. Bulletin of zoological nomenclature. 192 Bulletin of Zoological Nomenclature 4. These old non-binominal works constitute a permanent threat to stability in nomenclature until they have been formally ruled to be invalid by the International Commission. In accordance with the principle recom- mended by the Fourteenth International Congress of Zoology, Copenhagen, 1953 (Copenhagen Decisions zool. nomencl. : 23-24, Decision 23) I recommend the International Commission on Zoological Nomenclature (1) to give a ruling that in the work entitled "Die Naturgeschichte der Versteinerungen zur Erlau


. Bulletin of zoological nomenclature. 192 Bulletin of Zoological Nomenclature 4. These old non-binominal works constitute a permanent threat to stability in nomenclature until they have been formally ruled to be invalid by the International Commission. In accordance with the principle recom- mended by the Fourteenth International Congress of Zoology, Copenhagen, 1953 (Copenhagen Decisions zool. nomencl. : 23-24, Decision 23) I recommend the International Commission on Zoological Nomenclature (1) to give a ruling that in the work entitled "Die Naturgeschichte der Versteinerungen zur Erlauterung der Knorrischen Sammlung von Merk-wiirdigkeiten der Natur ", pubhshed at Niirnberg in the period 1768-1774, Walch () did not apply the principles of binominal nomenclature as required by Article 25 of the Regies, and therefore that no name acquired the status of availability by reason of being pubhshed in this work ; (2) to place the title of the foregoing work on the Official Index of Rejected and Invalid Works in Zoological Nomenclature. rx. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original International Commission on Zoological Nomenclature. London


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