|   | 
site | 
site # (info) | 
collection date | 
kind | 
depth | 
substrate | 
salin | 
comments | 
reference | 
| A | 
Allschwil (Allschwil-Switzerland), Switzerland | 
1951
  map | prior to 1894 | 
  | 
  | 
  | 
  | 
  | 
Fuhrmann O (1894): 218-222, 227 | 
| B | 
Neudorf, Switzerland | 
1949
  map | prior to 1894 | 
  | 
  | 
  | 
  | 
marsh | 
Fuhrmann O (1894): 218-222, 227 | 
| C | 
Kleinhüningen near Basel, Switzerland | 
1959
  map | prior to 1894 | 
  | 
  | 
  | 
  | 
marsh | 
Fuhrmann O (1894): 218-222, 227 | 
| D | 
Saint-Aubin-Fosse-Louvain, Louvain, France | 
1966
  map | 1869 | 
  | 
  | 
  | 
  | 
  | 
Beneden E van (1870): 116 | 
| E | 
Zoologischen Station Tvärminne (Tvarminne), Hanko (Hango, Hangö), Finnish Bay, Finland | 
1378
  map | prior to 1905 | 
  | 
  | 
  | 
brackish | 
around the Zool. Station Tvärminne.  In shallow areas. | 
Luther A (1905): 4 | 
| F | 
Chadjibej Liman (Khadzhybeys’kyy Lyman, Gadzhibeyskiy Liman, Gadzhibeyskiy Liman, Hadzhibeiski Lagoon), Ukraine | 
3927
  map | 1900 or earlier | 
  | 
  | 
  | 
brackish | 
in Chadjibej Liman with saline concentration of 5-7. | 
Butschinsky P (1900): abstract | 
| G | 
Warszawa (Warschau, Varsavia, Varshava, Warsaw, Varsovie), Poland | 
2674
  map | 1891 or earlier | 
  | 
  | 
  | 
  | 
near Warsaw. | 
Wassilieff E (1891): abstract | 
| H | 
Langskar (Långskär), Finish Gulf, Finland | 
878
  map | 1902 or earlier | 
  | 
  | 
  | 
  | 
Das Vorkommen dieser Art bei Helsingfors habe ich früher gelegentlich erwähnt.  Auch in einem Tümpel (N:o 7) auf der Insel Långskår bei Tvårminne habe M. hytrix gefunden. | 
Luther A (1902): 43;  from Luther 1904 (citation)- p. 4 | 
| I | 
Greifswald, Germany | 
3485
  map | 1848 or earlier | 
  | 
  | 
  | 
  | 
Ich habe wie O. Fabricius diese von anderen Forschern nur im süssen Wasser beobachtete Art sehr häufig in der Ostsee am flachen Strande und in einer Tiefe von einigen Fussen zusammen mit Monocelis agilis, Microstomum lineare und Vortex balticus anget | 
Schultze Max (1851): 58 | 
| J | 
San Rossore Regional Park, near Pisa, Italy | 
7313
  map | May 2010 | 
  | 
  | 
  | 
  | 
  | 
Ramm SA, Schlatter A, Poirier M, Schärer L (2015):  | 
| K | 
Elbe River, near Hamburg-Harburg, Germany | 
530
  map | 1903 or earlier | 
  | 
  | 
  | 
  | 
  | 
Volk R (1903):  |