174 BulletinofZoologicalNomenclature50(2)June1993 OPINION 1727 Schizopus Le Conte, 1858 (Insecta, Coleoptera): placed on the Official List ofGeneric Names Ruling (1) ThenameSchizopusLeConte, [April] 1858 (gender: masculine), typespecies bymonotypySchizopuslaetusLeConte,1858,isherebyplacedontheOfficialListof GenericNamesinZoology. (2) ThenamelaetusLeConte, 1858,aspublishedinthebinomenSchizopuslaetus (specificnameofthetypespeciesofSchizopusLeConte, 1858),isherebyplacedon theOfficial ListofSpecificNamesinZoology. (3) The name Schizopus Claparede & Lachmann, [December] 1858 is hereby placedontheOfficialIndexofRejectedandInvalidGenericNamesinZoology(a juniorhomonymofSchizopusLeConte,[April] 1858). HistoryofCase2773 An application for the conservation ofSchizopus Le Conte, 1858 was received from ProfG.H. Nelson (College ofOsteopathic Medicine ofthe Pacific. Pomona. California. U.S.A.)on 14May1990.Aftercorrespondencethecasewaspublishedin BZN 48: 305-307 (December 1991). Notice ofthe case was sent to appropriate journals. Comments by Prof L.B. Holthuis (Nationaal Natuurhistorisch Museum. Leiden. TheNetherlands)andDrV. Mahnert(Museumd'HistoireNaturelle. Geneve, Switzerland), published in BZN 49: 232-233 (September 1992), gave the dates of publicationofthe(1858)worksbyLeConteandClaparede&LachmannasApril and Decemberrespectively. ItwasnotedonthevotingpaperthatsinceSchizopusLeContewasthepriorname therewasnoneedforCommissionactiontoconserveit.Proposal(4)(1)onBZN48: 305-306 was therefore withdrawn. The Commission was asked only to place Schizopus,andthenameofitstypespeciesS. laetus,bothofLeConte([April] 1858), on appropriate Official Lists, and Schizopus Claparede & Lachmann, [December] 1858(ajuniorhomonym)on theOfficialIndex. Useoftheplenarypowerswasnot requiredandasimplemajorityvotewouldsuffice. DecisionoftheCommission On 1 December1992themembersoftheCommissionwereinvitedtovoteonthe proposalspublishedinBZN48:306,withproposal(4)(1)withdrawn,asnotedabove. Atthecloseofthev—otingperiodon 1 March 1993thevoteswereasfollows: Affirmative votes 26: Bayer, Bock, Bouchet, Cocks, Cogger, Corliss, Dupuis, Hahn, Halvorsen, Holthuis, Kabata, Kraus, Macpherson, Mahnert, Martins de Souza, Minelli, Nielsen, Nye, Ride, Savage, Schuster, Starobogatov, Thompson, Trjapitzin, Ueno,—Willink Negativevotes 2: HeppellandStys. Lehtinenabstained. Heppell, Lehtinen and Stys commented that, in their view, there was no need to place the senior homonym Schizopus Le Conte on the Official List. (Editorial BulletinofZoologicalNomenclature50(2)June1993 175 note. Thisisthemosteffectivewayofrecordingthe factswhichcametohght asa resultofthesubmissionofthecasetotheCommission). Originalreferences ThefollowingaretheoriginalreferencestothenamesplacedonOfficialListsandanOfficial IndexbytherulinggiveninthepresentOpinion: laetus,Schizopus, LeConte,[April] 1858,ProceedingsoftheAcademyofNaturalSciencesof Philadelphia,1858;70. SchizopusClaparede&Lachmann,[December]1858,MemoiresdeI'InstilutNationalGenevois. 5: 182. Schizopus Le Conte, [April] 1858, Proceedings of the Academy of Natural Sciences of Philadelphia, 1858:70.