The purpose of this application, under Articles 29 and 55.3 of the Code, is to emend the spelling of the family-group name amphiporidae Rukhin, 1938 (Porifera, Stromatoporata, Amphiporida), a junior homonym of amphiporidae McIntosh, 1873 (Nemertea, Hoplonemertea) thereby removing the homonymy between the two names. It is proposed that the stem of the generic name Amphipora Schulz, 1883, on which the stromatoporoid name is based, be emended to Amphiporato give amphiporaidae, while leaving the nemertean family-group name (based on Amphiporus Ehrenberg, 1831) unchanged.

The purpose of this application, under Article 75.6 of the Code, is to conserve the current usage of the name Helix atlantica Morelet & Drouët, 1857 (currently Oxychilus ( Drouetia) atlanticus) for a species of pulmonate gastropod by designating a neotype. The syntypes of this species housed in the Natural History Museum, London are not in taxonomic accord with the prevailing usage. Originally H. atlantica was said to occur in most islands of the archipelago of the Azores, but later this name was uniformly used for specimens from São Miguel Island only, while the syntypes are from Santa Maria Island. We request the Commission use its plenary power to set aside the existing name-bearing types and to designate a neotype from São Miguel Island, to conserve the prevailing usage and concept of the species.

The purpose of this application, under Articles 29 and 55 of the Code, is to remove the homonymy between the family-group names chilodontidae Macalister, 1876 (type genus Chilodon Ehrenberg, 1834 [Ciliophora]), chilodontinae, an emendation of chilodinae Eigenmann, 1910 (type genus Chilodus Müller & Troschel, 1844 [Pisces]), and chilodontinae Wenz, 1938 (type genus Chilodonta Étallon, 1859 [Gastropoda]). It is proposed to place the unused name chilodontidae Macalister, 1876 on the Official Index; to place the name chilodontinae Eigenmann, 1910, as emended by Fowler (1950), on the Official List; and that the stem of the generic name Chilodonta Étallon, 1859 be deemed to be Chilodonta-, such that the name chilodontinae Wenz, 1938 is emended to chilodontainae Wenz, 1938.

The purpose of this application, under Article 23.9.5 of the Code, is to conserve the specific name Pleurotoma scabriuscula Brugnone, 1862 (currently Mangelia scabriuscula, conidae) originally published as Pleurotoma scabriusculum, a junior primary homonym of Pleurotoma scabriuscula Edwards, 1861 (currently Crassispira scabriuscula, turridae). Both names are in use, even though the latter is infrequently reported in the literature, and they have not been considered congeneric since 1899 and are unlikely ever to be treated as congeneric again. We propose that the name Pleurotoma scabriuscula Brugnone, 1862 (which does not have junior synonyms) be conserved by ruling that it is not invalid by reason of being a junior primary homonym.

The purpose of this application, under Article 23.9.3 of the Code, is to conserve the generic name Sematura Dalman, 1825 (Lepidoptera, sematuridae) which is well-established for a small number of moths widespread in the Neotropical region. Because it is also the type genus of the small family sematuridae, it is usually cited or illustrated in general works on Lepidoptera and insects in the region. The name is threatened by its rarely used senior subjective synonym, Mania Hübner, 1821, which dropped out of use because it was incorrectly considered to be an unavailable homonym. It is proposed that Sematura Dalman be given precedence over Mania Hübner under the plenary power of the Commission, in the interest of nomenclatural stability.

The purpose of this application, under Article 23.9.3 of the Code, is to conserve the name Papilio hesperus Westwood, 1843 (Lepidoptera, papilionidae) for a well-known species of butterfly. In 1995 it was proposed to ask the Commission to suppress Papilio hesperus Fabricius, 1793 (Lepidoptera, nymphalidae) in order to conserve Papilio hesperus Westwood, 1843 (Lepidoptera, papilionidae), but a formal application was never made. The senior name has not otherwise been used except as a junior synonym of Papilio daedalus Fabricius, 1775, or in inconclusive discussions, for 200 years or more. Accepting its seniority would be very disruptive to taxonomic stability of butterfly names in much of the African rainforest zone. The suppression of Papilio hesperus Fabricius, 1793 for the purposes of both the Principle of Homonymy and the Principle of Priority would coincidentally also serve to conserve the name Harma chalcis C. & R. Felder, 1860, which is in widespread use in much of Africa in the combination Euryphura chalcis.

The purpose of this application, under Article 78.1 of the Code, is to conserve the usage of the specific names Anguis lumbricalis Linnaeus, 1758 and Anguis jamaicensis Shaw, 1802 for two species of blind snake from the Caribbean. As published both taxa were composite and the name A. jamaicensis was a replacement for A. lumbricalis. The name Typhlops lumbricalis has consistently been used for a species from Cuba, Isla de Juventud and Bahamas, and T. jamaicensis is used for a species from Jamaica. A neotype is designated for T. lumbricalis and it is proposed that a neotype be designated for T. jamaicensis in accord with accustomed usage. Typhlops lumbricalis is the type species of Typhlops Oppel, 1811, a genus with a distribution in Europe, Africa, Asia, Central and South America and some 140 species.

The Commission has conserved the specific name of the dung beetle Onthophagus rugulosus Harold, 1886 (Coleoptera: scarabaeidae), a widespread species from East Asia, by suppressing the senior secondary homonym Elytridium rugulosum Heer, 1870, a fragmentary fossil from the Miocene of Spitsbergen, Norway, that was transferred to Onthophagus in 1977. A replacement name, O. spitsbergeniensis nom. nov., has been provided for the dubious fossil species.

The Commission has conserved the use of the well known alpine leaf beetle name Oreina elongata (Suffrian, 1851), originally published as Chrysomela elongata, and thus a junior primary homonym of Chrysomela elongata Linnaeus, 1758, currently known as Tillus elongatus (Linnaeus, 1758).

The combination Papilio danae Fabricius, 1775 (Lepidoptera, pieridae) has been conserved by suppression of the primary homonym Papilio danae Hufnagel, 1766. The current combination Colotis danae is well-established as the valid name for a common and widespread butterfly with many subspecies in Africa, Arabia, and Asia.

The Commission has conserved the widely used sawfly generic name Pachynematus Konow, 1890 by giving it precedence over a rarely used name Epitactus Förster, 1854, whenever the two are considered to be synonyms. Sawflies in this genus are of economic significance as pests of cereal and grass-fodder crops in North America, Europe and China.

The Commission has set aside Retepora angulata Hall, 1852 and Retepora angulata Hall as applied by Foerste, 1887 as type species of the Palaeozoic bryozoan genus Phylloporina Ulrich in Foerste, 1887 and replaced them with Retepora trentonensis Nicholson, 1875.

The Commission has conserved the widely used specific name nummifer Reuss, 1834 for an eastern Mediterranean colubrine snake originally published within Coluber Linnaeus, 1758 and currently referred to the genus Hemorrhois Boie, 1826, by suppressing the putative senior synonym Coluber tyria Linnaeus, 1758.

The Commission has set aside all previous type fixations for the nominal species Archaeopteryx lithographica von Meyer, 1861 and designated a feathered specimen (BMNH 37001) in the Natural History Museum, London as the neotype. The holotype (a feather impression) was not identifiable to species and could belong to any taxon of fossil birds recognised from the Solnhofen limestone.

The Commission has conserved the generic names Anthochaera Vigors & Horsfield, 1827 and Philesturnus Geoffroy Saint-Hilaire, 1832 for Australian wattled honeyeaters (meliphagidae) and the New Zealand saddleback (callaeidae) by suppression of the generic name Creadion Vieillot, 1816.

The Commission has ruled to conserve the widely accepted spelling Aplonis Gould, 18 October 1836 for the Indo-Australasian glossy starlings (sturnidae) by suppression of the prior but little-used spelling Aplornis Gould, [1 or 3 October] 1836.