Collecting site
Prinzen-Insel (Prinzeninsel), Grosser Plöner See, Schleswig-Holstein, Germany
latitude: 54.150002     54°9'0.01"N
longitude: 10.416667     10°25'0"E
[Precision of location: Alexandria Digital Library (with NGA GNDB data)] 
[Site Named Here by name of island, bay, strait, lake, river, or stream, etc., named in source publication] 
Collected here:
| Provorticidorum sp. Rixen, 1961 | May 13, 1958 |  |  | Grosser Plöner See, Küstengrundwasser an der Spitze der Prinzeninsel (3 juv. Ex.). | 
| Mesostoma lingua (Abildgaard, 1789) | Jul 8, 1956 |  |  | Küstengrundwasser an der Spitze der Prinzeninsel (1 Ex.) |