| Aphanostoma rhomboides Jensen, 1878 | 1946 or earlier | intertidal zone to 20 m deep | deep shifting sands and sandy clay |  | 
| Childia groenlandica (Levinsen, 1879) | Jul-Aug 2003 | 30-60 m | mud |  | 
| Plagiostomum nostrum Westblad, 1956 | Aug 4, 1938 | 40 m |  | 4 specimens | 
| Polyposthia similis Bergendal, 1893 | prior to 1893 | sublittoral | mud |  | 
| Discocelides langi Bergendal, 1893 | prior to 1893 |  |  |  | 
| Mecynostomum auritum (Schultze, 1851) | prior to 1975 | shallow | sand, mud |  | 
| Phonorhynchella biarcuata Karling, 1956 | 1956 or earlier | 35 m | clay |  | 
| Psammopolycystis bredungensis Karling, 1956 | 1956 or earlier | 35 m | clay | Kristineberg, near Bredungen, St. Bornö and Gasörännan in Lehmboden (loamy clay). | 
| Typhlopolycystis coeca Karling, 1956 | 1956 or earlier | 35 m | clay (Lehmboden) | Kristineberg, near Bredungen. | 
| Pseudostomum arenarium Meixner, 1938 | Aug 8, 1939 | 30-35 m | Zostera-Amphiura |  | 
| Pseudostomum arenarium Meixner, 1938 | Aug 13, 1947 | 8 m | diatom bottom |  | 
| Gonostomula anocelis Westblad, 1955 | Jul 24, 1940 | 30 m |  | 1 specimen | 
| Gonostomula anocelis Westblad, 1955 | Aug 7, 1945 | 40 m |  | 4 specimens | 
| Mecynostomum minimum (Westblad, 1946) | 1951 |  |  |  | 
| Proxenetes simplex Luther, 1948 | prior to 1948 |  | mud, loam |  | 
| Childia vivipara Tekle, Raikova & Jondelius 2006 | 2003-2005? | 30-60 m | mud | collected by dredge | 
| Ulianinia mollissima Levinsen, 1879 | 1963 or earlier |  |  | Karling notes distribution of the species.  Gullmaren (Bredungen). | 
| Microstomum jenseni Riedel, 1932 | 1953 or earlier |  |  |  | 
| Utelga chelifera (Karling, 1954) | Aug 7, 1945 |  |  |  | 
| 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.). | 
| Einarella argillophila Luther, 1948 | Aug 7, 1945 | 40 m | clay | Zoologischen Station Kristineberg, Gullmaren: St. Bornö-Bredungen, Stat. 4, cca 40 m tief, Tonboden | 
| Maehrenthalia coeca Luther, 1948 | Aug 7, 1945 | 30 - 35 m | clay | Die mir vorliegen Exemplare, wie auch WESTBLADs Skizzen, stammen von der zoologischen Station Kristineberg, Gullmarsfjorden, Bredungen (Statt 4.) | 
| Odontorhynchus aculeatus Karling, 1956 |  | 35m | loam with Funiculina |  |