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Arion subfiiscus Drp. 

 Vitrina angelicae Beck. 

 Hyalina fulva Drp. 



— hammonis Str. 



— petronella Charp. 

 Helix ruderata Stud. 



— harpa Say. 



— arbustorum L. 

 Pupa gredleri Cless. 

 Ferussacia arctica n. sp. 

 Cionella lubrica Müll. 

 Clausilia bidentata Ström. 



— — var. septentrionalis A. Schm. 

 Succinea pfeifferi Rssm. 



Limnaea stagnalis L. 



— — var. livonica Kob. 



— auricularia Drp. 



— ovata Drp. 



— — var. ampullacea Rossm. 



— — var. inflata Kob. 



— mucronata Held. 



— peregra Müll. 



— palustris Müll. 



— — var. fusea C. Pfr. 



— truncatula var. raicrostoma Moq.-Tand. 



— — var. lapponica Westerl. 

 Valvata piscinalis Müll. 



— cyclompliala Westerl. n. sp. 



— ambigua Westerl. 



— Raboti Westerl. n. sp. 

 Sphaerium mamillanum Westerl. 

 Pisidiuni amnicum Müll. 



— Lilljeborgi Clessiu. 

 Margaritana margaritifera L. 



