| Haploposthia monogonophora Westblad, 1946 | Aug 8, 1940 | 30 m | | no type specified, 2 specimens. |
| Aphanostoma macrospiriferum Westblad, 1946 | prior to 1946 | 30 m | mud, clay (Schlamm-Lehmboden) | no type locality specified, |
| Aphanostoma macrobursalium Westblad, 1946 | prior to 1946 | 25-35 m | clay (Lehmboden) | not common, no type locality specified. |
| Aphanostoma tenuissima Westblad, 1946 | 1941 | 30 m | | as of 1941 only one specimen found, no type locality specified. |
| Aphanostoma auritum flavescens Westblad, 1946 | prior to 1946 | | sand | |
| Convoluta rhammifera Westblad, 1946 | prior to 1946 | 20-30 m | | sporadic but nor rare. |
| Convoluta pusilla Westblad, 1946 | Aug 10, 1942 | 25-30 m | | rare, 1 specimen. |
| Convoluta stylifera Westblad, 1946 | Aug 8, 1942 | 20-30 m | clay with sand | rare. |
| Reisingeria hexoculatus Westblad, 1955 | Apr 23, 1943 | 30 m | | 1 specimen |
| Mecynostomum lutheri (Westblad, 1946) | 1956 or earlier | 10-15 m | Mud and clay with detritus | |
| Convoluta viridipunctata Westblad, 1946 | 1956 or earlier | 5-40 m | | |
| Vejdovskya suecica Luther, 1948 | 1956 or earlier | eulitoral - 20 m | mud, sand, detritus | |
| Hangethellia calceifera Karling, 1940 | 1956 or earlier | 0.5 - 10 m | mud, sand, detritus | |
| Brinkmanniella macrostomoides Luther, 1948 | 1956 or earlier | 0.5-36 m | | |
| Childia groenlandica (Levinsen, 1879) | 1956 or earlier | | | |
| Ulianinia mollissima Levinsen, 1879 | 1963 or earlier | | | Karling notes distribution of the species. Gullmaren (Bredungen, Dalsvik, Finsbobukten, Bökevik, Blåbärsholmen, Rödskären, Grötö). |
| Boreocelis filicauda Westblad, 1952 | 1935-1949 | 15-20 m | | Swedish west coast, namely Gullmar Fjord, where it proved to be not uncommon on mud bottom (Dalsvik, Essvik, off Blåbergsholmen etc.). |
| Archimonotresis limophila Meixner, 1938 | prior to 1960 | 8 - 10 m | Sand-Gyttja | Schwedische Westküste. Bohuslän: Kristineberg, Blåbärsholmen, (Karling). |