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Cionella acicula Müll. 

 Pupa frumentum Drp. 



— secale Drp. 



— avenacea Bing. 

 * — dolium ]\Iich. 



— icmbilicata Drp. 



— muscorum L. 



— minutisdma Ihirfin. 



— edenhila Drp. 



— costulata Nilss. 



— Jaevigata Kok. 



— antivertigo Drp 



— substriata Jeffr. 



— pygmaea Drp, 



— alpestris Alder. 



— arctica Wall. 



— SJiuttleioorthiana Charp. 



— pusilla Müll. 



— angustior Jeffr. 



— doliolurn Brug. 

 Balea fragiUs Drp. 

 Clausilia laminata Mtg. 



— silesiaca A. Schm. 



— orthostoma ]\Ike. 

 * — Braunii Charp. 

 *— ornata Zgl. 



— biplicata Mtg. 



— cana Held. 



— plicata Drp. 



— ventricosa Drp. 



— Bolphii Leach. 



— tumida Zgl. 



— lincplata Held. 



— mucida Zgl. 



— plicatiila Drp. 



— parvula Stud. 



— dubia Drp. 



— nigricans Pult. 



— cruciata Stud. 



— pumila Zgl. 

 *— gracilis Rossm. 



— filograna Zgl. 

 Sucdnca putris L. 



— Pfeifferi Rossm. 



— oblonga Drp. 

 Carychium minimum Müll. 

 Limnaea aHricularia Drp. 



Limnaea lagotis Sehr. 



— oi'ata Drp. 



— involuta Ilarvey*) 



— peregra Drp. 



— tnmcatida Müll. 



— stagnalis L. 



— 2)alustris Müll. 



— turricula Held. 



— clongata Drp. 

 Amphipeplea glutinosa Müll. 

 Physa hypnorum L. 



— fontinalis L. 

 * — acMfa Drp. 



Planorbis corneus L. 



— a^MS Müll. 



— glaber Jeffr. 



— cristatus Drp. 



— imhricatus Müll. 



— Rossmaessleri Auers. 



— limophilus West. 



— carinatus Müll. 



— marginatus Drp. 



— vortex L. 



— rtcies Mühlf. 



— charteus Held. 



— septemgyratus Zgl. 



— spirorbis L. 



— rotundatus Poiret. 



— contortus L. 



— fontanus Lightf. 



— nitidus Müll. 

 Ancylus fluviatilis L. 



— lacustris L. 

 J.CWIC poUta L. 



— lineata Drp. 

 *Pomatias scptemspirale Raz. 



Cyclostoma elegans Müll. 

 Paludina contecta Millet. 



— fasciata Müll. 

 Bithynia tentaculata Leach. 



— ventricosa Gray. 

 Hydrobia Dunkeri Ffld. 



— Schmidtii Charp. 



— Steinii von Martens. 

 Lithoglyplius naticoides Drp. 



*) Nur in einem irischen See gefunden. 



