Halimedon mulleri Sars, 1892 – synonym of Westwoodilla caecula
Halimedon parvimanus Norman, 1889 – synonym of Westwoodilla caecula
Halirages borealis Boeck, 1871 – synonym of Apherusa cirrus
Haploops carinata Liljeborg, 1856 – synonym of Haploops tubicola
Haploops spinosa Shoemaker, 1931 – synonym of Haploops tubicola
Haplostylus normani (G.O. Sars, 1877) – synonym of Gastrosaccus normani
Harpina crenulata Boeck, 1871 – synonym of Harpinia crenulata
Harpinia neglecta Sars, 1891 – synonym of Harpinia antennaria
Hellaria coalita Norman, 1886 – synonym of Guernea coalita
Hemicythere concinna Sars, 1925 – synonym of Elofsonella concinna
Hemimysis pontica Czerniavsky, 1882 – synonym of Hemimysis lamornae
Henopomus muticus Krøer, 1847 – synonym of Janira maculosa
Heteropanope tridentata De Man, 1892 – synonym of Rhithropanopeus harrisii
Heterotanais gurneyi Norman, 1906 – synonym of Heterotanais oerstedi
Heterotanais oerstedti – synonym of Heterotanais oerstedi
Heterotanais ¸rstedi Sars, 1882 – synonym of Heterotanais oerstedi
Hippa dentata Fabricius, 1793 – synonym of Corystes cassivelaunus
Hippa scutellata Fabricius, 1793 – synonym of Thia scutellata
Hippomedon holbolli Boeck, 1871 – synonym of Hippomedon denticulatus
Homalo cuvieri: Risso, 1827 – synonym of Paromola cuvieri
Hoplonyx cicada Sars, 1891 – synonym of Tmetonyx cicada
Hyale lubbockiana Stebbing, 1876 – synonym of Hyale pontica
Hyale nilssoni Stebbing, 1876 – synonym of Hyale prevosti
Hyale nilssoni var. stebbingi Chevreux, 1910 – synonym of Hyale stebbingi
Hyale prevostii Stebbing, 1906 – synonym of Hyale prevosti
Hyas araneus var. hoeki Birula, 1897 – synonym of Hyas araneus
Hyas bufonius White, 1847 – synonym of Hyas coarctatus
Hyas latifrons Stimpson, 1857 – synonym of Hyas coarctatus
Hyas serratus Hailstone, 1835 – synonym of Hyas coarctatus
Hyperia latreille Milne-Edwards – synonym of Hyperia galba
Hyperia medusarum Muller, 1776 – synonym of Hyperia galba
Hyperia spinigera Bovallius, 1889 – synonym of Hyperia galba
Hyppolite gaimardii H. Milne-Edwards, 1837 – synonym of Eualus gaimardii
Hyppolite gordoni Bate, 1858 – synonym of Caridion gordoni
Hyppolyte cranchi Leach, 1817 – synonym of Thoralus cranchii