| Nominal Species (n = 189) | Present allocation (n = 177) | Ref. |
|---|---|---|
| Pyura abradata Kott, 1985 | Pyura abradata | 19 |
| Boltenia africana Millar, 1962 | Boltenia africana | 1756 |
| Microcosmus agglutinans Hartmeyer, 1919 | Microcosmus agglutinans | 1661 |
| Pyura albanyensis Michaelsen, 1927 | Pyura robusta | 19 |
| Pyura ambonensis Millar, 1975 | Pyura ambonensis | 3584 |
| Microcosmus anchylodeirus Traustedt, 1883 | Microcosmus anchylodeirus | 1661 |
| Culeolus annulatus Sluiter, 1904 | Culeolus annulatus | 19 |
| Microcosmus anomalocarpus Millar, 1988 | Microcosmus anomalocarpus | 19 |
| Culeolus anonymus Monniot & Monniot, 1976 | Culeolus anonymus | 3477 |
| Culeolus antarcticus Vinogradova, 1962 | Culeolus antarcticus | 19 |
| Pyura antillarum Van Name, 1921 | Pyura antillarum | 19 |
| Ctenicella antipoda Kott, 1972 | Claudenus antipodus | 1134 |
| Hartmeyeria arctica Korczynski, 1989 | Hartmeyeria arctica | 19 |
| Microcosmus arenaceus Sluiter, 1900 | Microcosmus arenaceus | 19 |
| Cynthia arenosa Herdman, 1881 | Pyura arenosa | 1134 |
| Pyura aripuensis Herdman, 1906 | Pyura aripuensis | 19 |
| Herdmania armata Monniot, & Monniot, 2001 | Herdmania armata | 19 |
| Pyura aspera Tokioka, 1949 | Pyura sacciformis | 3705 |
| Bathypyura asymetrica Monniot, 1971 | Bathypyura asymetrica | 19 |
| Microcosmus australis Herdman, 1899 | Microcosmus australis | 19 |
| Pyura baliensis Millar, 1975 | Pyura baliensis | 3584 |
| Paraculeolus bicristatus Vinogradova, 1970 | Paraculeolus bicristatus | 2892 |
| Microcosmus bitunicatus Monniot, & Monniot, 2001 | Microcosmus bitunicatus | 19 |
| Hartmeyeria bouilloni Monniot & Monniot, 1976 | Hartmeyeria bouilloni | 19 |
| Boltenia bouvetensis Michaelsen, 1904 | Pyura bouvetensis | 1744 |
| Pyura bradleyi Van Name, 1931 | Pyura stolonifera | 19 |
| Halocynthia cactus Oka, 1932 | Halocynthia cactus | 19 |
| Cratostigma campoyi Ramos, Tyron & Lafargue, 1988 | Cratostigma campoyi | 19 |
| Pyura capensis Hartmeyer, 1911 | Pyura capensis | 19 |
| Culeolus caudatus Monniot & Monniot, 1991 | Culeolus caudatus | 19 |
| Bathypyura celata Monniot & Monniot, 1973 | Bathypyura celata | 19 |
| Pyura chilensis Molina, 1782 | Pyura chilensis | 19 |
| Hartmeyeria chinensis Tokioka, 1967 | Hartmeyeria chinensis | 19 |
| Herdmania colona Monniot & Monniot, 2003 | Herdmania colona | 2258 |
| Pyura columna Monniot & Monniot, 1991 | Pyura columna | 3125 |
| Pyura confragosa Kott, 1985 | Pyura confragosa | 19 |
| Herdmania contorta Monniot, 1992 | Herdmania contorta | 7690 |
| Herdmannia contorta Monniot, 1992 | Herdmania curvata | 19 |
| Herdmania coutieri Monniot, 2002 | Herdmania coutieri | 19 |
| Pyura crassacapitata Kott, 1985 | Pyura crassacapitata | 19 |
| Pyura crinita Michaelsen, 1922 | Pyura crinita | 3477 |
| Herdmania curvata Kott, 1952 | Herdmania curvata | 19 |
| Pyura curvigona Tokioka, 1950 | Pyura curvigona | 19 |
| Microcosmus curvus Tokioka, 1954 | Microcosmus curvus | 19 |
| Cynthia dumosa Stimpson, 1855 | Halocynthia dumosa | 1134 |
| Pyura dura Heller, 1877 | Pyura dura | 19 |
| Culeolus easteri Tokioka, 1967 | Culeolus easteri | 3677 |
| Boltenia elegans Herdman, 1881 | Boltenia ovifera | 87398 |
| Culeolus elegans Monniot & Monniot, 1991 | Culeolus elegans | 19 |
| Pyura elongata Tokioka, 1952 | Pyura elongata | 19 |
| Microcosmus exasperatus Heller, 1878 | Microcosmus exasperatus | 19 |
| Heterostigma fagei Monniot & Monniot, 1961 | Heterostigma fagei | 19 |
| Bathypera feminalba Young & Vazquez, 1995 | Bathypera feminalba | 19 |
| Herdmania fimbriae Kott, 2002 | Herdmania fimbriae | 19 |
| Cynthia fissa Herdman, 1881 | Pyura fissa | 1134 |
| Hartmeyeria formosa Herdman, 1881 | Hartmeyeria formosa | 19 |
| Cynthia gangelion Savigny, 1816 | Pyura gangelion | 1733 |
| Culeolus gigas Sluiter, 1904 | Culeolus gigas | 19 |
| Microcosmus goanus Michaelsen, 1918 | Microcosmus helleri | 1456 |
| Heterostigma gonochorica Monniot, 1965 | Heterostigma gonochorica | 19 |
| Bathypera goreaui Millar & Goodbody, 1974 | Bathypera goreaui | 19 |
| Cynthia grandis Heller, 1878 | Herdmania grandis | 1134 |
| Bathypera hastaefera Vinogradova, 1962 | Bathypera hastaefera | 19 |
| Cynthia haustor Stimpson, 1864 | Pyura haustor | 19 |
| Pyura hebridensis Monniot & Monniot, 2003 | Pyura hebridensis | 2258 |
| Microcosmus helleri Herdman, 1881 | Microcosmus helleri | 19 |
| Culeolus herdmani Sluiter, 1904 | Culeolus herdmani | 19 |
| Pyura herdmani Drasche, 1884 | Pyura herdmanni | 1756 |
| Pyurella hernia Monniot & Monniot, 1973 | Pyurella hernia | 3462 |
| Microcosmus hirsutus Sluiter, 1900 | Microcosmus hirsutus | 3651 |
| Boltenia hirta Monniot & Monniot, 1977 | Boltenia hirta | 19 |
| Pyura honu Monniot & Monniot, 1987 | Pyura honu | 19 |
| Culeolus hospitalis Monniot & Monniot, 2003 | Culeolus hospitalis | 2258 |
| Pyura hupferi Michaelsen, 1908 | Pyura hupferi | 2673 |
| Halocynthia hystrix Oka, 1930 | Pyura sacciformis | 19 |
| Halocynthia igaboja Oka, 1906 | Halocynthia igaboja | 19 |
| Pyura inopinata Monniot, 1978 | Pyura inopinata | 1756 |
| Herdmania insolita Monniot, & Monniot, 2001 | Herdmania insolita | 19 |
| Cratostigma intermedia Vazquez & Ramos-Espla, 1993 | Cratostigma intermedia | 19 |
| Ctenyura intermedia Van Name, 1918 | Ctenyura intermedia | 19 |
| Cynthia irregularis Herdman, 1881 | Pyura irregularis | 1134 |
| Pyura isobella Kott, 1985 | Pyura isobella | 19 |
| Halocynthia jakoboja Oka, 1906 | Pyura sacciformis | 19 |
| Halocynthia johnsoni Ritter, 1909 | Halocynthia johnsoni | 7391 |
| Herdmania kiiensis Nishikawa, 2002 | Herdmania kiiensis | 19 |
| Pyura lanka Herdman, 1906 | Pyura lanka | 19 |
| Pyura lepidoderma Tokioka, 1949 | Pyura lepidoderma | 19 |
| Pyura lignosa Michaelsen, 1908 | Pyura lignosa | 19 |
| Culeolus likae Sanamyan & Sanamyan, 2002 | Culeolus likae | 19 |
| Culeolus littoralis Kott, 1956 | Pyura littoralis | 1134 |
| Microcosmus longicloa Monniot & Monniot, 1991 | Microcosmus longicloa | 19 |
| Culeolus longipedunculatus Vinogradova, 1970 | Culeolus longipedunculatus | 19 |
| Pyura lycoperdon Monniot & Monniot, 1983 | Pyura lycoperdon | 19 |
| Microcosmus madagascariensis Michaelsen, 1918 | Microcosmus madagascariensis | 19 |
| Microcosmus manaarensis Monniot & Monniot, 1996 | Microcosmus manaarensis | 1743 |
| Pyura mariscata Rodrigues, 1966 | Pyura mariscata | 7488 |
| Heterostigma mediterranea Pérès, 1958 | Heterostigma mediterranea | 19 |
| Heterostigma melitensis Monniot & Monniot, 1976 | Heterostigma melitensis | 19 |
| Herdmania mentula Kott, 2002 | Herdmania mentula | 19 |
| Pyura millari Rodrigues, 1966 | Pyura millari | 7488 |
| Microcosmus miniaceus Sluiter, 1905 | Microcosmus miniaceus | 19 |
| Cynthia momus Savigny, 1816 | Herdmania momus | 19 |
| Halocynthia momus Savigny, | Halocynthia momus | 3477 |
| Hartmeyeria monarchica Hartmeyer, 1922 | Hartmeyeria monarchica | 19 |
| Culeolus moseley Herdman, 1881 | Culeolus moseley | 19 |
| Pyura mozambica Monniot, 2002 | Pyura mozambica | 19 |
| Microcosmus multiplicatus Tokioka, 1952 | Microcosmus multiplicatus | 19 |
| Pyura multiruga Monniot & Monniot, 1982 | Pyura multiruga | 19 |
| Culeolus murrayi Herdman, 1881 | Culeolus murrayi | 19 |
| Culeolus nadejdae Sanamyan, 1992 | Culeolus nadejdae | 3397 |
| Pyura navicula Kott, 1985 | Pyura navicula | 19 |
| Microcosmus nudistigma Monniot, 1962 | Microcosmus nudistigma | 19 |
| Pyura obesa Sluiter, 1912 | Pyura obesa | 19 |
| Halocynthia okai Ritter, 1907 | Halocynthia okai | 19 |
| Microcosmus oligophyllus Heller, 1878 | Microcosmus oligophyllus | 19 |
| Hartmeyeria orientalis Oka, 1929 | Hartmeyeria orientalis | 19 |
| Pyura ostreophila Michaelsen, 1927 | Pyura ostreophila | 19 |
| Vorticella ovifera Linnaeus, 1767 | Boltenia ovifera | 19 |
| Halocynthia owstoni Oka, 1906 | Halocynthia owstoni | 3382 |
| Bolteniopsis pacificus Monniot, 1989 | Bolteniopsis pacificus | 19 |
| Microcosmus pacificus Monniot & Monniot, 2001 | Microcosmus pacificus | 19 |
| Cynthia pallida Heller, 1878 | Herdmania pallida | 1733 |
| Rhabdocynthia pallida Sluiter, 1905 | Herdmania momus | 19 |
| Cynthia pallida billitonensis Sluiter, 1887 | Herdmania pallida | 1733 |
| Tethyum papillosum Gunnerus, 1765 | Halocynthia papillosa | 1134 |
| Culeolus parvus Millar, 1970 | Culeolus parvus | 19 |
| Microcosmus pedunculatus Pérès, | Microcosmus pedunculatus | 3477 |
| Pyura pennata Monniot & Monniot, 1991 | Herdmania pennata | 19 |
| Bolteniopsis perlucidus Monniot & Monniot, 1985 | Bolteniopsis perlucidus | 19 |
| Pyura picta Brewin, 1950 | Pyura picta | 3477 |
| Pyura pilosa Monniot & Monniot, 1974 | Pyura pilosa | 19 |
| Culeolus pinguis Monniot & Monniot, 1982 | Culeolus pinguis | 19 |
| Microcosmus planus Kott, 1975 | Microcosmus planus | 19 |
| Pyura polyducta Monniot & Monniot, 1989 | Herdmania polyducta | 1661 |
| Microcosmus polymorphus Heller, 1877 | Microcosmus polymorphus | 19 |
| Boltenia polyplacoderma Lambert, 1993 | Boltenia polyplacoderma | 1732 |
| Pyura praia Monniot & Monniot, 1968 | Pyura praia | 2673 |
| Bolteniopsis prenanti Harant, 1927 | Bolteniopsis prenanti | 19 |
| Microcosmus propinquus Herdman, 1882 | Microcosmus propinquus | 19 |
| Microcosmus psammiferus Monniot, 2001 | Microcosmus psammiferus | 19 |
| Cynthia pupa Savigny, 1816 | Microcosmus pupa | 1134 |
| Culeolus pyramidalis Ritter, 1907 | Culeolus pyramidalis | 19 |
| Culeolus quadrula Sluiter, 1904 | Culeolus quadrula | 19 |
| Pyura rapaformis Kott, 1990 | Pyura rapaformis | 19 |
| Culeolus recumbens Herdman, 1881 | Culeolus recumbens | 19 |
| Cratostigma regularis Monniot, 1963 | Cratostigma regularis | 19 |
| Heterostigma reptans Monniot & Monniot, 1963 | Heterostigma reptans | 19 |
| Halocynthia ritteri Oka, 1906 | Halocynthia ritteri | 3382 |
| Pyura robusta Hartmeyer, 1922 | Pyura robusta | 19 |
| Culeolus robustus Vinogradova, 1970 | Culeolus robustus | 19 |
| Cynthia rosea Sluiter, 1887 | Herdmania pallida | 1733 |
| Microcosmus sabatieri Roule, 1885 | Microcosmus sabatieri | 19 |
| Cynthia sacciformis Drasche, 1884 | Pyura sacciformis | 1134 |
| Pyura sansibarica Michaelsen, 1908 | Pyura sansibarica | 19 |
| Microcosmus santoensis Monniot & Monniot, 2003 | Microcosmus santoensis | 19 |
| Microcosmus savignyi Monniot, 1962 | Microcosmus savignyi | 19 |
| Pyura scortea Kott, 1985 | Pyura scortea | 19 |
| Heterostigma separ Ärnbäck, 1924 | Heterostigma separ | 19 |
| Bolteniopsis sessilis Monniot & Monniot, 1970 | Bolteniopsis sessilis | 19 |
| Pyura shiinoi Tokioka, 1949 | Pyura shiinoi | 3668 |
| Cratostigma simplex Millar, 1982 | Cratostigma simplex | 19 |
| Culeolus sluiteri Ritter, 1913 | Culeolus sluiteri | 19 |
| Ascidia spinifera Quoy & Gaimard, 1834 | Pyura spinifera | 1134 |
| Halocynthia spinosa Sluiter, 1905 | Halocynthia spinosa | 19 |
| Bathypera splendens Michaelsen, 1904 | Bathypera splendens | 19 |
| Pyura squamata Hartmeyer, 1911 | Pyura squamata | 19 |
| Microcosmus squamiger Michaelsen, 1927 | Microcosmus squamiger | 19 |
| Microcosmus stoloniferus Kott, 1952 | Microcosmus stoloniferus | 19 |
| Pyura styeliformis Monniot & Monniot, 2001 | Pyura styeliformis | 19 |
| Herdmania subpallida Nishikawa, 2002 | Herdmania subpallida | 19 |
| Culeolus suhmi Herdman, 1881 | Culeolus suhmi | 19 |
| Pyura tasmanensis Kott, 1985 | Pyura tasmanensis | 19 |
| Culeolus tenuis Vinogradova, 1970 | Culeolus tenuis | 19 |
| Ctenyura tetraplexa Kott, 1985 | Ctenyura tetraplexa | 19 |
| Culeolus thysanotus Sluiter, 1904 | Culeolus thysanotus | 19 |
| Pyura tongaea Monniot & Monniot, 1976 | Pyura tongaea | 19 |
| Ctenyura tortuosa Kott, 1985 | Ctenyura tortuosa | 19 |
| Hartmeyeria triangularis Ritter, 1913 | Hartmeyeria triangularis | 19 |
| Microcosmus trigonimus Millar, 1955 | Microcosmus trigonimus | 1756 |
| Pyura trita f. crinita Michaelsen, 1922 | Pyura crinita | 3651 |
| Microcosmus tuberculatus Kott, 1985 | Microcosmus tuberculatus | 19 |
| Pyura tunica Kott, 1969 | Pyura tunica | 19 |
| Pyura uatio Monniot, 1991 | Pyura uatio | 3477 |
| Pyura vannamei Monniot, 1994 | Pyura lignosa | 415 |
| Microcosmus vesiculosus Monniot, & Monniot, 2001 | Microcosmus vesiculosus | 19 |
| Cratostigma vestigialis Turon, 1988 | Cratostigma vestigialis | 19 |
| Pyura viarecta Kott, 1985 | Pyura viarecta | 19 |
| Microcosmus vulgaris Heller, 1877 | Microcosmus vulgaris | 19 |
| Culeolus wyville-thomsoni Herdman, 1881 | Culeolus wyville-thomsoni | 19 |