of the name macropodiinae Samouelle, 1819, by any zoologist who considers that the genera Macropodia [Leach, 1814] and Inachus Weber, 1795, belong to the same family-group taxon. (2) The following generic names are hereby placed on the Official List of Generic Names in Zoology with the Name Numbers specified: (a) Inachus Weber, 1795 (gender : masculine), type-species, by designation by H. Milne Edwards, 1837, Cancer scorpio Fabricius, 1779 (Name No. 1698); (b) Macropodia [Leach, 1814] (gender : feminine), type-species, by mono-typy, Cancer longirostris Fabricius, 1775 (Name No. 1699); (c) Stenorhynchus (emend, under the plenary powers of Stenorynchus) Lamarck, 1818 (gender : masculine), type-species, by designation under the plenary powers in (l)(b) above, Cancer seticornis Herbst, 1788 (Name No. 1700). (3) The following specific names are hereby placed on the Official List of Specific Names in Zoology with the Name Numbers specified: (a) debilis S. L Smith, 1871, as published in the binomen Leptopodia debilis (Name No. 2121); (b) dorsettensis Pennant, 1777, as published in the binomen Cancer dorsettensis (Name No. 2122); (c) longirostris Fabricius, 1775, as published in the binomen Cancer longi-rostris (type-species of Macropodia [Leach, 1814]) (Name No. 2123). (d) phalangium Fabricius, 1775, as published in the binomen Cancer phalangium (Name No. 2124); (e) rostratus Linnaeus, 1761, as published in the binomen Cancer rostratus (Name No. 2125); (f) seticornis Herbst, 1788, as published in the binomen Cancer seticornis (type-species oi Stenorhynchus Lamarck, 1818) (Name No. 2126). Bull. zooi. Nomencl., Vol. 23, Part 1. April 1966.