In 1896 I described some decapod Crustaceans found in the Cretaceous formation of Vancouver and adjacent islands, British Columbia, which, with the approval of Dr. G. M. Dawson, C.M.G., F.R.S., the Director, had been most kindly placed in my hands for examination by Dr. J. F. Whiteaves, F.G.S., Palæontologist to the Geological Survey of Canada. They were referred by me to the genera Callianassa, Homolopsis, Palæocorystes, and Plagiolophus (see Quart. Journ. Geol. Soc., 1896, vol. lii, pp. 221–228, with 6 figures).