| Nominal Species (n = 497) | Present allocation (n = 486) | Ref. |
|---|---|---|
| Diplosoma abbotti Eldredge, 1966 | Diplosoma abbotti | 2442 |
| Lissoclinum abdominale Monniot, 1983 | Lissoclinum abdominale | 19 |
| Leptoclinides aciculus Kott, 2001 | Leptoclinides aciculus | 19 |
| Polysyncraton adelon Monniot, & Monniot, 2001 | Polysyncraton adelon | 19 |
| Polysyncraton adenalis Romanov, 1977 | Polysyncraton adenalis | 7502 |
| Lissoclinum agriculum Kott, 2005 | Lissoclinum agriculum | 1134 |
| Didemnum ahu Monniot & Monniot, 1987 | Didemnum ahu | 19 |
| Leptoclinides albamaculatus Kott, 2001 | Leptoclinides albamaculatus | 19 |
| Leptoclinum albidum Verrill, | Leptoclinum albidum | 3477 |
| Leptoclinum albidum grande Herdman, 1886 | Didemnum grande | 1134 |
| Didemnum albopunctatum Sluiter, 1909 | Didemnum albopunctatum | 19 |
| Trididemnum alexi Lambert, 2003 | Trididemnum alexi | 1749 |
| Didemnum algasedens Monniot, & Monniot, 2001 | Didemnum algasedens | 19 |
| Polysyncraton alingulum Kott, 2004 | Polysyncraton alingulum | 1134 |
| Trididemnum alleni Berrill, 1947 | Trididemnum alleni | 7688 |
| Trididemnum amiculum Kott, 2001 | Trididemnum amiculum | 19 |
| Didemnum amourouxi Lafargue, 1976 | Didemnum amourouxi | 19 |
| Didemnum anoi Monniot & Monniot, 1987 | Didemnum anoi | 19 |
| Diplosoma antarcticum Kott, 1969 | Diplosoma antarcticum | 19 |
| Didemnum apersum Tokioka, 1953 | Didemnum apersum | 19 |
| Leptoclinides apertus Monniot, 1989 | Leptoclinides apertus | 19 |
| Didemnum apuroto Monniot & Monniot, 1987 | Didemnum apuroto | 19 |
| Polysyncraton arafurensis Tokioka, 1952 | Polysyncraton arafurensis | 19 |
| Didemnum arancium Kott, 2001 | Didemnum arancium | 19 |
| Didemnum aratore Kott, 2004 | Didemnum aratore | 19 |
| Polysyncraton arvum Kott, 2004 | Polysyncraton arvum | 19 |
| Polysyncraton asperum Romanov, 1989 | Polysyncraton asperum | 19 |
| Leptoclinides aspiculatum Romanov, 1989 | Leptoclinides aspiculatum | 19 |
| Didemnum asterix Kott, 2004 | Didemnum asterix | 19 |
| Polysyncraton asterix Monniot, 1975 | Polysyncraton asterix | 19 |
| Didemnum astrum Kott, 2001 | Didemnum astrum | 19 |
| Diplosoma ata Monniot & Monniot, 1987 | Diplosoma ata | 19 |
| Didemnum augusti Michaelsen, 1920 | Didemnum augusti | 2442 |
| Leptoclinides aurantiacus Brewin, 1956 | Leptoclinides aurantiacus | 19 |
| Didemnum aures Monniot, 2001 | Didemnum aures | 19 |
| Lissoclinum aureum Verrill, 1871 | Lissoclinum aureum | 19 |
| Trididemnum auriculatum Michaelsen, 1919 | Trididemnum auriculatum | 19 |
| Lissoclinum badium Monniot & Monniot, 1996 | Lissoclinum badium | 19 |
| Trididemnum banneri Eldredge, 1967 | Trididemnum banneri | 19 |
| Didemnum bentarti Varela & Ramos-Esplá, 2008 | Didemnum bentarti | 89759 |
| Didemnum beringense Romanov, 1977 | Didemnum beringense | 19 |
| Didemnum bicolor Kott, 2001 | Didemnum bicolor | 19 |
| Didemnum biglutinum Monniot, 1995 | Didemnum biglutinum | 19 |
| Lissoclinum bilobatum Millar, 1955 | Lissoclinum bilobatum | 19 |
| Polysyncraton bilobatum Lafargue, 1968 | Polysyncraton bilobatum | 19 |
| Didemnum bimasculum Monniot, 1995 | Didemnum bimasculum | 19 |
| Didemnum bisectatum Kott, 2001 | Didemnum bisectatum | 19 |
| Didemnum bistratum Sluiter, 1905 | Lissoclinum bistratum | 1661 |
| Leptoclinum bistratum Sluiter, 1905 | Leptoclinum bistratum | 3477 |
| Lissoclinum bistratum Sluiter, 1905 | Lissoclinum bistratum | 19 |
| Didemnum bisyncraton Michaelsen, 1920 | Didemnum bisyncraton | 2442 |
| Leptoclinides brandi Kott, 2001 | Leptoclinides brandi | 19 |
| Leptoclinides brasiliensis Michaelsen, 1923 | Leptoclinides brasiliensis | 19 |
| Didemnum braueri Michaelsen, 1920 | Didemnum braueri | 2442 |
| Didemnum brevioris Monniot & Monniot, 1997 | Didemnum brevioris | 19 |
| Trididemnum caelatum Kott, 2001 | Trididemnum caelatum | 19 |
| Leptoclinides caelestis Kott, 2001 | Leptoclinides caelestis | 19 |
| Didemnum caesium Sluiter, 1909 | Didemnum caesium | 19 |
| Lissoclinum caliginosum Kott, 2001 | Lissoclinum caliginosum | 19 |
| Lissoclinum calycis Monniot, 1992 | Lissoclinum calycis | 19 |
| Didemnum candidum Savigny, 1816 | Didemnum candidum | 19 |
| Polysyncraton canetense Brément, 1913 | Polysyncraton canetense | 19 |
| Didemnum captivum Monniot & Monniot, 1997 | Didemnum captivum | 19 |
| Leptoclinides carduus Kott, 2001 | Leptoclinides carduus | 19 |
| Diplosoma carnosum Drasche, 1883 | Diplosoma carnosum | 19 |
| Didemnum carnulentum Ritter & Forsyth, 1917 | Didemnum carnulentum | 19 |
| Polysyncraton catillum Kott, 2004 | Polysyncraton catillum | 19 |
| Didemnum caudiculatum Romanov, 1989 | Didemnum caudiculatum | 19 |
| Diplosomoides caulleryi Ritter & Forsyth, 1917 | Lissoclinum caulleryi | 7507 |
| Leptoclinides cavernosus Kott, 2001 | Leptoclinides cavernosus | 19 |
| Lissoclinum cavum Millar, 1962 | Lissoclinum cavum | 1756 |
| Polysyncraton cerebellum Monniot, & Monniot, 2001 | Polysyncraton cerebellum | 19 |
| Didemnum cerebrale Michaelsen, 1920 | Didemnum cerebrale | 19 |
| Trididemnum cerebriforme Hartmeyer, 1913 | Trididemnum cerebriforme | 19 |
| Didemnum chilense Ärrnbäck, 1929 | Didemnum chilense | 19 |
| Didemnum cilicium Kott, 2005 | Didemnum cilicium | 1134 |
| Polysyncraton circulum Kott, 1962 | Polysyncraton circulum | 19 |
| Lissoclinum clavatum Kott, 2005 | Lissoclinum clavatum | 1134 |
| Didemnum clavum Kott, 2001 | Didemnum clavum | 19 |
| Trididemnum clinides Kott, 1977 | Trididemnum clinides | 19 |
| Lissoclinum coactum Kott, 2004 | Lissoclinum coactum | 19 |
| Leptoclinides comitus Kott, 2001 | Leptoclinides comitus | 19 |
| Leptoclinides compactus Kott, 2001 | Leptoclinides compactus | 19 |
| Didemnum complexum Kott, 2001 | Didemnum complexum | 19 |
| Leptoclinides complexus Kott, 2002 | Leptoclinides complexus | 19 |
| Lissoclinum concavum Kott, 2001 | Lissoclinum concavum | 19 |
| Lissoclinum conchylium Kott, 2001 | Lissoclinum conchylium | 19 |
| Leptoclinides confirmatus Kott, 2001 | Leptoclinides confirmatus | 19 |
| Didemnum congregatum Kott, 2004 | Didemnum congregatum | 19 |
| Leptoclinides constellatus Kott, 2001 | Leptoclinides constellatus | 19 |
| Didemnum contortum Monniot & Monniot, 1997 | Didemnum contortum | 19 |
| Didemnum coralliforme Kott, 2004 | Didemnum coralliforme | 19 |
| Didemnum corium Kott, 2005 | Didemnum corium | 1134 |
| Lissoclinum cornutum Monniot, 1992 | Lissoclinum cornutum | 19 |
| Didemnum crescente Kott, 2001 | Didemnum crescente | 19 |
| Trididemnum cristatum Kott, 2001 | Trididemnum cristatum | 19 |
| Trididemnum crystallinum Kott, 2001 | Trididemnum crystallinum | 19 |
| Diplosomoides cuculliferum Sluiter, 1909 | Didemnum cuculliferum | 1661 |
| Leptoclinides cucurbitus Kott, 2004 | Leptoclinides cucurbitus | 19 |
| Trididemnum cyanophorum Lafargue & Duclaux, 1979 | Trididemnum cyanophorum | 1758 |
| Trididemnum cyclops Michaelsen, 1921 | Trididemnum cyclops | 19 |
| Didemnum cygnuus Kott, 2001 | Didemnum cygnuus | 19 |
| Didemnum dealbatum Sluiter, 1909 | Didemnum dealbatum | 19 |
| Leptoclinides decoratus Kott, 2004 | Leptoclinides decoratus | 19 |
| Didemnum delectum Kott, 2001 | Didemnum delectum | 19 |
| Trididemnum delesseriae Lafargue, 1968 | Trididemnum delesseriae | 19 |
| Polysyncraton dentatum Kott, 2001 | Polysyncraton dentatum | 19 |
| Didemnum dicolla Monniot & Monniot, 1997 | Didemnum dicolla | 19 |
| Leptoclinides diemenensis Michaelsen, 1924 | Leptoclinides diemenensis | 19 |
| Didemnum diffundum Monniot, 1995 | Didemnum diffundum | 19 |
| Didemnum digestum Sluiter, 1909 | Didemnum digestum | 19 |
| Polysyncraton discoides Kott, 1962 | Polysyncraton discoides | 19 |
| Leptoclinum discrepans Sluiter, 1909 | Trididemnum discrepans | 1661 |
| Didemnum dispersum Sluiter, 1909 | Trididemnum dispersum | 1134 |
| Didemnum diversum Kott, 2004 | Didemnum diversum | 19 |
| Lissoclinum diversum Kott, 2004 | Lissoclinum diversum | 19 |
| Didemnum domesticum Kott, 2004 | Didemnum domesticum | 19 |
| Didemnum drachi Lafargue, 1975 | Didemnum drachi | 19 |
| Polysyncraton dromide Kott, 2001 | Polysyncraton dromide | 19 |
| Polysyncraton dubium Sluiter, 1909 | Leptoclinides dubius | 1661 |
| Trididemnum duci Harant, 1930 | Trididemnum duci | 85347 |
| Leptoclinides duminus Millar, 1982 | Leptoclinides duminus | 19 |
| Didemnum duplicatum Monniot, 1983 | Didemnum duplicatum | 1758 |
| Lissoclinum durabile Kott, 2001 | Lissoclinum durabile | 19 |
| Leptoclinides durus Kott, 2001 | Leptoclinides durus | 19 |
| Polysyncraton echinatum Kott, 2001 | Polysyncraton echinatum | 19 |
| Leptoclinides echinatus Tokioka, 1954 | Leptoclinides echinatus | 19 |
| Leptoclinides echinus Kott, 2001 | Leptoclinides echinus | 19 |
| Didemnum ectensum Romanov, 1989 | Didemnum ectensum | 19 |
| Didemnum edmondsoni Eldredge, 1967 | Didemnum edmondsoni | 1601 |
| Didemnum effusium Kott, 2001 | Didemnum effusium | 19 |
| Didemnum elikapekae Eldredge, 1967 | Didemnum elikapekae | 1601 |
| Didemnum elongatum Sluiter, 1909 | Didemnum elongatum | 19 |
| Didemnum epikelp Monniot, 2001 | Didemnum epikelp | 19 |
| Leptoclinides erinaceus Kott, 2001 | Leptoclinides erinaceus | 19 |
| Trididemnum erythraeum Michaelsen, 1923 | Trididemnum erythraeum | 2442 |
| Didemnum etiolum Kott, 1982 | Didemnum etiolum | 19 |
| Leptoclinides exiguus Kott, 2001 | Leptoclinides exiguus | 19 |
| Polysyncraton fadeevi Romanov, 1989 | Polysyncraton fadeevi | 19 |
| Leptoclinides faeroensis Bjerkan, 1905 | Leptoclinides faeroensis | 19 |
| Trididemnum farrago Kott, 2004 | Trididemnum farrago | 1134 |
| Diplosoma fecundum Kott, 2004 | Diplosoma fecundum | 19 |
| Diplosoma ferrugeum Kott, 2001 | Diplosoma ferrugeum | 19 |
| Trididemnum fetia Monniot & Monniot, 1987 | Trididemnum fetia | 19 |
| Didemnum fibriae Kott, 2004 | Didemnum fibriae | 19 |
| Didemnum filiforme Romanov, 1989 | Didemnum filiforme | 19 |
| Polysyncraton flammeum Kott, 2001 | Polysyncraton flammeum | 19 |
| Didemnum flavoviride Monniot, 1995 | Didemnum flavoviride | 19 |
| Didemnum fragile Sluiter, 1909 | Didemnum fragile | 19 |
| Didemnum fragilis Sluiter, 1909 | Didemnum fragile | 102688 |
| Didemnum fragum Kott, 2001 | Didemnum fragum | 19 |
| Leptoclinides frustus Kott, 2005 | Leptoclinides frustus | 1134 |
| Didemnum fucatum Sluiter, 1909 | Didemnum fucatum | 19 |
| Leptoclinides fungiformis Kott, 1972 | Leptoclinides fungiformis | 19 |
| Didemnum fuscum Sluiter, 1909 | Didemnum fuscum | 19 |
| Polysyncraton fuscum Nott, 1892 | Polysyncraton fuscum | 19 |
| Polysyncraton galaxum Kott, 2004 | Polysyncraton galaxum | 19 |
| Diplosoma gelatinosa Harant & Vernières, 1938 | Diplosoma gelatinosa | 19 |
| Didemnum gemmiparum Romanov, 1976 | Didemnum gemmiparum | 19 |
| Didemnum gintonicum Eldredge, 1966 | Didemnum gintonicum | 2442 |
| Diplosoma glandulosum Monniot, 1983 | Diplosoma glandulosum | 1757 |
| Polysyncraton glaucum Kott, 2001 | Polysyncraton glaucum | 19 |
| Didemnum globiferum Monniot, 2001 | Didemnum globiferum | 19 |
| Leptoclinides grandistellus Kott, 2004 | Leptoclinides grandistellus | 19 |
| Didemnum granulatum Tokioka, 1954 | Didemnum granulatum | 19 |
| Trididemnum graphicum Lahille, 1890 | Trididemnum graphicum | 85347 |
| Lissoclinum guinense Monniot, & Monniot, 2001 | Lissoclinum guinense | 19 |
| Didemnum guttatum Monniot & Monniot, 1996 | Didemnum guttatum | 19 |
| Didemnum halimedae Monniot, 1983 | Didemnum halimedae | 3477 |
| Diplosoma handi Eldredge, 1967 | Diplosoma handi | 1661 |
| Polysyncraton haranti Lafargue, 1975 | Polysyncraton haranti | 19 |
| Polysyncraton hartmeyeri Michaelsen, 1923 | Polysyncraton hartmeyeri | 1661 |
| Leptoclinides hawaiensis Tokioka, 1953 | Leptoclinides hawaiensis | 19 |
| Didemnum helgolandicum Michaelsen, 1921 | Didemnum helgolandicum | 19 |
| Didemnum herba Kott, 2001 | Didemnum herba | 19 |
| Trididemnum hians Monniot, 1983 | Trididemnum hians | 1758 |
| Diplosoma hiatti Eldredge, 1967 | Diplosoma hiatti | 1661 |
| Didemnum hiopaa Monniot & Monniot, 1987 | Didemnum hiopaa | 19 |
| Coelocormus huxleyi Herdman, 1886 | Coelocormus huxleyi | 19 |
| Didemnum immundum Romanov, 1974 | Didemnum immundum | 19 |
| Didemnum inaequilobatum Daumezon, 1909 | Didemnum inaequilobatum | 3694 |
| Didemnum inauratum Monniot, 1983 | Didemnum inauratum | 1758 |
| Leptoclinum incanum Herdman, 1899 | Didemnum incanum | 1134 |
| Trididemnum inermum Monniot, & Monniot, 2001 | Trididemnum inermum | 19 |
| Diplosoma inflatum Monniot & Monniot, 1994 | Diplosoma translucidum | 19 |
| Polysyncraton infundibulum Kott, 2001 | Polysyncraton infundibulum | 19 |
| Didemnum inveteratum Kott, 2001 | Didemnum inveteratum | 19 |
| Lissoclinum japonicum Tokioka, 1958 | Lissoclinum japonicum | 19 |
| Didemnum jedanense Sluiter, 1909 | Didemnum jedanense | 19 |
| Didemnopsis jolense Van Name, 1918 | Trididemnum discrepans | 1456 |
| Didemnum jucundum Kott, 2001 | Didemnum jucundum | 19 |
| Lissoclinum karenae Kott, 2005 | Lissoclinum karenae | 3660 |
| Polysyncraton kashenkoi Romanov, 1989 | Polysyncraton kashenkoi | 19 |
| Leptoclinides kerguelenensis Kott, 1954 | Leptoclinides kerguelenensis | 19 |
| Leptoclinides kingi Michaelsen, 1930 | Leptoclinides kingi | 19 |
| Polysyncraton krylatkae Romanov, 1974 | Polysyncraton krylatkae | 19 |
| Didemnum kurilense Romanov, 1989 | Didemnum kurilense | 19 |
| Didemnum lacertosum Monniot, 1995 | Didemnum lacertosum | 19 |
| Diplosoma lafargueae Vazquez, 1993 | Diplosoma lafargueae | 19 |
| Didemnum lahillei Hartmeyer, 1909 | Didemnum lahillei | 19 |
| Didemnum lambitum Michaelsen, 1924 | Didemnum lambitum | 19 |
| Lissoclinum laneum Kott, 2004 | Lissoclinum laneum | 19 |
| Trididemnum lapidosum Kott, 2001 | Trididemnum lapidosum | 19 |
| Didemnum leopardi Monniot, 2001 | Didemnum leopardi | 19 |
| Didemnum leopardus Kott, 2005 | Didemnum leopardus | 1134 |
| Didemnum levitas Kott, 2001 | Didemnum levitas | 19 |
| Leptoclinides levitatus Kott, 2001 | Leptoclinides levitatus | 19 |
| Lissoclinum levitum Kott, 2001 | Lissoclinum levitum | 19 |
| Didemnum ligulum Monniot, 1983 | Didemnum ligulum | 19 |
| Didemnum lillipution Kott, 2004 | Didemnum lillipution | 19 |
| Lissoclinum limosum Kott, 2001 | Lissoclinum limosum | 19 |
| Didemnum linatum Kott, 2001 | Didemnum linatum | 19 |
| Polysyncraton linere Kott, 2004 | Polysyncraton linere | 19 |
| Didemnum linguiferum Monniot & Monniot, 1996 | Didemnum linguiferum | 19 |
| Didemnum lissoclinum Kott, 2001 | Didemnum lissoclinum | 19 |
| Leptoclinides lissus Hastings, 1931 | Leptoclinides lissus | 19 |
| Leptoclinum listerianum Milne-Edwards, 1841 | Diplosoma listerianum | 1661 |
| Didemnum lithostrotum Brewin, 1956 | Didemnum lithostrotum | 3477 |
| Polysyncraton lodix Kott, 2001 | Polysyncraton lodix | 19 |
| Leptoclinides longicollis Kott, 2001 | Leptoclinides longicollis | 19 |
| Polysyncraton longitubis Kott, 2004 | Polysyncraton longitubis | 19 |
| Trididemnum luderitzi Michaelsen, 1919 | Trididemnum luderitzi | 2442 |
| Diplosoma lukini Romanov, 1989 | Diplosoma lukini | 19 |
| Polysyncraton luteum Kott, 2004 | Polysyncraton luteum | 19 |
| Diplosoma macdonaldi Herdman, 1886 | Diplosoma listerianum | 19 |
| Didemnum macrosiphonium Kott, 2001 | Didemnum macrosiphonium | 19 |
| Didemnum macrospiculatum Tokioka, 1967 | Didemnum macrospiculatum | 19 |
| Leptoclinides macrotestis Romanov, 1977 | Leptoclinides macrotestis | 19 |
| Lissoclinum maculatum Kott, 2001 | Lissoclinum maculatum | 19 |
| Leptoclinides maculatus Kott, 2001 | Leptoclinides maculatus | 19 |
| Leptoclinides madara Tokioka, 1953 | Leptoclinides madara | 19 |
| Didemnum madeleinae Monniot, & Monniot, 2001 | Didemnum madeleinae | 19 |
| Polysyncraton magnetae Hastings, 1931 | Polysyncraton magnetae | 19 |
| Didemnum magnilarvum Millar, 1962 | Didemnum magnilarvum | 3477 |
| Leptoclinides magnistellus Kott, 2001 | Leptoclinides magnistellus | 19 |
| Didemnum makropnous Sluiter, 1909 | Didemnum grande | 1456 |
| Didemnum mantile Kott, 2001 | Didemnum mantile | 19 |
| Trididemnum maragogi de Rocha, 2002 | Trididemnum maragogi | 19 |
| Leptoclinides marmoreus Brewin, 1956 | Leptoclinides marmoreus | 19 |
| Lissoclinum marpum Millar, 1953 | Lissoclinum marpum | 1756 |
| Diplosoma marsupiale Monniot, & Monniot, 2001 | Diplosoma marsupiale | 19 |
| Atriolum marsupialis Monniot, 1989 | Leptoclinides marsupialis | 19 |
| Diplosoma matie Monniot & Monniot, 1987 | Diplosoma matie | 19 |
| Polysyncraton meandratum Monniot, 1993 | Polysyncraton meandratum | 19 |
| Didemnum megaductus Romanov, 1974 | Didemnum megaductus | 19 |
| Didemnum megasterix Kott, 1995 | Didemnum megasterix | 19 |
| Trididemnum mellitum Kott, 2005 | Trididemnum mellitum | 3660 |
| Didemnum membranaceum Sluiter, 1909 | Didemnum membranaceum | 19 |
| Lissoclinum mereti Monniot & Monniot, 1987 | Lissoclinum mereti | 19 |
| Trididemnum meridionale Millar, 1953 | Trididemnum meridionale | 3663 |
| Didemnum mesembrinum Monniot, 2001 | Didemnum mesembrinum | 19 |
| Didemnum microthoracicum Kott, 2001 | Didemnum microthoracicum | 19 |
| Didemnum millari Monniot, 2001 | Didemnum millari | 19 |
| Didemnum milleporae Vasseur, 1969 | Didemnum milleporae | 3477 |
| Polysyncraton millepore Vasseur, 1969 | Polysyncraton millepore | 19 |
| Polysyncraton miniastrum Kott, 2004 | Polysyncraton miniastrum | 19 |
| Trididemnum miniatum Kott, 1977 | Trididemnum miniatum | 19 |
| Leptoclinides minimus Kott, 2005 | Leptoclinides minimus | 1134 |
| Didemnum minisculum Kott, 2001 | Didemnum minisculum | 19 |
| Didemnum minispirale Romanov, 1989 | Didemnum minispirale | 19 |
| Diplosoma mitsukuri Oka, 1892 | Diplosoma mitsukuri | 19 |
| Diplosoma modestum Michaelsen, | Diplosoma modestum | 3477 |
| Diplosomoides molle Herdman, 1886 | Didemnum molle | 1661 |
| Didemnum monile Kott, 2001 | Didemnum monile | 19 |
| Polysyncraton montanum Kott, 2004 | Polysyncraton montanum | 19 |
| Didemnum mortenseni Michaelsen, 1924 | Polysyncraton mortenseni | 3477 |
| Polysyncraton multiforme Kott, 2001 | Polysyncraton multiforme | 19 |
| Leptoclinides multilobatus Kott, 1954 | Leptoclinides multilobatus | 19 |
| Polysyncraton multipapilla Monniot, 1993 | Polysyncraton multipapilla | 19 |
| Diplosoma multipapillata Kott, 1980 | Diplosoma multipapillata | 19 |
| Leptoclinides multipapillatus Monniot, 1989 | Leptoclinides multipapillatus | 19 |
| Didemnum multispirale Kott, 2001 | Didemnum multispirale | 19 |
| Diplosoma multitestis Monniot & Monniot, 1996 | Diplosoma multitestis | 19 |
| Lissoclinum multitestis Monniot & Monniot, 1996 | Lissoclinum multitestis | 19 |
| Didemnum mutabile Monniot & Monniot, 1987 | Didemnum mutabile | 19 |
| Didemnum nambucciensis Kott, 2004 | Didemnum nambucciensis | 19 |
| Trididemnum natalense Michaelsen, 1920 | Trididemnum natalense | 19 |
| Lissoclinum nebulosum Monniot & Monniot, 1996 | Lissoclinum nebulosum | 19 |
| Didemnum nekozita Tokioka, 1967 | Didemnum nekozita | 19 |
| Didemnum nigricans Monniot, 2001 | Didemnum nigricans | 19 |
| Polysyncraton nigropunctatum Sluiter, 1909 | Polysyncraton nigropunctatum | 19 |
| Didemnum nigrum Monniot & Monniot, 1996 | Didemnum nigrum | 19 |
| Polysyncraton niveum Kott, 2004 | Polysyncraton niveum | 19 |
| Trididemnum nobile Kott, 2001 | Trididemnum nobile | 19 |
| Didemnum nocturnum Monniot & Monniot, 1997 | Didemnum nocturnum | 19 |
| Lissoclinum notti Brewin, 1958 | Lissoclinum notti | 19 |
| Leptoclinides novaezelandiae Brewin, 1958 | Leptoclinides novaezelandiae | 19 |
| Trididemnum nubilum Kott, 1980 | Trididemnum nubilum | 19 |
| Trididemnum nubis Monniot, 1991 | Trididemnum nubis | 3477 |
| Clitella nutricula Kott, 2001 | Clitella nutricula | 19 |
| Didemnum oblitum Kott, 2001 | Didemnum oblitum | 19 |
| Didemnum obscurum Monniot, 1969 | Didemnum obscurum | 19 |
| Polysyncraton oceanium Kott, 2001 | Polysyncraton oceanium | 19 |
| Diplosoma ooru Oka, Suetsugu & Hirose, 2005 | Diplosoma ooru | 3125 |
| Polysyncraton orbiculum Kott, 1962 | Polysyncraton orbiculum | 19 |
| Leptoclinides oscitans Monniot & Monniot, 1996 | Leptoclinides oscitans | 19 |
| Didemnum ossium Kott, 2001 | Didemnum ossium | 19 |
| Polysyncraton otuetue Monniot & Monniot, 1987 | Polysyncraton otuetue | 19 |
| Didemnum paa Monniot & Monniot, 1987 | Didemnum paa | 19 |
| Didemnum pacificum Tokioka, 1953 | Didemnum pacificum | 19 |
| Polysyncraton palliolum Kott, 2001 | Polysyncraton palliolum | 19 |
| Diplosoma pannosum Monniot, & Monniot, 2001 | Diplosoma pannosum | 19 |
| Didemnum papillatum Romanov, 1974 | Didemnum papillatum | 19 |
| Polysyncraton papyrus Kott, 2001 | Polysyncraton papyrus | 19 |
| Trididemnum paraclinides Kott, 1982 | Trididemnum paraclinides | 19 |
| Trididemnum paracyclops Kott, 1980 | Trididemnum paracyclops | 19 |
| Polysyncraton paradoxum Nott, 1892 | Polysyncraton paradoxum | 19 |
| Polysyncraton paramushiri Romanov, 1989 | Polysyncraton paramushiri | 19 |
| Didemnum parancium Kott, 2001 | Didemnum parancium | 19 |
| Didemnum parau Monniot & Monniot, 1987 | Didemnum parau | 19 |
| Didemnum pardum Tokioka, 1963 | Didemnum pardum | 3705 |
| Didemnum parvum Monniot & Monniot, 2003 | Didemnum parvum | 2258 |
| Didemnoides patella Gottschaldt, 1898 | Lissoclinum patella | 1661 |
| Leptoclinum patulum Herdman, 1899 | Didemnum patulum | 1134 |
| Polysyncraton pavimentum Monniot, 1993 | Polysyncraton pavimentum | 19 |
| Diplosoma pavonia Monniot & Monniot, 1987 | Diplosoma virens | 19 |
| Diplosoma pavonina Monniot & Monniot, 1987 | Diplosoma pavonina | 19 |
| Didemnum pecten Kott, 2001 | Didemnum pecten | 19 |
| Polysyncraton pedunculatum Kott, 2001 | Polysyncraton pedunculatum | 19 |
| Trididemnum pedunculatum Lafargue, Ramos-Espla, Buencuerpo & Vazquez, 1993 | Trididemnum pedunculatum | 19 |
| Didemnum pele Eldredge, 1967 | Didemnum pele | 1601 |
| Didemnum pellucidum Kott, 2001 | Didemnum pellucidum | 19 |
| Polysyncraton peristroma Kott, 2004 | Polysyncraton peristroma | 19 |
| Didemnum perlucidum Monniot, 1983 | Didemnum perlucidum | 19 |
| Didemnum perplexum Kott, 2001 | Didemnum perplexum | 19 |
| Didemnum perspicuum Giard, 1873 | Didemnum perspicuum | 3477 |
| Didemnum peyrefittense Brément, 1913 | Didemnum peyrefittense | 19 |
| Echinoclinum philippinense Tokioka, 1967 | Lissoclinum philippinense | 3677 |
| Trididemnum pigmentatum Kott, 2001 | Trididemnum pigmentatum | 19 |
| Didemnum pitipiri Monniot & Monniot, 1987 | Didemnum pitipiri | 19 |
| Diplosoma pizoni Ritter & Forsyth, 1917 | Diplosoma pizoni | 19 |
| Leptoclinides placidus Kott, 2001 | Leptoclinides placidus | 19 |
| Trididemnum planum Sluiter, 1909 | Trididemnum planum | 19 |
| Didemnum plebium Kott, 2005 | Didemnum plebium | 1134 |
| Didemnum poecilomorpha Monniot & Monniot, 1996 | Didemnum poecilomorpha | 19 |
| Lissoclinum polyorchis Monniot, 1992 | Lissoclinum polyorchis | 19 |
| Trididemnum polyorchis Monniot & Monniot, 1996 | Trididemnum polyorchis | 19 |
| Polysyncraton polysystema Kott, 2005 | Polysyncraton polysystema | 1134 |
| Trididemnum poma Monniot, & Monniot, 2001 | Trididemnum poma | 19 |
| Diplosoma ponticum Romanov, 1989 | Diplosoma ponticum | 19 |
| Polysyncraton pontoniae Monniot & Monniot, 1987 | Polysyncraton pontoniae | 19 |
| Polysyncraton porou Monniot & Monniot, 1987 | Polysyncraton porou | 19 |
| Didemnum precocinum Kott, 2001 | Didemnum precocinum | 19 |
| Didemnum productum Monniot, 1995 | Didemnum tonga | 1456 |
| Leptoclinum protectum Daumezon, 1909 | Leptoclinum protectum | 3694 |
| Leptoclinides prunus Kott, 2004 | Leptoclinides prunus | 19 |
| Leptoclinum psammathodes Sluiter, 1895 | Didemnum psammatodes | 1661 |
| Didemnum psammatodes (Sluiter, 1895) | Didemnum psammatodes | 3477 |
| Leptoclinum psammatodes Sluiter, | Leptoclinum psammatodes | 3477 |
| Didemnum pseudobiglans Romanov, 1989 | Didemnum pseudobiglans | 19 |
| Didemnum pseudodiplosoma Kott, 1962 | Trididemnum pseudodiplosoma | 1134 |
| Didemnum pseudofulgens Médioni, 1970 | Didemnum pseudofulgens | 19 |
| Lissoclinum pseudoleptoclinum von Drasche, 1883 | Lissoclinum pseudoleptoclinum | 7346 |
| Polysyncraton pseudomagnetae Kott, 2004 | Polysyncraton pseudomagnetae | 19 |
| Polysyncraton pseudorugosum Monniot, 1993 | Polysyncraton pseudorugosum | 19 |
| Polysyncraton pulchrum Kott, 2001 | Polysyncraton pulchrum | 19 |
| Leptoclinides pulvinus Kott, 2005 | Leptoclinides pulvinus | 1134 |
| Lissoclinum punctatum Kott, 1977 | Lissoclinum punctatum | 19 |
| Polysyncraton purou Monniot & Monniot, 1987 | Polysyncraton purou | 19 |
| Trididemnum pusillum Kott, 2004 | Trididemnum pusillum | 19 |
| Atriolum quadratum Monniot & Monniot, 1996 | Leptoclinides quadratum | 19 |
| Didemnum quincunciale Michaelsen, | Didemnum quincunciale | 2442 |
| Lissoclinum ravarava Monniot & Monniot, 1987 | Lissoclinum ravarava | 19 |
| Didemnum recurvatum Sluiter, 1909 | Didemnum recurvatum | 19 |
| Diplosoma redika Monniot & Monniot, 1994 | Diplosoma redika | 19 |
| Polysyncraton reedi Monniot & Monniot, 1994 | Polysyncraton reedi | 2673 |
| Lissoclinum reginum Kott, 2001 | Lissoclinum reginum | 19 |
| Polysyncraton regulum Kott, 2001 | Polysyncraton regulum | 19 |
| Didemnum reticulatum Sluiter, 1909 | Leptoclinides reticulatus | 1661 |
| Trididemnum reticulatum Kott, 2004 | Trididemnum reticulatum | 19 |
| Polysyncraton reticulum Kott, 2004 | Polysyncraton reticulum | 19 |
| Polysyncraton rica Kott, 2001 | Polysyncraton rica | 19 |
| Leptoclinides rigidus Kott, 2001 | Leptoclinides rigidus | 19 |
| Didemnum roberti Michaelsen, 1930 | Didemnum roberti | 19 |
| Leptoclinides robiginis Monniot, 1989 | Leptoclinides robiginis | 19 |
| Polysyncraton robustum Kott, 2001 | Polysyncraton robustum | 19 |
| Didemnum rodriguesi Rocha & Monniot, 1993 | Didemnum rodriguesi | 19 |
| Didemnum romssae Marks, 1996 | Didemnum romssae | 19 |
| Didemnum roseum Sars, 1851 | Didemnum roseum | 19 |
| Lissoclinum roseum Kott, 2001 | Lissoclinum roseum | 19 |
| Trididemnum roseum Plante & Vasseur, 1966 | Trididemnum roseum | 7744 |
| Polysyncraton rostrum Monniot & Monniot, 1997 | Polysyncraton rostrum | 19 |
| Didemnum rota Kott, 2004 | Didemnum rota | 19 |
| Didemnum rubeum Monniot & Monniot, 1996 | Didemnum rubeum | 19 |
| Leptoclinum rubicundum Herdman, 1886 | Polysyncraton chondrilla | 3477 |
| Polysyncraton rubitapum Kott, 2001 | Polysyncraton rubitapum | 19 |
| Lissoclinum rubrum Monniot, 1975 | Lissoclinum rubrum | 19 |
| Polysyncraton rufum Sluiter, 1909 | Leptoclinides rufus | 1134 |
| Polysyncraton rugosum Monniot, 1993 | Polysyncraton rugosum | 19 |
| Didemnum sachalinense Romanov, 1989 | Didemnum sachalinense | 19 |
| Didemnopsis sansibaricum Michaelsen, | Didemnopsis sansibaricum | 3477 |
| Didemnum santaelenae Van Name, 1945 | Didemnum santaelenae | 19 |
| Didemnum savignii Herdman, 1886 | Trididemnum savignii | 1134 |
| Polysyncraton scobinum Kott, 2001 | Polysyncraton scobinum | 19 |
| Didemnum scopi Kott, 2001 | Didemnum scopi | 19 |
| Lissoclinum scopulosum Kott, 2004 | Lissoclinum scopulosum | 19 |
| Polysyncraton scorteum Kott, 2001 | Polysyncraton scorteum | 19 |
| Leptoclinides seminudus Kott, 2001 | Leptoclinides seminudus | 19 |
| Lissoclinum sente Kott, 2001 | Lissoclinum sente | 19 |
| Polysyncraton sideris Kott, 2001 | Polysyncraton sideris | 19 |
| Leptoclinum simile Sluiter, 1909 | Diplosoma simile | 1661 |
| Diplosoma simileguwa Oka, Suetsugu, & Hirose, 2005 | Diplosoma simileguwa | 3778 |
| Diplosoma singulare Lafargue, 1968 | Diplosoma singulare | 19 |
| Didemnum siphonale Tokioka, 1967 | Didemnum siphonale | 3677 |
| Diplosoma siphonale Romanov, 1977 | Diplosoma siphonale | 19 |
| Diplosoma siphoniata Romanov, 1977 | Diplosoma siphonale | 7502 |
| Leptoclinides sluiteri Brewin, 1950 | Leptoclinides sluiteri | 19 |
| Didemnum sordidum Kott, 2001 | Didemnum sordidum | 19 |
| Didemnum spadix Kott, 2001 | Didemnum spadix | 19 |
| Leptoclinides sparsus Michaelsen, 1924 | Leptoclinides sparsus | 19 |
| Didemnum sphaericum Tokioka, 1967 | Didemnum sphaericum | 3677 |
| Trididemnum spiculatum Kott, 1962 | Trididemnum spiculatum | 2442 |
| Trididemnum spongia Monniot, 1991 | Trididemnum spongia | 19 |
| Lissoclinum spongium Kott, 2001 | Lissoclinum spongium | 19 |
| Didemnum spongoides Sluiter, 1909 | Didemnum spongoides | 19 |
| Didemnum spumante Kott, 2004 | Didemnum spumante | 19 |
| Didemnum spumosum Kott, 2004 | Didemnum spumosum | 19 |
| Trididemnum spumosum Kott, 2001 | Trididemnum spumosum | 19 |
| Lissoclinum stellatum Kott, 2004 | Lissoclinum stellatum | 19 |
| Didemnum stercoratum Monniot & Monniot, 1996 | Didemnum stercoratum | 19 |
| Didemnum stilense Michaelsen, 1934 | Didemnum stilense | 1756 |
| Didemnum stragulum Kott, 2001 | Didemnum stragulum | 19 |
| Trididemnum strigosum Kott, 1981 | Trididemnum strigosum | 19 |
| Didemnum studeri Hartmeyer, 1911 | Didemnum studeri | 19 |
| Leptoclinum subflavum Herdman, 1886 | Didemnum subflavum | 3477 |
| Leptoclinum subviridis Sluiter, 1909 | Leptoclinides subviridis | 1661 |
| Didemnum sucosum Kott, 2001 | Didemnum sucosum | 19 |
| Leptoclinides sulawesi Monniot & Monniot, 1996 | Leptoclinides sulawesii | 1678 |
| Leptoclinides sulawesii Monniot & Monniot, 1996 | Leptoclinides sulawesii | 19 |
| Trididemnum symbioticum Pérès, 1962 | Trididemnum symbioticum | 2442 |
| Didemnum tabulatum Sluiter, 1909 | Didemnum tabulatum | 19 |
| Lissoclinum taratara Monniot & Monniot, 1987 | Lissoclinum taratara | 19 |
| Polysyncraton tasmanense Kott, 2001 | Polysyncraton tasmanense | 19 |
| Trididemnum tectum Kott, 2001 | Trididemnum tectum | 19 |
| Polysyncraton tegetum Kott, 2001 | Polysyncraton tegetum | 19 |
| Polysyncraton tenuicutis Kott, 2001 | Polysyncraton tenuicutis | 19 |
| Didemnum ternerratum Kott, 2001 | Didemnum ternerratum | 19 |
| Didemnum tetrahedrum Dias & Rodrigues, 2004 | Didemnum tetrahedrum | 2225 |
| Lissoclinum textile Monniot, & Monniot, 2001 | Lissoclinum textile | 19 |
| Lissoclinum textrinum Monniot, 1992 | Lissoclinum textrinum | 19 |
| Polysyncraton textus Kott, 2004 | Polysyncraton textus | 19 |
| Polysyncraton thallomorpha Monniot, 1993 | Polysyncraton thallomorpha | 19 |
| Didemnum theca Kott, 2001 | Didemnum theca | 19 |
| Trididemnum thetidis Van Name, 1945 | Trididemnum thetidis | 19 |
| Didemnum timorensis Sluiter, 1909 | Lissoclinum timorense | 1134 |
| Didemnum toafene Monniot & Monniot, 1987 | Didemnum toafene | 19 |
| Polysyncraton tokiokai Romanov, 1989 | Polysyncraton tokiokai | 19 |
| Trididemnum tomarahi Monniot & Monniot, 1987 | Trididemnum tomarahi | 19 |
| Didemnopsis translucidum Lafargue, 1968 | Trididemnum translucidum | 19 |
| Didemnum translucidum Tokioka, 1953 | Didemnum translucidum | 19 |
| Leptoclinum translucidum Hartmeyer, 1909 | Diplosoma translucidum | 3477 |
| Didemnum transparentum Romanov, 1977 | Didemnum transparentum | 19 |
| Diplosomoides triangulum Sluiter, 1909 | Lissoclinum triangulum | 1134 |
| Didemnum trispirale Romanov, 1989 | Didemnum trispirale | 19 |
| Didemnum trivolutum Millar, 1960 | Didemnum trivolutum | 19 |
| Leptoclinides tuberculatus Kott, 2004 | Leptoclinides tuberculatus | 19 |
| Polysyncraton tubiporae Michaelsen, 1920 | Polysyncraton tubiporae | 1661 |
| Lissoclinum tuheiavae Monniot & Monniot, 1987 | Lissoclinum tuheiavae | 19 |
| Leptoclinides tulearensis Plante & Vasseur, 1966 | Leptoclinides tulearensis | 7744 |
| Didemnum tumulatum Kott, 2004 | Didemnum tumulatum | 19 |
| Lissoclinum tunicatum Monniot & Monniot, 1996 | Lissoclinum tunicatum | 19 |
| Polysyncraton turris Kott, 2004 | Polysyncraton turris | 19 |
| Leptoclinides umbrosus Kott, 2001 | Leptoclinides umbrosus | 19 |
| Leptoclinides uniorbis Monniot & Monniot, 1996 | Leptoclinides uniorbis | 19 |
| Diplosoma unitestis Monniot, & Monniot, 2001 | Diplosoma unitestis | 19 |
| Leptoclinides unitestis Monniot, 1989 | Leptoclinides unitestis | 3477 |
| Didemnum usitatum Kott, 2004 | Didemnum usitatum | 19 |
| Didemnum uturoa Monniot & Monniot, 1987 | Didemnum uturoa | 19 |
| Trididemnum vahaereere Monniot & Monniot, 1987 | Trididemnum vahaereere | 19 |
| Didemnum vahatuio Monniot & Monniot, 1987 | Didemnum vahatuio | 19 |
| Didemnum vanderhorsti Van Name, 1924 | Didemnum vanderhorsti | 19 |
| Lissoclinum vareau Monniot & Monniot, 1987 | Lissoclinum vareau | 19 |
| Lissoclinum variabile Kott, 2001 | Lissoclinum variabile | 19 |
| Leptoclinides variegatus Kott, 2001 | Leptoclinides variegatus | 19 |
| Diplosoma variostigmatum Hirose & Oka, 2008 | Diplosoma variostigmatum | 84897 |
| Didemnum velans Michaelsen, 1920 | Didemnum velans | 1756 |
| Diplosoma velatum Kott, 2001 | Diplosoma velatum | 19 |
| Didemnum verdantum Kott, 2001 | Didemnum verdantum | 19 |
| Didemnum vermiforme Kott, 2002 | Didemnum vermiforme | 19 |
| Trididemnum vermiforme Kott, 2001 | Trididemnum vermiforme | 19 |
| Echinoclinum verrilli Van Name, 1902 | Lissoclinum verrilli | 19 |
| Diplosoma versicolor Monniot & Monniot, 1994 | Diplosoma versicolor | 19 |
| Didemnum vesperi Kott, 2004 | Didemnum vesperi | 19 |
| Polysyncraton vestiens Monniot, & Monniot, 2001 | Polysyncraton vestiens | 19 |
| Didemnum vestitum Kott, 2004 | Didemnum vexillum | 3477 |
| Didemnum vestum Kott, 2004 | Didemnum vestum | 1694 |
| Didemnum vexillum Romanov, 1989 | Didemnum vexillum | 19 |
| Didemnum via Kott, 2001 | Didemnum via | 19 |
| Polysyncraton victoriensis Kott, 1976 | Polysyncraton victoriensis | 1661 |
| Leptoclinum viride Herdman, 1906 | Didemnum viride | 1134 |
| Lissoclinum voeltzkowi Michaelsen, 1920 | Lissoclinum timorense | 1456 |
| Leptoclinides volvus Kott, 1975 | Leptoclinides volvus | 19 |
| Trididemnum vostoki Romanov, 1989 | Trididemnum vostoki | 19 |
| Didemnum vulgare Kott, 2001 | Didemnum vulgare | 19 |
| Lissoclinum vulgare Monniot, 1992 | Lissoclinum vulgare | 19 |
| Lissoclinum weigelei Lafargue, 1968 | Lissoclinum weigelei | 19 |
| Didemnum yolky Monniot & Monniot, 1997 | Didemnum yolky | 3477 |