EN
A total of 60 species of land mollusc: 55 snails and 5 slugs were recorded in Romincka Forest as a result of malacological research of 16 sites, combined with additional qualitative search. Due to snail species richness Romincka Forest is among the richest within low-lying forests in Poland and within the whole Middle-European Lowland. It is especially rich in species belonging to the family Clausiliidae. Eleven of the snail species recorded: Columella aspera Waldén, Vertigo ronnebyensis (Westerlund), Aegopinella minor (Stabile), Oxychilus alliarius (Miller), Cochlodina orthostoma (Menke), Macrogastra latestriata (A. Schmidt), M. tumida (Rossmässler), Clausilia dubia Draparnaud, C. pumila C. Pfeiffer, C. cruciata Studer and Helicigona lapicida (Linnaeus), are new records for this part of Poland, or required the verification of old records. Differences In snail species abundance were examined in three habitat types: subcontinental dry-ground forest was richer (46 snail species) than alder-ash marshy forest (40) and glades (22). Dry-ground forest sites are also more uniform in composition.