- Alecto eschrichtii Müller, 1841 accepted as Heliometra glacialis (Owen, 1833 ex Leach MS)
- Alecto glacialis Owen, 1833 ex Leach MS accepted as Heliometra glacialis (Owen, 1833 ex Leach MS)
- Alecto petasus Düben & Koren, 1846 accepted as Antedon petasus (Düben & Koren, 1846)
- Alecto phalangium Müller, 1841 accepted as Leptometra phalangium (Müller, 1841)
- Bythocrinus intermedius AH Clark, 1915 accepted as Democrinus conifer (AH Clark, 1909)
- Eudiocrinus atlanticus Perrier, 1883 accepted as Pentametrocrinus atlanticus (Perrier, 1883)
- Zeuctocrinus gisleni AM Clark, 1973