Annelidabase. Uchida's 2004 new taxon names are unavailable names as there is no deposition information, contrary to Article 16. No holotype specimen-lot identifiers are given, and no indication of where specimens might be held. Annelidabase formerly followed Villalobos-Guerrero & Harris (2012) who treated Uchida's Ophiodromus new names as available, but they are not from 2004. Uchida et al 2019 published them again to make them available. Other Uchida names are reported, but regarded as unavailable A key to Japanese Ophiodromus is given.
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From introduction: "In the present account 17 genera and more than 50 species will be described. Japanese Hesionids with less than 7 pairs of tentacular cirri are described here as Part I of the report. The Hesionids with 8 pairs of tentacular cirri will be reported as Part II."