Archimacrostomum Ferguson, 1954 (original description)
Archimacrostomum beaufortense (Ferguson, 1937) Ferguson, 1954 (source of synonymy)
Archimacrostomum brasiliensis (Marcus, 1952) Ferguson, 1954 (source of synonymy)
Archimacrostomum hustedi (Jones, 1944) Ferguson, 1954 (source of synonymy)
Axia Ferguson, 1954 accepted as
Macrostomum Schmidt, 1848 (original description)
Inframacrostomum Ferguson, 1954 accepted as
Macrostomum Schmidt, 1848 (original description)
Karlingia Ferguson, 1954 (original description)
Karlingia lutheri (Marcus, 1948) Ferguson, 1954 (new combination reference)
Macrostomum distinguenda Ferguson, 1954 accepted as
Macrostomum distinguendum Papi, 1951 (original description)
Macrostomum ruebushi kepneri Ferguson & Jones, 1940 accepted as
Macrostomum kepneri (Ferguson & Jones, 1940) (source of synonymy)
Promacrostomum paradoxicum Ferguson, 1954 accepted as
Promacrostomum paradoxum An der Lan, 1939 accepted as
Macrostomum paradoxum (An der Lan, 1939) (original description)
Taxonomic remark
Ferguson, 1954 misspelled the name as M. norfolkense. [details]