Nürnberg, Raspe, 1791. Original, hand-coloured engraved plate (21 x 28 cm).
From the magnum opus of Eugenius Johann Christoph Esper (1742-1810), professor at the Königlich Preussischen Friedrichs-Alexanders Universität zu Erlangen. This plate was published as part of a grand work on corals and sponges. It is by far the most important work that he wrote on his own. Using the Linnaean system he described and illustrated an immense number of corals and sponges. Many still bear the names introduced by him. The present plate shows a sponge from the North Atlantic and Arctic Sea. It is in fact the original introduction of this name, and the illustration shows the type specimen. A fine, clean copy. Cat. BM(NH) p. 542; Nissen ZBI, 1315.