. Danmarks fauna; illustrerede haandbøger over den danske 72 Af alle vore Ferskvandssnegle har denne Art den storste Variationsbredde. Naar den er nogenlunde typisk udviklet, kan den altid kendes paa det lave konvext-koniske Spir; men undertiden kan den være saa højspiret, at den kan minde om. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Dansk naturhistorisk forening. København, G. E. C. Gad

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Keywords: ., bookauthordansknat, bookcentury1900, bookdecade1900, bookyear1907