In the British Museum, Print and Drawings Department, this engraving is part of the collection, entitled “Ora Quinta di Giorno”. It was made by Louis François Mariage around 1803–1806 after a design by Raphael. The description reads: “Fifth hour of the day: draped female figure, on dark ground, holding a bunch of herbs and gesturing to the sun; below, a scene representing a dove, a snake coiled around an altar,a lizard and a snail” .
The snail is dextral with two tentacles but rather stylised.
 BML, inv. PD 1875.0710.2958. http://to.ly/L0He.