title: HydroidesGunnerus, 1768 (Annelida, Serpulidae) is feminine: a nomenclatural checklist of updated names.
abstract: As a service to taxonomists and ecologists using names in the well-known and species-rich ship-fouling serpulid genusHydroideswe present an update of all 107 non-synonymised scientific names, with additional information onHydroidesnomenclature, original names, etymologies, and type localities derived from original literature, and in accord with the World Register of Marine Species (WoRMS) database. An update is needed because the gender of genusHydroideshas from 1 January 2000 reverted to the original feminine, due to a change in the wording of International Code of Zoological Nomenclature which was overlooked at that time, and is contrary to the usage in practice ofHydroidesas masculine which had started about 1992, although Code-required from the 1960s. We match 31 further original names of current WoRMS subjective junior synonyms to each non-synonymised name, and also report on the world distribution of the genus as illustrated by type localities of the valid names. We include notes on sevenspecies inquirenda. The correct rendering is given of six names that have been altered for gender agreement for the first time herein.Hydroides gottfriedinom. n.replaces junior homonymHydroides rostrataPillai, 1971. Currently there are 41 non-synonymised species-group names inHydroideswhich should be gender invariant, and 23 names which would only change if moved to a neuter genus; the remaining 43 names are fully gender variable. Place-names (23), and personal names (16) make up more than a third (36%) of the species names, with most of the remainder (68) being descriptive of species character states, usually of operculum morphology (54). All species, exceptHydroides norvegica(63°N), have type localities in shallow-water coastal locations in temperate to tropical waters below latitude 44°, with the highest number of new species (54) from the adjoining Western Pacific and Indian Ocean areas. The other concentration of new species (31) are those first found on the Pacific and Atlantic coasts of North America and in the Caribbean.
authors.affiliation: National Institute of Water and Atmospheric Research (NIWA), 301 Evans Bay Parade, Hataitai, Wellington 6021, New Zealand.
authors.forename: Geoffrey B
authors.initials: GB
authors.lastname: Read
authors.affiliation: Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, the Netherlands.
authors.forename: Harry A
authors.initials: HA
authors.lastname: Ten Hove
authors.affiliation: Australian Museum, 1 William Street, Sydney, NSW, 2010, Australia; Department of Biological Science, Macquarie University, Sydney, NSW, Australia.
authors.forename: Yanan
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Australian Museum, 1 William Street, Sydney, NSW, 2010, Australia; Department of Biological Science, Macquarie University, Sydney, NSW, Australia.
authors.forename: Elena K
authors.initials: EK
authors.lastname: Kupriyanova
keywords: Etymology; ICZN; gender agreement; geolocation; type locality