Acanthodrilus haplocystis Benham, 1901 accepted as Eodrilus haplocystis (Benham, 1901) accepted as Notiodrilus haplocystis (Benham, 1901) (new combination reference)
Clitellio abjornseni Michaelsen, 1907 accepted as Coralliodrilus abjornseni (Michaelsen, 1907) (original description)
Didymogaster Fletcher, 1887 accepted as Digaster Perrier, 1872 (additional source)
Digaster Perrier, 1872 (additional source)
Diporochaeta Beddard, 1890 (additional source)
Eodrilus Michaelsen, 1907 (original description)
Eodrilus cornigravei Michaelsen, 1907 (original description)
Fletcherodrilus Michaelsen, 1891 (additional source)
Megascolex Templeton, 1844 (additional source)
Megascolex albanyensis Michaelsen, 1907 (original description)
Megascolex bistichus Michaelsen, 1907 (original description)
Megascolex colliensis Michaelsen, 1907 (original description)
Megascolex collinus Michaelsen, 1907 (original description)
Megascolex galei Michaelsen, 1907 (original description)
Megascolex harveyensis Michaelsen, 1907 (original description)
Megascolex imparicystis Michaelsen, 1907 (original description)
Megascolex monostichus Michaelsen, 1907 (original description)
Megascolex purpurascens Michaelsen, 1907 (original description)
Megascolex torbayensis Michaelsen, 1907 (original description)
Megascolex whistleri Michaelsen, 1907 (original description)
Megascolides McCoy, 1878 (additional source)
Megascolides nokanenaensis Michaelsen, 1907 (original description)
Michaelsena normani Michaelsen, 1907 accepted as Marionina normani (Michaelsen, 1907) (original description)
Michaelsena principissae Michaelsen, 1907 accepted as Grania principissae (Michaelsen, 1907) (original description)
Microscolex aucklandicus (Benham, 1903) accepted as Notiodrilus aucklandicus Benham, 1903 (basis of record)
Microscolex campbellianus (Benham, 1905) accepted as Notiodrilus campbellianus Benham, 1905 (basis of record)
Notoscolex Fletcher, 1887 (additional source)
Notoscolex hortensis Michaelsen, 1907 (original description)
Notoscolex maecenatis Michaelsen, 1907 (original description)
Notoscolex modestus Michaelsen, 1907 (original description)
Notoscolex prestonianus Michaelsen, 1907 (original description)
Notoscolex rubescens Michaelsen, 1907 (original description)
Notoscolex suctorius Michaelsen, 1907 (original description)
Pelodrilus darlingensis Michaelsen, 1907 accepted as Haplotaxis africanus (Michaelsen, 1905) accepted as Pelodrilus africanus Michaelsen, 1905 (original description)
Pelodrilus hologynus Michaelsen, 1907 accepted as Hologynus hologynus (Michaelsen, 1907) (original description)
Perionychella Michaelsen, 1907 (original description)
Perionyx Perrier, 1872 (additional source)
Perissogaster Fletcher, 1887 accepted as Digaster Perrier, 1872 (additional source)
Pheretima Kinberg, 1866 (additional source)
Pheretima heterochaeta (Michaelsen, 1891) accepted as Amynthas heterochaetus (Michaelsen, 1891) (additional source)
Plutellus Perrier, 1873 (additional source)
Plutellus asymmetricus Michaelsen, 1907 accepted as Graliophilus asymmetricus (Michaelsen, 1907) (original description)
Plutellus blackwoodianus Michaelsen, 1907 accepted as Graliophilus blackwoodianus (Michaelsen, 1907) (original description)
Plutellus carneus Michaelsen, 1907 accepted as Graliophilus carneus (Michaelsen, 1907) (original description)
Plutellus levis Michaelsen, 1907 accepted as Graliophilus levis (Michaelsen, 1907) (original description)
Plutellus mendilai Michaelsen, 1907 accepted as Graliophilus mendilai (Michaelsen, 1907) (original description)
Plutellus murrayensis Michaelsen, 1907 accepted as Graliophilus murrayensis (Michaelsen, 1907) (original description)
Plutellus schumanni Michaelsen, 1907 accepted as Graliophilus schumanni (Michaelsen, 1907) (original description)
Plutellus strelitzi Michaelsen, 1907 accepted as Graliophilus strelitzi (Michaelsen, 1907) (original description)
Plutellus termitophilus Michaelsen, 1907 accepted as Graliophilus termitophilus (Michaelsen, 1907) (original description)
Plutellus wellingtonianus Michaelsen, 1907 accepted as Graliophilus wellingtonianus (Michaelsen, 1907) (original description)
Plutellus woodwardi Michaelsen, 1907 accepted as Graliophilus woodwardi (Michaelsen, 1907) (original description)
Pontodrilus Perrier, 1874 (additional source)
Pontodrilus albanyensis Michaelsen, 1907 accepted as Pontodrilus litoralis (Grube, 1855) (original description)
Pontodrilus ephippiger Rosa, 1898 (additional source)
Spenceriella Michaelsen, 1907 (original description)
Woodwardia Michaelsen, 1907 accepted as Woodwardiella Stephenson, 1925 (original description)
Woodwardia affinis Michaelsen, 1907 accepted as Woodwardiella affinis (Michaelsen, 1907) (original description)
Woodwardia callichaeta Michaelsen, 1907 accepted as Woodwardiella callichaeta (Michaelsen, 1907) (original description)
Woodwardia libferti Michaelsen, 1907 accepted as Woodwardiella libferti (Michaelsen, 1907) (original description)
Woodwardia molaeleonis Michaelsen, 1907 accepted as Woodwardiella molaeleonis (Michaelsen, 1907) (original description)

 Etymology

 for Clitellio abjornseni Michaelsen, 1907

There is no etymological explanation in the Original paper. However, one of the specimens collected in Fremantle on ... [details]

 Etymology

 for Woodwardia Michaelsen, 1907

named after Mr. Bernhard Woodward, director of Museum in Perth [details]

 Type material

 for Notoscolex hortensis Michaelsen, 1907

Morgan (1987) probably misinterpreted Michaelsens' (1907) record of Lion Mill as Lionel Mill (?) and even gave ... [details]

 Type material

 for Pelodrilus darlingensis Michaelsen, 1907

Species was described from Station 137, Collie: im sumpfigen Boden am rande eines bach [=in marshy soil at the edge ... [details]