• Cricohalalaimus vagabundus Bussau, 1993
• Cylicolaimus magnus (Villot, 1875) de Man, 1889
• Cylicolaimus obtusidens Ditlevsen, 1926
• Deontostoma antarcticum (von Linstow, 1892) Filipjev, 1916
• Deontostoma arcticum (Ssaweljev, 1912) Filipjev, 1916
• Deontostoma aucklandiae (Ditlevsen, 1921) Platonova, 1962
• Deontostoma coptochilus Hope, 1977
• Deontostoma demani (Mawson, 1956) Hope, 1967
• Deontostoma jae (Inglis, 1964) Hope, 1974
• Deontostoma tridentum Leduc, 2013
• Halalaimus absconditus Bussau, 1993 (uncertain > taxon inquirendum)
• Halalaimus abyssus Bussau, 1993
• Halalaimus aedificandistudiosus Bussau, 1993
• Halalaimus amphidellus Vitiello, 1970 (uncertain > taxon inquirendum)
• Halalaimus amphistrius Vitiello, 1970 (uncertain > taxon inquirendum)
• Halalaimus arundinaceus Bussau, 1993 (uncertain > taxon inquirendum)
• Halalaimus comatus Wieser, 1953
• Halalaimus delamarei Vitiello, 1970
• Halalaimus egregius Bussau, 1993 (uncertain > taxon inquirendum)
• Halalaimus filicorpus Vitiello, 1970
• Halalaimus filum Gerlach, 1962
• Halalaimus longinquus Bussau, 1993 (uncertain > taxon inquirendum)
• Halalaimus longisetosus Hopper, 1963 (uncertain > taxon inquirendum)
• Halalaimus lutarus Vitiello, 1970
• Halalaimus meyersi Wieser & Hopper, 1967
• Halalaimus monstrocaudatus Vitiello, 1970
• Halalaimus oblongus Bussau, 1993
• Halalaimus pachyodoroides Vitiello, 1970
• Halalaimus praestans Bussau, 1993 (uncertain > taxon inquirendum)
• Halalaimus shinkai Shimada, Takeda, Tsune & Murakami, 2020
• Halalaimus turbidus Vitiello, 1970
• Leptosomatum abyssale Allgén, 1951
• Leptosomatum bathybium Allgén, 1954
• Litinium aceratus (Vitiello, 1970) Martelli, Lo Russo, Villares & Pastor de ward, 2017
• Litinium aequale Cobb, 1920
• Litinium bananum Gerlach, 1956
• Litinium longicaudatum (Vitiello, 1970) Martelli, Lo Russo, Villares & Pastor de ward, 2017
• Litinium obtusilobus Bussau, 1993
• Litinium paramontemari (Vitiello, 1970) Martelli, Lo Russo, Villares & Pastor de ward, 2017
• Metacylicolaimus filicaudatus (Ditlevsen, 1926) Stekhoven, 1946
• Nemanema rotundicaudatum (Ditlevsen, 1926) Filipjev, 1946
• Oxystomina hakureiae Shimada, Takeda, Tsune & Murakami, 2020
• Oxystomina inexpugnabilis Bussau, 1993
• Oxystomina oxycaudata (Ditlevsen, 1926) Filipjev, 1921
• Oxystomina pulchella Vitiello, 1970
• Parironus javaensis Micoletzky, 1930
• Platycomopsis cobbii Ditlevsen, 1926
• Platycomopsis nuchapilosa Vitiello, 1970
• Platycomopsis nuchapilosus Vitiello, 1970 accepted as Platycomopsis nuchapilosa Vitiello, 1970
• Pseudocella (Corythostoma) kreisi (Wieser, 1953) Wieser, 1956
• Pseudocella elegans (Ditlevsen, 1926) Wieser, 1953
• Pseudocella obliqua (Ditlevsen, 1926) Wieser, 1953
• Pseudocella tenuis Filipjev, 1946
• Synonchoides galatheae (Wieser, 1956) Platonova, 1970
• Synonchus alisonae Warwick, 1973
• Synonchus fasciculatus Cobb, 1893
• Syringonomus dactylatus Hope, 1988
• Syringonomus typicus Hope & Murphy, 1969
• Thalassironus bisetosus Vitiello, 1970
• Thalassironus multidentatus Bussau, 1993
• Thalassoalaimus aceratus Vitiello, 1970 accepted as Litinium aceratus (Vitiello, 1970) Martelli, Lo Russo, Villares & Pastor de ward, 2017
• Thalassoalaimus brevicaudatus Vitiello, 1970 (uncertain > taxon inquirendum)
• Thalassoalaimus longicaudatus Vitiello, 1970 accepted as Litinium longicaudatum (Vitiello, 1970) Martelli, Lo Russo, Villares & Pastor de ward, 2017
• Thalassoalaimus mediterraneus Vitiello, 1970
• Thalassoalaimus montemari Wieser, 1953 (uncertain > taxon inquirendum)
• Thalassoalaimus paramontemari Vitiello, 1970 accepted as Litinium paramontemari (Vitiello, 1970) Martelli, Lo Russo, Villares & Pastor de ward, 2017
• Thoracostoma bruuni Wieser, 1956
• Thoracostoma demani Mawson, 1956 accepted as Deontostoma demani (Mawson, 1956) Hope, 1967
• Thoracostoma elongatum Ditlevsen, 1926 accepted as Deontostoma arcticum (Ssaweljev, 1912) Filipjev, 1916
• Thoracostoma galatheae Wieser, 1956 accepted as Synonchoides galatheae (Wieser, 1956) Platonova, 1970
• Thoracostoma kreisi (Wieser, 1953) accepted as Pseudocella (Corythostoma) kreisi (Wieser, 1953) Wieser, 1956
• Thoracostoma schizoepistylium Mawson, 1958
• Thoracostoma vallini Allgén, 1928 accepted as Thoracostoma vallini Allgén, 1959
• Thoracostoma vallini Allgén, 1959
• Wieseria leptura Vitiello, 1972