Acanthodrilus africanus Beddard, 1897 accepted as Chilota africanus (Beddard, 1897) (basis of record)
Acanthodrilus albus Beddard, 1895 (basis of record)
Acanthodrilus annectens Beddard, 1888 (basis of record)
Acanthodrilus antarcticus Beddard, 1889 accepted as Octochaetus antarcticus (Beddard, 1889) (basis of record)
Acanthodrilus aquarumdulcium Beddard, 1893 accepted as Microscolex aquarumdulcium (Beddard, 1893) (basis of record)
Acanthodrilus arenarius Beddard, 1897 accepted as Acanthodrilus arundinis Beddard, 1897 accepted as Eodrilus arundinis (Beddard, 1897) accepted as Eodriloides arundinis (Beddard, 1897) (basis of record)
Acanthodrilus arundinis Beddard, 1897 accepted as Eodrilus arundinis (Beddard, 1897) accepted as Eodriloides arundinis (Beddard, 1897) (basis of record)
Acanthodrilus australis Michaelsen, 1889 (basis of record)
Acanthodrilus beddardi Horst, 1888 accepted as Benhamia beddardi (Horst, 1888) (basis of record)
Acanthodrilus bicinctus Beddard, 1895 accepted as Chilota bicincta (Beddard, 1895) (basis of record)
Acanthodrilus braueri Michaelsen, 1897 accepted as Maheina braueri (Michaelsen, 1897) (basis of record)
Acanthodrilus canalanus Michaelsen, 1913 (basis of record)
Acanthodrilus capensis Beddard, 1885 accepted as Chilota capensis (Beddard, 1885) (basis of record)
Acanthodrilus carneus Beddard, 1895 (basis of record)
Acanthodrilus cavaticus Michaelsen, 1913 (basis of record)
Acanthodrilus chabaudi Jamieson & Bennett, 1979 (basis of record)
Acanthodrilus chevalieri Jamieson & Bennett, 1979 (basis of record)
Acanthodrilus chilensis Beddard, 1895 (basis of record)
Acanthodrilus cingulatus Beddard, 1895 (basis of record)
Acanthodrilus coneensis Michaelsen, 1913 (basis of record)
Acanthodrilus corralensis Beddard, 1895 (basis of record)
Acanthodrilus crassus Beddard, 1892 (basis of record)
Acanthodrilus dalei Beddard, 1890 accepted as Chilota dalei (Beddard, 1890) (basis of record)
Acanthodrilus decipiens Beddard, 1895 (basis of record)
Acanthodrilus dissimilis Beddard, 1885 accepted as Maoridrilus dissimilis (Beddard, 1885) (basis of record)
Acanthodrilus eremius Spencer, 1896 (basis of record)
Acanthodrilus excavatus Beddard, 1897 accepted as Chilota excavatus (Beddard, 1897) accepted as Parachilota excavatus (Beddard, 1897) (basis of record)
Acanthodrilus exul Rosa, 1897 (basis of record)
Acanthodrilus fabresi Jamieson & Bennett, 1979 (basis of record)
Acanthodrilus falcatus Beddard, 1897 accepted as Acanthodrilus arundinis Beddard, 1897 accepted as Eodrilus arundinis (Beddard, 1897) accepted as Eodriloides arundinis (Beddard, 1897) (basis of record)
Acanthodrilus falclandicus Beddard, 1893 accepted as Microscolex falclandicus (Beddard, 1893) (basis of record)
Acanthodrilus foanus Michaelsen, 1913 (basis of record)
Acanthodrilus georgianus Michaelsen, 1888 accepted as Notiodrilus georgianus (Michaelsen, 1888) (basis of record)
Acanthodrilus hamiger Michaelsen, 1911 (basis of record)
Acanthodrilus haplocystis Benham, 1901 accepted as Eodrilus haplocystis (Benham, 1901) accepted as Notiodrilus haplocystis (Benham, 1901) (basis of record)
Acanthodrilus hoghis Jamieson & Bennett, 1979 (basis of record)
Acanthodrilus humboldti Michaelsen, 1913 (basis of record)
Acanthodrilus ignambii Michaelsen, 1913 (basis of record)
Acanthodrilus ilsleianus Pickford, 1927 accepted as Eodriloides ilsleianus (Pickford, 1927) (basis of record)
Acanthodrilus kerguelenensis Michaelsen, 1891 (basis of record)
Acanthodrilus kermadecensis K. Lee, 1953 (basis of record)
Acanthodrilus lacuum Michaelsen, 1913 (basis of record)
Acanthodrilus layardi Beddard, 1886 accepted as Acanthodrilus ungulatus Perrier, 1872 (basis of record)
Acanthodrilus longicystis Jamieson & Bennett, 1979 (basis of record)
Acanthodrilus lucifuga Beddard, 1897 accepted as Chilota lucifuga (Beddard, 1897) accepted as Chilota lucifugus (Beddard, 1897) (basis of record)
Acanthodrilus macquariensis Beddard, 1896 accepted as Microscolex macquariensis (Beddard, 1896) (basis of record)
Acanthodrilus magellanicus Beddard, 1895 (basis of record)
Acanthodrilus majungianus Michaelsen, 1897 (basis of record)
Acanthodrilus mareensis Michaelsen, 1913 (basis of record)
Acanthodrilus minutus Beddard, 1895 (basis of record)
Acanthodrilus multiporus Beddard, 1885 accepted as Octochaetus multiporus (Beddard, 1885) (basis of record)
Acanthodrilus natalicius Michaelsen, 1913 (basis of record)
Acanthodrilus neglectus Beddard, 1887 accepted as Acanthodrilus dissimilis Beddard, 1885 accepted as Maoridrilus dissimilis (Beddard, 1885) (basis of record)
Acanthodrilus novaezelandiae Beddard, 1885 (basis of record)
Acanthodrilus obtusus Perrier, 1872 (basis of record)
Acanthodrilus occidentalis Beddard, 1895 accepted as Notiodrilus occidentalis (Beddard, 1895) (basis of record)
Acanthodrilus oubatcheanus Michaelsen, 1913 (basis of record)
Acanthodrilus paludosus Beddard, 1893 (basis of record)
Acanthodrilus paniensis Michaelsen, 1913 (basis of record)
Acanthodrilus paripapillatus Jamieson & Bennett, 1979 (basis of record)
Acanthodrilus parkeri Beddard, 1895 (basis of record)
Acanthodrilus peringueyi Michaelsen, 1913 accepted as Eodriloides peringueyi (Michaelsen, 1913) (basis of record)
Acanthodrilus perrieri Michaelsen, 1913 (basis of record)
Acanthodrilus photodilus Beddard, 1897 accepted as Chilota photodilus (Beddard, 1897) accepted as Parachilota photodilus (Beddard, 1897) (basis of record)
Acanthodrilus platei Michaelsen, 1898 (basis of record)
Acanthodrilus platurus Michaelsen, 1892 (basis of record)
Acanthodrilus platyurus Beddard, 1895 accepted as Acanthodrilus platurus Michaelsen, 1892 (basis of record)
Acanthodrilus plumbeus Beddard, 1895 (basis of record)
Acanthodrilus purcelli Beddard, 1897 accepted as Chilota purcelli (Beddard, 1897) (basis of record)
Acanthodrilus purpureus Beddard, 1895 accepted as Chilota bicincta (Beddard, 1895) (basis of record)
Acanthodrilus putablensis Beddard, 1895 (basis of record)
Acanthodrilus rosae Beddard, 1889 (basis of record)
Acanthodrilus rouxi Michaelsen, 1913 (basis of record)
Acanthodrilus ruber Jamieson & Bennett, 1979 (basis of record)
Acanthodrilus sarasini Michaelsen, 1913 (basis of record)
Acanthodrilus schlegelii Horst, 1884 accepted as Benhamia schlegelii (Horst, 1884) (basis of record)
Acanthodrilus schmardae Beddard, 1892 (basis of record)
Acanthodrilus scioanus Rosa, 1888 accepted as Benhamia scioana (Rosa, 1888) (basis of record)
Acanthodrilus sclateri Beddard, 1897 (basis of record)
Acanthodrilus silvester Michaelsen, 1914 (basis of record)
Acanthodrilus simulans Beddard, 1895 (basis of record)
Acanthodrilus smithi Beddard, 1893 (basis of record)
Acanthodrilus spegazzinii Rosa, 1890 accepted as Kerria spegazzinii (Rosa, 1890) accepted as Eukerria stagnalis (Kinberg, 1866) (basis of record)
Acanthodrilus subatscheanus Michaelsen, 1913 (basis of record)
Acanthodrilus tamajusi Eisen, 1896 (basis of record)
Acanthodrilus tecumumami Michaelsen, 1911 (basis of record)
Acanthodrilus ulrici Michaelsen, 1923 (basis of record)
Acanthodrilus valdiviensis Beddard, 1895 (basis of record)
Acanthodrilus vasliti Eisen, 1896 (basis of record)
Acanthodrilus vataliens Michaelsen, 1913 (basis of record)
Acanthodrilus verticillatus Perrier, 1872 accepted as Kynotus verticillatus (Perrier, 1872) (basis of record)
Acanthodrilus voeltzkowi Michaelsen, 1897 (basis of record)
Acanthodrilus yateensis Michaelsen, 1913 (basis of record)
Aceeca Blakemore, 2000 (basis of record)
Aceeca dee Blakemore, 2000 (basis of record)
Acestus Leidy, 1852 (basis of record)
Acestus hyalinus Leidy, 1852 (basis of record)
Acestus spiralis Leidy, 1852 (basis of record)
Achaeta aberrans Nielsen & Christensen, 1961 (basis of record)
Achaeta abulba Graefe, 1989 (basis of record)