An engraving of Vitrina pellucida by Orlando Jewitt from his 1863 book The land and freshwater mollusks indigenous to, or naturalized in, the British Isles
The shell is globular. There is no apertural membrane. The mantle lobe is very small. There is no penial appendix, no vagina, which means that penis, oviduct and spermatheca duct join at a common point.[2]
These are closely allied species, in which the internal organization is in many cases more distinctive than the external aspect of the shell.[3]
Distribution
These species occur in North America, Greenland, Europe and northern Asia.
^Delaunay, Journ. de Conch , xxv., p. 363, pl. 11, f. 5.
Studer, S. (1820). Kurzes Verzeichnis der bis jetzt in unserm Vaterlande entdeckten Conchylien. Naturwissenschaftlicher Anzeiger der Allgemeinen Schweizerischen Gesellschaft für die Gesammten Naturwissenschaften, 3 (11): 83–90; (12): 91–94. Bern
Hubendick B. (1954). The relationships of East African Vitrinae with notes on the taxonomy of Vitrina. Arkiv för Zoologi. 6(5): 83-96
Bank, R. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16, 2017
