The International Commission on Zoological Nomenclature has voted in favour of a revised version of the amendment to the International Code of Zoological Nomenclature that was proposed in 2008. The purpose of the amendment is to expand and refine the methods of publication allowed by the Code, particularly in relation to electronic publication. The amendment establishes an Official Register of Zoological Nomenclature (with ZooBank as its online version), allows electronic publication after 2011 under certain conditions, and disallows publication on optical discs after 2012. The requirements for electronic publications are that the work be registered in ZooBank before it is published, that the work itself state the date of publication and contain evidence that registration has occurred, and that the ZooBank registration state both the name of an electronic archive intended to preserve the work and the ISSN or ISBN associated with the work. Registration of new scientific names and nomenclatural acts is not required. The Commission has confirmed that ZooBank is ready to handle the requirements of the amendment.

The purpose of this application, under Article 81.1 of the Code, is to conserve current usage of ammonoid specific names that have been widely used by palaeontologists and stratigraphers for almost a century even though these names were established in a work placed on the Official Index of Rejected and Invalid Works in Zoological Nomenclature by Direction 32. This direction followed Opinion 132, in which the genus-group names (Gattungsbezeichnungen) established by Sobolew (1914a, 1914b) were considered to be formulae and not available generic names. However, Opinion 132 included no ruling on the specific names established in the same papers and some of these names have continued to be used in publications and databases. It is requested that the Commission reinstate the availability of Sobolew's species-group names published in the rejected work for the sake of nomenclatural stability. The spelling umbilifer Sobolew, 1914a is selected in this paper as the correct original spelling over umbiliferum under Article 24.2.3 of the Code.

The purpose of this application, under Article 23.9.3 of the Code, is to conserve the usage of the genus-group name Dodecatoma Westwood, 1849 for a group of beetles (family phengodidae or rhagophthalmidae) by suppressing the unused senior homonym Dodecatoma Dufour, 1841, which was proposed for a group of stoneflies (family perlidae).

The purpose of this application, under Articles 65.2.2 and 70.2 of the Code, is to conserve the usage of the widely used names Scarabaeus Linnaeus, 1758 for a dung roller beetle, scarabaeinae Latreille, 1802 for the dung beetles subfamily, Dynastes MacLeay, 1819 for the hercules beetles genus, and dynastinae MacLeay, 1819, for the rhinoceros beetles subfamily. The current usage of these names is threatened by the overlooked type species designation of Scarabaeus hercules Linnaeus, 1758 (currently Dynastes hercules) for Scarabaeus by Lamarck in Jolyclerc, 1807b. Lamarck's designation would transfer the name Scarabaeus from the widely known dung roller beetles to hercules beetles (currently Dynastes) and the family-group name scarabaeinae from the dung beetles to the rhinoceros beetles (currently dynastinae). lt is proposed to set aside all type species fixations for Scarabaeus before Hope's designation (1837) of Scarabaeus sacer Linnaeus, 1758, which would maintain the current usage of all names involved.

The purpose of this application, under Article 70.2 of the Code, is to conserve the current usage of the generic name Hemerodromia Meigen, 1822, for a well-established genus of empidid flies. The type species of Hemerodromia has long been assumed to be Tachydromia oratoria Fallén, 1815, designated by Rondani in 1856. However, an earlier type-species designation of Tachydromia mantispa Meigen in Panzer, 1806, which is currently recognized as a valid species of Phyllodromia Zettersedt, 1837, was made by Westwood in 1840. Additionally, one more type designation was found for Hemerodromia that is earlier than that of Rondani (1856): that by Blanchard in 1845 of Hemerodromia monostigma Meigen, 1822, which is currently recognized as a species of Chelifera Macquart, 1823. Acceptance of either of these earlier designations would threaten stability of nomenclature and taxonomy of the common and worldwide genus group taxon Hemerodromia Meigen, 1822. Acceptance of the Westwood designation would make Hemerodromia the senior synonym of Phyllodromia Zetterstedt, 1837. Acceptance of the Blanchard designation would make Hemerodromia a senior synonym of Chelifera Macquart, 1823. Either change would require species in Hemerodromia to be placed in the next available genus, Microdromia Bigot, 1857. To avoid the nomenclatural and taxonomic instability that would result from following the Principle of Priority, it is proposed that all type fixations for Hemerodromia Meigen, 1822 prior to that of Tachydromia oratoria Fallén, 1815 by Rondani (1856) be set aside.

The purpose of this application, under Article 23.9.3 of the Code, is to conserve the generic name Argyra Macquart, 1834 (Diptera, dolichopodidae), a widely distributed and well-established genus of dolichopodid flies. It is threatened by its infrequently used senior objective synonym, Porphyrops Meigen, 1824. It is proposed that Argyra Macquart, 1834 be conserved by suppressing Porphyrops Meigen, 1824 under the Commission plenary power, in the interest of nomenclatural stability.

The purpose of this application, under article 70.2 of the Code, is to conserve the current usage of the generic name Ocydromia Meigen, 1820 for a well-established genus of hybotid flies. The type species of Ocydromia has long been assumed to be Empis glabricula Fallén, 1816. However, the correct type species is Ocydromia ruficollis Meigen, 1820, which is currently treated in the genus Leptopeza Macquart, 1834. Acceptance of Ocydromia ruficollis Meigen, 1820 as the type species of Ocydromia would change the current concept of that genus to that of Leptopeza, and a new generic name would be required for the taxon currently called Ocydromia. To avoid the nomenclatural instability that would result from following the Principle of Priority, it is proposed that all type fixations for Ocydromia Meigen, 1820 prior to that of Empis glabricula Fallén, 1816 by Westwood (1840) be set aside.

The purpose of this application, under Article 75.5 of the Code, is to conserve the usage of the name Plateosaurus Meyer, 1837 (Upper Triassic, Germany), known from numerous articulated skeletons, several with complete skulls, from the Norian Plateosaurus bonebeds of Western Europe and Greenland. This was the first non-English, non-avian dinosaur and the second sauropodomorph and Triassic dinosaur to be named. It is proposed to replace the fragmentary and non-diagnostic bones that constitute the type material of Plateosaurus engelhardti Meyer, 1837, the type species of Plateosaurus Meyer, 1837, with a diagnostic neotype, an almost complete skull and skeleton (SMNS 13200). This specimen has formed the basis for the concept of P. engelhardti (the best represented basal sauropodomorph) and ultimately of Plateosaurus Meyer, 1837. Plateosaurus is the basis for plateosauridae Marsh, 1895 and Plateosauria Tornier, 1913.

The Commission has conserved the specific name Boccardia proboscidea Hartman, 1940 for a widely dispersed mudworm (family spionidae) from California by giving the name precedence over its rarely used senior subjective synonym Polydora californica Treadwell, 1914. The untypified name Spio californica Fewkes, 1889 has also been suppressed.

The Commission has conserved the widely used pseudoscorpion generic name Neobisium Chamberlin, 1930 by giving it precedence over the genus-group name Blothrus Schiödte, 1847, which has been used as a subgenus or synonym of Neobisium.

The Commission has conserved the family-group names athetini Casey, 1910 and geostibina Seevers, 1978 for a group of rove beetles by suppressing a little-used senior synonym callicerini Jakobson, 1908.

The Commission has conserved the current usage of the widely used sawfly genus name Trachelus Jurine, 1807 by giving it precedence over its senior synonym Astatus Panzer, [1801]. The ‘black grain stem sawfly’, Trachelus tabidus (Fabricius, 1775), is a pest of cereals in the southern West Palaearctic and in North America.

The Commission has conserved the current usage of the names Sturmia Robineau-Desvoidy, 1830, Senometopia Macquart, 1834 and Drino Robineau-Desvoidy, 1863 for three well-established genera of tachinid flies by setting aside all type fixations for Sturmia Robineau-Desvoidy, 1830 prior to that of Sturmia vanessae Robineau-Desvoidy, 1830 by Robineau-Desvoidy (1863), along with all type fixations for Senometopia Macquart, 1834 prior to that of Carcelia aurifrons Robineau-Desvoidy, 1830 by Townsend (1916).

The Commission has not supported the request to designate a neotype to conserve the usage of the name Mastodon waringi Holland, 1920, for a species of extinct South American proboscidean.

The original reference to the name Otiorhynchus Germar, 1822 on p. 151 is to be read as follows:

Otiorhynchus Germar, 1822, Fauna Insectorum Europae, vol. 7. 25 nrs. Impensis Car. Aug. Kümmelii, Halae, no. 12, unnumbered page on the back of the text sheet corresponding to Plate 12.