Having in a collection of fossils from the Lithographic Stone of Bavaria a Ganoid fish, I consulted Dr. Smith Woodward, and through his kind assistance have proved it to belong to the rare species Pleuropholis lœvissima. The species has hitherto been imperfectly known, the only figure being by Egerton of a comparatively small fish, about the specific determination of which there seems to be some doubt. I therefore think the new specimen worthy of description, and it is shown of half the natural size in the accompanying figure. Nearly the whole of the fish is preserved in the fossil, but the head is shown only in impression. Most of the scales are removed from the near side, and the fins are fragmentary (see Plate XIII).