线纽虫属
下属物种

本属包括以下物种：
Lineus acutifrons Southern, 1913
Lineus albifrons Coe, 1934
Lineus albocinctus Verrill, 1900
Lineus albonasus Verrill, 1900
Lineus alienus Bürger, 1895
白额纵沟纽虫 Lineus alborostratus Takakura
Lineus anellatus Monastero, 1930
Lineus angulosus Korotkevich, 1978
Lineus arenicola (Verrill, 1873)
Lineus atradentis Korotkevich, 1978
Lineus atrocaeruleus (Schmarda, 1859)
Lineus auripunctatus (Grube, 1855)
Lineus aurostriatus (Bürger, 1890)
澳洲线纽虫 Lineus australis (Punnett, 1900)
Lineus autrani Joubin, 1905
Lineus bergendali Senz, 1996
Lineus binigrilinearis Gibson, 1990
Lineus bioculatus Sundberg & Gibson, 1995
双斑线纽虫 Lineus bipunctatus Takakura, 1898
Lineus bonaerensis Moretto, 1971
Lineus boutani (Joubin, 1893)
Lineus cancelli Iwata, 1954
Lineus capensis Wheeler, 1940
Lineus caputornatus Takakura, 1898
Lineus cinereus Punnett, 1903
Lineus cingulatus (Stimpson, 1855)
Lineus clandestinus Krämer, Schmidt, Podsiadlowski, Beckers, Horn & Von Döhren, 2016
Lineus coccinus Bürger, 1892
Lineus collaris (Schmarda, 1859)
Lineus coloratus (Bürger, 1890)
Lineus copus Corrêa, 1958
Lineus crosslandi Punnett & Cooper, 1909
Lineus desori Schmidt, 1946
Lineus dohrnii (Hubrecht, 1879)
Lineus fischeri Senz, 1997
Lineus flammeus Monastero, 1930
Lineus flavescens Coe, 1904
Lineus frauenfeldi Senz, 1997
青纵沟纽虫 Lineus fuscoviridis Takakura, 1898
Lineus galbanus (Bürger, 1890)
Lineus gesserensis (O.F.Müller, 1774)
Lineus gilbus Bürger, 1892
Lineus gilviceps Sundberg & Gibson, 1995
Lineus glaucus (Bürger, 1890)
Lineus grubei (Hubrecht, 1879)
Lineus hancocki Punnett & Cooper, 1909
Lineus hiatti Coe, 1947
Lineus hubrechti (Langerhans, 1880)
印度线纽虫 Lineus indicus Punnett & Cooper, 1909
Lineus insignis Senz, 1993
Lineus iota Joubin, 1902
Lineus islandicus Friedrich, 1958
Lineus kennelii Bürger, 1892
Lineus kolaensis Ushakov, 1928
Lineus kristinebergensis Gering, 1912
Lineus lacteus (Rathke, 1843)
Lineus lacticapitatus Wheeler, 1940
Lineus linearis Montagu, 1808
Lineus lobianki Bürger, 1892
Lineus longifissus
巨纵沟纽虫 Lineus longissimus (Gunnerus, 1770)，体长可达55米，是世界上体长最长的动物之一。
Lineus marisalbi Ushakov, 1926
Lineus mascarensis Punnett & Cooper, 1909
Lineus molochinus Bürger, 1892
Lineus monolineatus Staub, 1900
Lineus nigrobrunneus Bergendal, 1903
Lineus nigrofuscus (Stimpson, 1857)
Lineus nigrostriatus Iwata, 1954
日本线纽虫 Lineus nipponensis Senz, 2001
Lineus obscurus (Desor, 1848)
Lineus oculatus Montagu, 1808
Lineus orientalis Punnett & Cooper, 1901
Lineus ornatus Wheeler, 1940
Lineus pallidus Verrill, 1879
Lineus parvulus Bürger, 1892
Lineus patulus Isler, 1900
Lineus pictifrons Coe, 1904
Lineus picus Corrêa, 1958
Lineus polyophthalmus (Schmarda, 1859)
Lineus pseudoruber (Friedrich, 1935)
Lineus psittacinus (Bürger, 1890)
Lineus quadratus Korotkevich, 1978
Lineus ramosus Isler, 1900
Lineus rovinjensis Senz, 1995
Lineus ruber (Müller, 1774)
Lineus rubescens Coe, 1904
Lineus rufocaudatus Bürger, 1892
Lineus sainthilairi Ushakov, 1926
Lineus sanguineus (Rathke, 1799)
Lineus scandinaviensis Punnett, 1903
Lineus schultzei Senz, 2001
Lineus sowerbyi Senz, 2001
Lineus spatiosus Iwata, 1954
Lineus stigmatus Coe, 1951
Lineus subcingulatus Takakura, 1898
Lineus trilobulatus Korotkevich, 1978
Lineus truncatus (Hubrecht, 1887)
Lineus turqueti Joubin, 1905
Lineus variegatus Chapuis, 1886
杂色线纽虫 Lineus versicolor Bürger, 1892
绿线纽虫 Lineus viridis (Müller, 1774)
Lineus vittatus (Quoy & Gaimard, 1833)
Lineus viviparus Isler, 1900
Ophiocephalus heterorrhochmus Schmarda, 1859
Ophyocephalus murenoides Delle Chiaje, 1829
本属包括以下物种：