Cyphoderia ampulla
Cyphoderia ampulla

Cyphoderia ampulla (Ehrenberg, 1840)

I found these specimens in an eutrophic ditch near Pingjum, in the northern part of the Netherlands, together with many shells of Cyphoderia laevis. All shells had an oval aperture.

Cyphoderia ampulla
Around the aperture a veil is visible.
Cyphoderia ampulla
Cyphoderia ampulla, stacked image
Cyphoderia ampulla
Cyphoderia ampulla
Aperture, surrounded by a supposed organic veil
Cyphoderia ampulla
Cyphoderia ampulla
Aperture bordered by tooth-like scales; organic veil is arrowed.
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