I. Hyperodapedon Gordoni , Huxley. The reptile from the Elgin sandstone on which Huxley bestowed this name in 1859, and which had so great a bearing on the determination of the age of the deposits in which it was found, has lately been the object of further investigation on the part of Professor R. Burckhardt, who, after a study of the specimen from which Huxley drew up his second account, gave a new interpretation to some of the bones of the skull. It was very much to be desired that further remains should be discovered in order to bring fresh light on the litigious points. I was therefore highly gratified at hearing from my friend Mr. William Taylor, J. P., of Lhanbryde, of the discovery of two new skulls at Lossiemouth, near Elgin, and 1 gladly accepted his kind offer to send me the specimens for examination. I have not been disappointed in my expectation, and it will be seen that the new material affords a substantial supplement to our knowledge of the Triassic Rhynchocephalians.