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Alptavatn (Alftavatn), Iceland
latitude: 64.033333 64 02 00 N
longitude: -20.983334 20 59 00 W
Precision of location: Place-name in gazetteer
Site Named Here: By name of site (or city, etc.)
|Gieysztoria cuspidata||Jul 1-Aug2, 1937||5 specimens.|
|Castrella truncata||Jul 1-Aug2, 1937||in a slowly flowing streamlet and in bog pools near Laugarvatn.|
|Castrada borealis||Jul 1-Aug 2, 1937|