Collecting site

Leppäkoski, Finland
several locations in Finland with this name, not sure which one Luther 1961 {2736} is referencing.
latitude: 61.650002     61°39'0.01"N
longitude: 25.9     25°54'0"E

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

Collected here:

Planaria torva (Müller, 1773)	1961 or earlier			Binnengewässer Ostfennoskandiens. Leppäkoski, Quelle Someron lähde
Dendrocoelum lacteum (Müller, 1773)	1961 or earlier			Janakkala, Saarenpää, Quelle; Leppäkoski, Someron lähde (A.L). [Ta. map area, p. 42 of Luther 1961].
Castrada (Castrada) hofmanni Braun, 1885	1963 or earlier			Janakkala: Leppäkoski, Puujoki bei Rauhaniemi u. Sipilä
Castrada (Castrada) hofmanni Braun, 1885	1963 or earlier			Leppäkoski, See Rahittu.
Mesostoma lingua (Abildgaard, 1789)	May 19, 1959			Janakkala: Leppäkoski, See Rahittu; Röyhynsuo; Ilmusjärvi, beim Ausfluss des Puujoki.
Bothromesostoma essenii Braun, 1885	1963 or earlier
Microdalyellia picta (Schmidt, 1848)	1955 or earlier
Castrella (Castrella) truncata (Abildgaard, 1789)	1955 or earlier			See Rahittu (A.L.)