| Childia submaculatum (Westblad, 1942) | prior 1975 |  |  |  | 
| Childia brachyposthium (Westblad, 1942) | 1956 or earlier | 35 m | mud (Schlammböden) |  | 
| Microstomum melanophthalmum Steinböck, 1933 | 1933 or earlier |  | stones | found under algae.  1 specimen. | 
| Proporus venenosus (Schmidt, 1852) | 1933 or earlier | 3 m |  | algae and mussel shells, rocks. | 
| Aphanostoma diversicolor Ørsted, 1845 | 1933 or earlier |  |  | in algae north of Isola S. Andrea. | 
| Convoluta convoluta (Abildgaard, 1806) | 1933 or earlier |  |  | Algae. | 
| Convoluta convoluta (Abildgaard, 1806) | 1933 or earlier | 10 m |  | rough rocks. | 
| Convoluta sordida Graff, 1882 | 1933 or earlier |  | rocks, shells, algae | north of Isola S. Andrea. | 
| Promesostoma marmoratum (Schultze, 1851) | 1933 or earlier |  | rocks, mussel shell |  | 
| Promesostoma solea (Schmidt, 1857) | 1933 or earlier |  |  | Algae, south of Isola S. Andrea. | 
| Plagiostomum girardi (Schmidt, 1857) | 1933 or earlier |  | rocks, mussel shells |  | 
| Plagiostomum maculatum Graff, 1882 | 1933 or earlier |  |  | in Algae. | 
| Plagiostomum reticulatum (Schmidt, 1852) | 1933 or earlier |  |  | 1 specimen, in Algae. | 
| Plagiostomum ponticum Pereyaslawzewa, 1892 | 1933 or earlier |  |  | 1 specimen, in Algae. | 
| Plagiostomum benedeni (Schmidt, 1852) | 1933 or earlier |  |  | few specimens, in Algae. | 
| Vorticeros luteum Hallez, 1879 | 1933 or earlier |  |  | in Algae. | 
| Leptoplana tremellaris (Müller, 1773) | 1933 or earlier | 15 m | stone, mussel shell |  | 
| Hoploplana insignis (Lang, 1884) | 1933 or earlier |  | coarse stone | 2 specimens, algae covered stones. | 
| Plagiostomum vittatum (Frey & Leuckart, 1847) | 1933 or earlier |  |  | 1 specimen, in algae. | 
| Allostoma capitatum (Uljanin, 1870) | 1933 or earlier |  |  | 2 specimen, in algae. |