The engraving presented here, entitled “Lagena” is in the collection of the Rijksmuseum, Amsterdam. The design was made by Hans Vredeman de Vries (1527–1607), and is part of a series of 12. This work is dated 1563 .
The design shows a jug, richly decorated with snails and crustaceans. In the centre a representation of a ‘Fluviatile God’ (stroomgod). At the base three duck-like feet are shown. It is therefore possible that the snails in this design were drawn after freshwater species, but anyhow they seem pretty imaginary and stylised to me.
Some of these animals look hardly like a snail, but undoubtedly this has to be blamed to the technique used for this engraving, which may have been responsible for some of the rather coarse results.
 RMA RP-P-1952-247. http://hdl.handle.net/10934/RM0001.COLLECT.409497.