| Aphanostoma bimaculata Steinböck & Lanser, 1932 | 1932 or earlier | | tidal zone | |
| Amphiscolops virescens (Örsted AS, 1845) | 1879 or earlier | | | |
| Proaphanostoma variabile Steinböck & Lanser, 1932 | 1932 | intertidal | | Gezeitenzone. |
| Tetraposthia colymbetes Steinböck, 1931 | 1931 or earlier | tidal zone | | Gezeitenzone. |
| Paramacrostomum tricladoides Riedel, 1932 | 1926 | | coarse sand | Grobsand aus der Gezeitenzone nächst dem Tranhaus bei Godthaab. Reisinger & Steinböck expedition to Grönland 1926. |
| Oekiocolax plagiostomorum Reisinger, 1929 | 1929 or earlier | 80-120 m | | "Serpulidenknäuel" at 80-120 m. Kangeq near Godthaab. Parasite in Plagiostomum parasitorum |
| Oekiocolax plagiostomorum Reisinger, 1929 | May 15, 1926 | 80-120 m | | He and Steinböck collected specimens from a clump of Hydroids and Serpuliden brought up from 80 to 120 m in Godthaabfjordes near Kangeq. Several specimens found in Plagiostomum caecum Böhmig. |
| Haplovortex brevitubus (Luther, 1918) | 1918 or earlier | | | |
| Dalyellia ornata Hofsten N, 1907 | 1932 or earlier | | | in lake near Godthaab. |
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1932 or earlier | | | lakes and pools. |
| Byrsophlebs graffi Jensen, 1878 | 1932 or earlier | tidal zone - 110 m | | |
| Astrotorhynchus bifidus bifidus (McIntosh, 1874) | 1932 or earlier | tidal - 10 m | | |
| Proxenetes gracilis Graff, 1882 | 1932 or earlier | tidal - 100 m | | |
| Proxenetes flabellifer Jensen, 1878 | 1932 or earlier | tidal - 180 m | | |
| Proxenetes cochlear Graff, 1882 | 1932 or earlier | tidal zone | | |
| Promesostoma marmoratum marmoratum (Schultze, 1851) | 1879 or earlier | | | |
| Promesostoma marmoratum nudum Graff, 1905 | 1932 or earlier | tidal zone to 300 m | | |
| Promesostoma ovoideum ovoideum Graff, 1905 | 1932 or earlier | tidal zone to 15 m | | |
| Promesostoma ovoideum purum Graff, 1905 | 1932 or earlier | tidal to 120 m | | |
| Promesostoma lenticulatum (Schmidt, 1852) | 1932 or earlier | tidal to several meters | | |
| Promesostoma murmanica Graff, 1905 | 1932 or earlier | tidal to several meters | | |
| Acrochordonoposthia conica Reisinger, 1924 | 1932 or earlier | | | in damp moss. |
| Rhynchomesostoma rostratum (Müller, 1774) | 1932 or earlier | | | pools and lakes. |
| Typhloplanella halleziana (Vejdovsky, 1880) | 1932 or earlier | | | spring, in moss. |
| Castrada (Castrada) groenlandica Steinböck & Lanser, 1932 | 1932 or earlier | | | small lake. |
| Polycystis crocea (Fabricius, 1826) | 1932 or earlier | | | |
| Polycystis groenlandica Levinsen, 1879 | 1932 or earlier | intertidal | | |
| Polycystis assimilis (Levinsen, 1879) | 1932 or earlier | | | |
| Plagiostomum girardi (Schmidt, 1857) | 1932 or earlier | intertidal | | |
| Plagiostomum anocelis Brandtner, 1934 | 1932 or earlier | | | unknown depth. In a "Serpulidenknäuel". |
| Plagiostomum makroposthia Brandtner, 1934 | 1932 or earlier | 100 m | | |
| Plagiostomum petrophilum Brandtner, 1934 | 1932 or earlier | intertidal | | |
| Monocelis fusca Örsted, 1843 | 1932 or earlier | | | |
| Monocelis lineata (Müller, 1773) | 1932 or earlier | | | |
| Monocelis honorei Fügenschuh (Steinbock, 1932) | 1932 or earlier | | | "Serpulidenknäuel" from unknown depth. |
| Coleophora hirudo (Levinsen, 1879) | 1932 or earlier | | | lives on Chionoecetes opilio mouth parts. |
| Coleophora chionoecetis Fügenschuh (Steinbock, 1932) | 1932 or earlier | | | ecto-parasite on the eggs of Chionoecetes opilio L. |
| Coleophora levinseni Fügenschuh (Steinbock, 1932) | 1932 or earlier | intertidal | | |
| Promonotus longirostris Fügenschuh (Steinbock, 1932) | 1932 or earlier | intertidal | coarse sand | |
| Otomesostoma auditivum (Forel & du Plessis, 1874) | 1932 or earlier | | | lakes. |
| Diporoplana cnidophora Kohler (Steinbock, 1932) | 1932 or earlier | 100 m | | "Serpulidenknäuel". |
| Orthoplana borealis (Steinböck, 1931) | 1932 or earlier | intertidal to several meters | coarse, fine sand | |
| Plagiostomum petrophilum Brandtner, 1934 | 1926 | | rock | 3 specimens, south of Godthaab. |
| Plagiostomum porsildi Brandtner, 1934 | 1926 | | | 1 specimen among Lamaria roots. |
| Plagiostomum girardi groenlandica Levinsen, 1879 | 1926 | | | 1 specimen, tide pool near Godthaab. |
| Plagiostomum groenlandicum (Levinsen, 1879) | 1926 | | | several specimens, among Laminaria roots. |