• Phialidium Leuckart, 1856 accepted as Clytia Lamouroux, 1812
• Phialidium (Phialucium) Maas, 1905 accepted as Phialucium Maas, 1905
• Phialidium bicophorum (L. Agassiz, 1862) accepted as Clytia hemisphaerica (Linnaeus, 1767)
• Phialidium brunescens (Bigelow, 1904) accepted as Clytia brunescens (Bigelow, 1904)
• Phialidium chengshanense (Ling, 1937) accepted as Sugiura chengshanense (Ling, 1937)
• Phialidium cruciferum Annandale, 1915 accepted as Clytia crucifera (Annandale, 1915)
• Phialidium discoida (Mayer, 1900) accepted as Clytia discoida (Mayer, 1900)
• Phialidium discoideum (Mayer, 1900) accepted as Clytia discoida (Mayer, 1900)
• Phialidium folleatum (McCrady, 1859) accepted as Clytia folleata (McCrady, 1859)
• Phialidium gelatinosum (Mayer, 1900) accepted as Clytia gelatinosa (Mayer, 1900)
• Phialidium globosum (Mayer, 1900) accepted as Clytia globosa (Mayer, 1900)
• Phialidium gregarium (Agassiz, 1862) accepted as Clytia gregaria (Agassiz, 1862)
• Phialidium hemisphaericum (Linnaeus, 1767) accepted as Clytia hemisphaerica (Linnaeus, 1767)
• Phialidium iridescens Maas, 1906 accepted as Clytia iridescens (Maas, 1906)
• Phialidium islandicum Kramp, 1919 accepted as Clytia islandica (Kramp, 1919)
• Phialidium kincaidi (Nutting, 1899) accepted as Clytia kincaidi (Nutting, 1899)
• Phialidium languidum (A. Agassiz, 1862) accepted as Clytia languida (A. Agassiz, 1862) accepted as Clytia hemisphaerica (Linnaeus, 1767)
• Phialidium lomae Torrey, 1909 accepted as Clytia lomae (Torrey, 1909)
• Phialidium maccreadyi (Brooks, 1888) accepted as Phialidium mccradyi (Brooks, 1888) accepted as Clytia mccradyi (Brooks, 1888)
• Phialidium malayense Kramp, 1961 accepted as Clytia malayense (Kramp, 1961)
• Phialidium mccradyi (Brooks, 1888) accepted as Clytia mccradyi (Brooks, 1888)
• Phialidium minutum (Nutting, 1901) accepted as Clytia hemisphaerica (Linnaeus, 1767)
• Phialidium noliforme (McCrady, 1859) accepted as Clytia noliformis (McCrady, 1859) sensu Calder, 1991
• Phialidium ovale (Mayer, 1900) accepted as Multioralis ovalis Mayer, 1900
• Phialidium ovalis (Mayer, 1910) accepted as Multioralis ovalis Mayer, 1900
• Phialidium pentata (Mayer, 1900) accepted as Pseudoclytia pentata Mayer, 1900 accepted as Clytia folleata (McCrady, 1859)
• Phialidium simplex Browne, 1902 accepted as Clytia simplex (Browne, 1902)
• Phialidium simplex Uchidai, 1947 accepted as Clytia uchidai (Kramp, 1961)
• Phialidium singulare (Mayer, 1900) accepted as Clytia singulare (Mayer, 1900)
• Phialidium temporarium Browne, 1896 (uncertain > taxon inquirendum)
• Phialidium tenue Browne, 1905 accepted as Eirene tenuis (Browne, 1905)
• Phialidium uchidai Kramp, 1961 accepted as Clytia uchidai (Kramp, 1961)
• Phialidium uchodai Kramp, 1961 accepted as Phialidium uchidai Kramp, 1961 accepted as Clytia uchidai (Kramp, 1961)
• Phialidium variabile (Claus, 1864) accepted as Clytia hemisphaerica (Linnaeus, 1767)
• Phialidium viridicans Leuckart, 1856 accepted as Clytia viridicans (Leuckart, 1956) accepted as Clytia hemisphaerica (Linnaeus, 1767)