Collecting site

Langholmen (Långholmen, Langholm, Långholm), Finland
[there are several islands in Finland named Långholmen, not sure this was the location that Luther 1960 referenced, although the coordinates are closest to the Zoolog. Station Tvarminne]
latitude: 59.883301     59°52'59.88"N
longitude: 22.549999     22°32'60"E

[Precision of location: Alexandria Digital Library (with NGA GNDB data)]
[Site Named Here by name of site (or city, etc.)]

Collected here:

Macrostomum balticum Luther, 1947	prior to 1960	2.5-3.0 m	sand, gyttja	between Vikarskär and Långholmen. All specimens found between June and August.
Bresslauilla relicta Reisinger, 1929	1961 or earlier		humus, sand	meadow bank north of Bönholmen-Långholmen, ca 40 cm ü.d. Strong freshwater influence at sea level.
Provortex pallidus Luther, 1948	1962 or earlier
Provortex karlingi Ax, 1951	1962 or earlier			between Långholmen and Vikarskär.
Planaria torva (Müller, 1773)	1961 or earlier			Einwärts liegen u.a. folgende Fundorte vor: Tvärminne Långholmsbranten u. Bönholmsviken.
Anthopharynx vaginatus Karling, 1940	1963 or earlier	3 m	Sand, mud	N. Tvärminne-Gebiet: Zwischen Vikarskär und Långholmen, Sand mit Schlick (A.L.)