VOLUME 15. Triple-Part 34/36 2nd July 1958 pp. 1093—1188 THE BULLETIN OF ZOOLOGICAL NOMENCLATURE The Official Organ of THE INTERNATIONAL COMMISSION ON ZOOLOGICAL NOMENCLATURE Edited by FRANCIS HEMMING, C.M.G., C.B.E. Secretary to the International Commission on Zoological Nomenclature CONTENTS Fifteenth Instalment of the London Congress Agenda Paper (continued inside back wrapper) LONDON: Printed by Order of the International Trust for Zoological Nomenclature and Sold on behalf of the International Commission on Zoological Nomenclature by the International Trust at its Publications/Office, 41, Queen's Gate, London, S.W.7 1958 Price Three Pounds (All rights reserved) Original from and digitized by National University of Singapore Libraries INTERNATIONAL COMMISSION ON ZOOLOGICAL NOMENCLATURE A. The Officers of the Commission Honorary Life President: Dr. Karl Jordan (British Museum (Natural History), Zoological Museum, Tring, Herts, England) President: Professor James Chester Bradley (Cornell University, Ithaca, N.Y., U.S.A.) (12th August 1953) Vice-President: Senhor Dr. Afranio do Amahal (Sao Paulo, Brazil) (12th August 1953) Secretary : Mr. Francis Hemming (London, England) (27th July 1948) B. The Members of the Commission (Arranged in order of precedence by reference to date of election or of most recent re-election, as prescribed by the International Congress of Zoology) Professor H. Boschma (Rijksmuseum van Natuurlijke Historic, Leiden, The Netherlands) (1st January 1947) Senor Dr. Angel Cabrera (La Plata, Argentina) (27th July 1948) Mr. Francis Hemming (London, England) (27th July 1948) (Secretary) Dr. Henning Lemche (Universitetets Zoologislce Museum, Copenhagen, Denmark) (27th July 1948) Professor Pierre Bonnet (Universite de Toulouse, France) (9th June 1950) Mr. Norman Denbigh Riley (British Museum (Natural History), London) (9th June 1950) Professor Dr. Tadeusz Jaczewski (Institute of Zoology, Polish Academy of Sciences, Warsaw, Poland) (15th June 1950) Professor Dr. Robert Mertens (Natur Museum u. Forschungs-Institut Senckenberg, Frankfurt a. M., Germany) (5th July 1950) Professor Dr. Erich Martin Hering (Zoologisches Museum der Humboldt- Universitat zu Berlin, Germany) (5th July 1950) Senhor Dr. Afranio do Amaral (S. Paulo, Brazil) (12th August 1953) (Vice-President) Professor J. R. Dymond (University of Toronto, Toronto, Canada) (12th August 1953) Professor J. Chester Bradley (Cornell University, Ithaca, N.Y., U.S.A.) (12th August 1953) (President) Professor Harold E. Vokes (University of Tulane, Department of Geology, New Orleans, Louisiana, U.S.A.) (12th August 1953) Professor Bela Hanko (Mezogazdasagi Museum, Budapest, Hungary) (12th August 1953) Dr. Norman R. Stoll (Rockefeller Institute for Medical Research, New York, N.Y., U.S.A.) (12th August 1953) Mr. P. C. Sylvester-Bradley (Sheffield University, Sheffield, England) (12th August 1953) Dr. L. B. Holthuis (Rijksmuseum van Natuurlijke Ilistorie, Leiden, The Netherlands) (12th August 1953) Dr. K. H. L. Key (Commonwealth Scientific and Industrial Research Organisation, Canberra, A.G.T., Australia) (15th October 1954) Dr. Alden H. Miller (Museum of Vertebrate Zoology, University of California, Berkeley, California, U.S.A.) (29th October 1954) Doc. Dr. Ferdinand Prantl (Ndrodni Museum v Praze, Prague, Czechoslovakia) (30th October 1954) Professor Dr. Wilhelm Ktjhnelt (Zoologisches Institut der Universitat, Vienna, Austria) (6th November 1954) Professor F. S. Bodenreimer (The Hebrew University, Jerusalem, Israel) (11th November 1954) Professor Ernst Mayr (Museum of Comparative Zoology at Harvard College, Cambridge, Massa¬ chusetts, U.S.A.) (4th December 1954) Professor Enrico Tortonese (Museo di Storia Naturale " G. Doria ", Genova, Italy) (16th December 1954) Dr. Per Brinok (Lunds Universitets, Zoologiska Institution, Lund, Sweden) (19th May 1958) Original from and digitized by National University of Singapore Libraries BULLETIN OF ZOOLOGICAL NOMENCLATURE Volume 15, Triple Part 34/36 (pp. 1093-1188) 2nd July 1958 CASE No. 63 DRAFT " REGLES ARTICLE 24 : THE QUESTION OF HOMONYMY BETWEEN NAMES AT DIFFERENT TAXONOMIC LEVELS DOCUMENT 63/1 (Commission Reference : Z.N.(S.) 1361) By R. V. MELVILLE (Assistant Secretary, International Commission on Zoological Nomenclature) Professor J. Chester Bradley's draft English text of the Rules, Article 24, deals with the question of homonymy between names in the same group, that is with homonymy between specific and subspecific names within a single nominal genus, between generic and subgeneric names, and between names within the Family-group, or within the Order/Class-group or within the Phylum- group as the case may be. Brief reference is also made, in Section 7 of the Article, to the question of homonymy between names at different levels, as when, for example, a generic name and a name in the Order/Class-group are found to consist of identical words. 2. The question of homonymy between names at different taxonomic levels was considered by the Thirteenth International Congress of Zoology at Paris in 1948 (Bull. zool. Nomencl. 4 : 164) in connection with Opinion 102 and with special reference to the ordinal name Siphonophora Eschscholtz, 1829 and the generic name Siphonophora Koch, 1855. The Congress then ruled " that words should be inserted in the Ragles to make it clear that the Law of Homonymy does not apply as between generic or trivial names on the one hand and the names of units belonging to categories above the family level on the other, and therefore, that, where such a name consists of a word which has already been used as the name of a unit of sub-ordinal or higher category that name is not to be rejected as an invalid homonym ". The purport of this ruling is incorporated in Article 24, section 7 of the draft English text. The Paris Congress added a Recommendation " deprecating the selection as generic uuu Original from and digitized by National University of Singapore Libraries 1094 Bulletin of Zoological Nomenclature or trivial names of words previously published as the names of units of sub- ordinal or higher category ". This Recommendation is incorporated in Article 10, Recommendation 9(/3) (for generic names) and 15 (for specific names) of the draft English text (Bull, 14 : 81-82). 3. No mention was made by the Paris Congress, nor is any to be found in Professor Bradley's draft, of possible homonymy between names in the Pamily-group on the one hand and names at lower levels on the other except in so far as the use of names terminating in -idae and -inae was prohibited in all groups except in families and sub-famihes respectively. This is the only provision at present in the Regies (although omitted from Professor Bradley's draft) which prescribes standard terminations for taxa of particular categories while prohibiting the use of those terminations for any other category. This provision must certainly be re-examined by the London Colloquium in the light of the Copenhagen Decision to include subtribes, tribes and superfamilies1 in the Family-group of taxa, for since there is no scheme of prescribed terminations for these categories, so there is no provision dealing with homonymy between the names of taxa in these categories and generic and specific names. 4. Instances of homonymy between names in the Family-group and generic names were brought to the notice of the Commission by Mr. D. E. Kimmins (British Museum (Natural History), London) in two letters dated 12th May 1954 and 11th July 1956. In the first of these letters Mr. Kimmins raised the question of the use of unchanged generic names to designate " Sections " of the Family ebhemebidae by Eaton in 1883-1888 (Trans. Linn. Soc. [2] Zool. (3)). According to Mr. Kimmins, the Family ephemebidae as understood by Eaton was equivalent to the modern Order Ephemeroptera, and his " Sections " had acquired general acceptance as subfamilies or families, with correctly formed names and with authorship and date as from Eaton's use of the unchanged generic names to designate " Sections ". The Copenhagen Congress decided (Copenhagen Decisions : 36, Decision 33(1)) that " a Family- group name was to be accepted as acquiring availability and as ranking for priority from the date of its original publication, irrespective of whether it was then published with one of the terminations now prescribed or currently accepted, provided that it is clear that the term concerned was used to denote a suprageneric category and was not employed merely as a plural noun or adjective ". Mr. Kimmins asked whether this rule would cover cases of Family group names published with no termination added to the stem of the name of the type-genus, as with Eaton's name for " Sections ". While it seems unlikely that this contingency was envisaged by the Copenhagen Collouium, it seems clear that such a conclusion is not expressly excluded, and that a case can be made out for the establishment of current practice in the order Ephemeroptera in the interests of stability of nomenclature. 1 The question of the transfer of the superfamily category frcm the family-group to the Order/Class-group is discussed in Document 59/1 see p. 1035 above. Original from and digitized by National University of Singapore Libraries Bulletin of Zoological Nomenclature 1095 5. In his second letter, Mr. Kimmins drew attention to the homonymy existing between the generic name Lestoidea Tillyard, 1913, and a superfamily name based on the generic name Lestes, Leach, 1815, which, if formed in accordance with the practice prevailing