Engstlensee, Switzerland
latitude: 46.783333     46 47 00 N
longitude: 8.366667     008 22 00 E
[Precision of location: Alexandria Digital Library (with NGA GNDB data)] 
[Site Named Here by name of site (or city, etc.)] 
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1911 or earlier | Drei kleine Seen zwischen Melchsee-Frutt und Engstlen-Alp (1980 m). | 
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