No complete list of the Stonesfield Fossils has been drawn up since 1855, when some remarks of mine on the Geology of the vicinity of Oxford appeared in the first series of Oxford Essays. During the last eleven years we have received from that rich locality many additional specimens, but not many species new to the University Museum. One has lately reached my hands which I hope will be of interest to the readers of the Geological Magazine, as adding something to the knowledge of a prevalent group of water-side insects, which had left witnesses of its existence through a very large range of Geological Time, viz. the Neuroptera, and specially the Libellulidœ.

While we have in the deposits described no signs of any line of drainage conterminous with the valley through which the Thames now finds its way from London to the sea, until after a series of diverse conditions, and until a most recent date,—that of the Marsh clay, we shall find, in the physical structure of the valley, evidence corroborative of that afforded by the deposits; and showing that the present valley of the Thames is a creation subsequent to all the deposits which it contains that are older than the Marsh clay.

The generic name of the Sauroid Fish, here indicated by portions of jaws, relates to the unusually well-marked arrangement of the teeth on the dentary bone in two almost parallel ranks along the whole of its alveolar border. The outer rank (Plate V. fig. 1) consisting of few and large teeth; the inner rank of small ones in greater number.

Mr. Prestwich has, in two valuable papers, published by the Geological Society, given a very detailed description of a raised beach and associated recent accumulations, upon the coast in the vicinity of Sangatte, a village about five miles from Calais. In the second of these papers, the author mentions that he proceeded round the headland called Cap Blanc-nez, for the purpose of ascertaining whether any traces of a similarly recent formation were to be observed in the bay of Wissant, and that his search, as far as he went, was fruitless; “but,” he adds, “owing to the extent of the dunes around Wissant, such a beach might be entirely hidden by the sands.”.

I cannot refrain from adding, as a supplement to my remarks upon the Raised Beaches in the Pas de Calais, a few rough notes upon a similar formation, examined by me some years since, in Birnbeck Cove, near Weston-super-Mare. The distance apart of the two localities may seem to render this association of the descriptions uncalled-for, but a similar feature in each case makes a comparison between them interesting.