• [non-Uristidae] albinus (K.H. Barnard, 1932)
• [non-Uristidae] dawsoni Hurley, 1963
• [non-Uristidae] georgianus (Schellenberg, 1931)
• [non-Uristidae] natalensis K.H. Barnard, 1916
• [unassigned] Mitromorphidae levania (Duclos, 1848) (uncertain > taxon inquirendum)
• [unassigned] Mitromorphidae linigera (Duclos, 1846) (uncertain > taxon inquirendum)
• “Montereina” achroma (Á. Valdés, 2001) represented as Discodoris achroma Á. Valdés, 2001
• “Montereina” aliciae (Dayrat, 2005) (unaccepted)
• “Montereina” aurea (Eliot, 1903) represented as Peltodoris aurea Eliot, 1904
• “Montereina” aurila (Marcus & Marcus, 1967) represented as Diaulula aurila (Marcus & Marcus, 1967)
• “Montereina” branneri (MacFarland, 1909) represented as Discodoris branneri MacFarland, 1909
• “Montereina” coerulescens (Bergh, 1888) represented as Discodoris coerulescens Bergh, 1888
• “Montereina” concinna (Alder & Hancock, 1864) represented as Discodoris concinna (Alder & Hancock, 1864)
• “Montereina” crucis (Mörch, 1863) represented as Discodoris crucis (Mörch, 1863)
• “Montereina” erubescens (Bergh, 1884) represented as Discodoris erubescens Bergh, 1884
• “Montereina” flindersi (Burn, 1962) represented as Anisodoris flindersi Burn, 1962 accepted as Diaulula flindersi (Burn, 1962)
• “Montereina” golaia (Marcus & Marcus, 1966) represented as Discodoris golaia Ev. Marcus & Er. Marcus, 1966
• “Montereina” greeleyi (MacFarland, 1909) represented as Diaulula greeleyi (MacFarland, 1909)
• “Montereina” igla (Marcus & Marcus, 1967) represented as Peltodoris hummelincki igla Marcus & Marcus, 1967
• “Montereina” labifera (Abraham, 1877) represented as Discodoris labifera (Abraham, 1877)
• “Montereina” lancei (Millen & Bertsch, 2000) represented as Peltodoris lancei Millen & Bertsch, 2000
• “Montereina” lentiginosa (Millen, 1982) represented as Diaulula lentiginosa (Millen, 1982) accepted as Peltodoris lentiginosa (Millen, 1982)
• “Montereina” lippa (Á. Valdés, 2001) represented as Peltodoris lippa Á. Valdés, 2001
• “Montereina” modesta (Bergh, 1877) represented as Discodoris modesta Bergh, 1877
• “Montereina” mortenseni (Ev. Marcus & Er. Marcus, 1963) represented as Discodoris mortenseni Ev. Marcus & Er. Marcus, 1963
• “Montereina” muta (Bergh, 1877) represented as Discodoris muta Bergh, 1877
• “Montereina” notha (Bergh, 1877) represented as Discodoris notha Bergh, 1877
• “Montereina” opisthidia (Bergh, 1877) represented as Discodoris opisthidia Bergh, 1877
• “Montereina” pallida (Baba, 1937) represented as Discodoris pallida Baba, 1937
• “Montereina” pardalis (Alder & Hancock, 1864) represented as Discodoris pardalis (Alder & Hancock, 1864)
• “Montereina” paroa (Burn, 1969) represented as Discodoris paroa Burn, 1969
• “Montereina” phoca (Ev. Marcus & Er. Marcus, 1967) represented as Diaulula phoca (Ev. Marcus & Er. Marcus, 1967)
• “Montereina” punctifera (Abraham, 1877) represented as Peltodoris punctifera (Abraham, 1877)
• “Montereina” purcina (Ev. Marcus & Er. Marcus, 1967) represented as Discodoris purcina Ev. Marcus & Er. Marcus, 1967
• “Montereina” rubra (Bergh, 1905) represented as Peltodoris rubra (Bergh, 1905)
• ×Acostitrapa hemiptera (Borbás) Rauschert accepted as Centaurea hemiptera Borbás
• ×Acostitrapa pseudohemiptera (Wagner) Rauschert accepted as Centaurea pseudohemiptera J.Wagner
• ×Acostitrapa subdiffusa (Prodan) Rauschert accepted as Centaurea subdiffusa Prodan
• ×Anthechamomilla dominii (Rohlena) Rauschert accepted as ×Anthematricaria dominii Rohlena
• ×Anthematricaria dominii Rohlena
• ×Anthemimatricaria inolens P.Fourn.
• ×Anthemimatricaria maleolens P.Fourn.
• ×Anthemimatricaria sulfurea P.Fourn.
• ×Argyrautia degeneri Sherff
• ×Asterago lutea (Hort.) Everett (uncertain > unassessed)
• ×Asterago lutea Everett accepted as ×Solidaster luteus (Everett) M.L.Green ex Dress
• ×Asterigeron ucrainicus Tzvelev (uncertain > unassessed)
• ×Carduogalactites ludoviciae (Bertr.) P.Fourn.
• ×Centauserratula mouterdei Arènes
• ×Chrysaboltonia pulcherrima Arends (uncertain > unassessed)
• ×Chrysanthemoachillea borzae Prodan (uncertain > unassessed)
• ×Chrysanthemoachillea carmen-sylvae Prodan ex Nyár. (uncertain > unassessed)
• ×Cirsio-carduus borderi (Rouy) Arènes (uncertain > unassessed)
• ×Cirsio-carduus cirsiformis (Vuk.) Arènes
• ×Cirsio-carduus hohenackeri Arènes
• ×Cirsio-carduus jaubertianus (Sennen & Septimin) Arènes
• ×Cirsio-carduus lutetianus Arènes
• ×Cirsio-carduus parisiensis P.Fourn.
• ×Colycea valdesii-bermejoi (Fern.Casas & Susanna) Fern.Casas & Susanna (uncertain > unassessed)
• ×Colymbacosta genesii-lopezii (Fern.Casas & Susanna) Fern.Casas & Susanna (uncertain > unassessed)
• ×Colymbacosta grabowskiana (Wagner) Rauschert accepted as Centaurea ×grabowskiana J.Wagner
• ×Conygeron huelsenii (Vatke) Holub (uncertain > unassessed)
• ×Conyzigeron huelsenii (Vatke) Rauschert
• ×Crepidiastrixeris denticulato-lanceolata Kitam. accepted as Crepidiastrum muratagenii H.Ohashi & K.Ohashi
• ×Crepidiastrixeris denticulato-platyphylla (Makino) Kitam. accepted as Crepidiastrum ×nakaii H.Ohashi & K. Ohashi
• ×Crepidiastrixeris surugensis (Hisauti) Kitam. accepted as Crepidiastrum surugense (Hisauti) Yonek.
• ×Crepi-Hieracium garnieri (Petitm.) P.Fourn.
• ×Filfia mixta (Holuby) Holub
• ×Giflifa mixta (Holuby) Chrtek & Holub (uncertain > unassessed)
• ×Heterokalimeris maruyamae Kitam. (uncertain > unassessed)
• ×Solidaster hybridus Wehrhahn (uncertain > unassessed)
• ×Solidaster lutens M.L.Green
• ×Solidaster luteus (Everett) M.L.Green (uncertain > unassessed)
• ×Solidaster luteus (Everett) M.L.Green ex Dress
• Aaadonta angaurana Solem, 1976
• Aaadonta constricta (C. Semper, 1874)
• Aaadonta constricta babelthuapi Solem, 1976
• Aaadonta constricta constricta (C. Semper, 1874)
• Aaadonta constricta komakanensis Solem, 1976
• Aaadonta fuscozonata (R. H. Beddome, 1889)
• Aaadonta fuscozonata depressa Solem, 1976
• Aaadonta fuscozonata fuscozonata (R. H. Beddome, 1889)
• Aaadonta irregularis (C. Semper, 1874)
• Aaadonta kinlochi Solem, 1976
• Aaadonta pelewana Solem, 1976
• Aaata brepha Laubenfels, 1930 accepted as Clathria (Microciona) brepha (Laubenfels, 1930)
• Aaata spongigartina Laubenfels, 1930 accepted as Clathria (Microciona) spongigartina (Laubenfels, 1930)
• Aahithis erraticus (Schallreuter, 1985) †
• Aahithis vanspronsenae Schallreuter, 1988 †
• Aaleniella (Aaleniella) compressa Plumhoff, 1963 † represented as Aaleniella compressa Plumhoff, 1963 †
• Aaleniella (Danocythere) gracilis Christensen & Kilenyi, 1970 †
• Aaleniella (Danocythere) inornata (Kilenyi, 1969) †
• Aaleniella compressa Plumhoff, 1963 †
• Aapticheilichthys websteri (Huber, 2007)
• Aaptolasma americanum (Pilsbry, 1916) accepted as Hexelasma americanum Pilsbry, 1916
• Aaptolasma arafurae (Hoek, 1883) accepted as Hexelasma arafurae Hoek, 1913
• Aaptolasma brintoni Newman & Ross, 1971 accepted as Hexelasma brintoni (Newman & Ross, 1971)
• Aaptolasma callistoderma (Pilsbry, 1911) accepted as Hexelasma callistoderma Pilsbry, 1911
• Aaptolasma ecaudatum (Hiro, 1933) accepted as Pachylasma ecaudatum Hiro, 1939
• Aaptolasma fosteri (Newman & Ross, 1971) accepted as Mesolasma fosteri (Newman & Ross, 1981)