Echinaster oculatus forma minor Düben & Koren, 1846 – synonym of Henricia sanguinolenta
Echinaster sarsi J. Müller & troschel, 1844 – synonym of Henricia sanguinolenta
Echinaster scrobiculatus Danielssen and Koren, 1887 – synonym of Henricia sanguinolenta
Echinocardium ovatum Gray, 1825 – synonym of Echinocardium flavescens
Echinocardium sebae, Gray, 18?? – synonym of Echinocardium cordatum
Echinocyamus angulosus Leske, 1778 – synonym of Echinocyamus pusillus
Echinocyamus minutus Gmelin, 1790 – synonym of Echinocyamus pusillus
Echinocyamus parthenopaeus Costa, 1869 – synonym of Echinocyamus pusillus
Echinocyamus speciosus Costa, 1869 – synonym of Echinocyamus pusillus
Echinus aurantiacus de Blainville, 1825 – synonym of Echinus esculentus
Echinus cantaber Lambert and Thiéry, 1??? – synonym of Echinus acutus
Echinus cordatus Pennant, 1777 – synonym of Echinocardium cordatum
Echinus flemingii Forbes, 1841 – synonym of Echinus acutus
Echinus globiformis de Lamarck, 1801 – synonym of Echinus esculentus
Echinus granularis Sars, 1826 – synonym of Strongylocentrotus droebachiensis
Echinus miliaris P.L.S. Müller, 1766 – synonym of Psammechinus miliaris
Echinus neglectus de Lamarck, 1816 – synonym of Strongylocentrotus droebachiensis
Echinus pseudomelo de Blainville, 1825 – synonym of Echinus esculentus
Echinus quinqueangulatus de Blainville, 1825 – synonym of Echinus esculentus
Echinus quinqueangulosus de Blainville, 1825 – synonym of Echinus esculentus
Echinus sardicus Delle Chiaje, 1841 – synonym of Echinus acutus
Echinus schwartzii Nilsson & Holst, 1817 – synonym of Echinus esculentus
Echinus sphaera O.F. Müller, 1776 – synonym of Echinus esculentus
Echinus subangulosus de Blainville, 1826 – synonym of Echinus esculentus
Echinus violaceus de Blainville, 1825 – synonym of Echinus esculentus
Echinus wallisi A. Agassiz, 1883 – synonym of Echinus elegans