“The earliest known example of a fossil Macrourous Decapod Crustacean was obtained by Prof. Prestwich from the Pennystone Ironstone of the Coal-measures, Coalbrook-dale, Shropshire, and was at that time referred by Prof. H. Milne-Edwards, who examined it, to the Phyllopoda under the name of Apus dubius (see Trans. Geol. Soc. Lond., 1836, 2nd series, vol. v. p. 413). In 1844 some further remains of this genus were noticed by W. Ick, Esq., F.G.S. (see Quart. Journ. Geol. Soc. Lond., vol. i. p. 199).