A follow-up visit to the nature reserve Wilhelmina-Oard near Sint Nicolaasga in the province of Friesland in the autumn of 2018 has revealed the presence of six additional terrestrial molluscs. Fifteen species are now known from this forest on rather acid soil.

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Spirula

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Nederlandse Malacologische Vereniging

H.K. Mienis. (2019). Aanvullende gegevens betreffende de landslakken van het natuurreservaat
Wilhelmina-Oard bij Sint Nicolaasga, Friesland. Spirula, 418, 43–43.