Part III of the Catalogue of the Fossil Cephalopoda in the British Museum (Nat. Hist.), by A. H. Foord and G. C. Crick, was published in 1897. Since then much fresh material has come into my hands and it is now possible to give much more accurate and fuller details of the horizons and localities at which the various species occur. This is of special importance, in view of the fact that the Goniatites can be used as zone indices of the Carboniferous Series from the upper part of the Dibunophyllum beds (D2 of Dr. Vaughan) up to the Middle Coal-measures. This I showed to be the case in my Presidential address to the Yorkshire Naturalists' Union, and published in the Naturalist, April to July, 1909, and elsewhere. Many details have, however, been added since then, and an elaborated and emended table will be published in a forthcoming paper by myself and Dr. Wilmore, F.G.S., on the Carboniferous succession of some Midland areas.

Let us now turn to the lessons presented by the Mollusca found in the raised beaches of Norway and Western Sweden.

Some years ago I published, with the late Professor T. Rupert Jones, F.R.S., a description of two small Limuloids referred to the genus Bellinurus, sent me by ray friend Dr. H. M. Ami (then of the Canadian Geological Survey), who obtained them from the Lower Carboniferous Marine Series on the Intercolonial Railway of Canada, in Colchester County, Nova Scotia (Geol. Mag., 1899,pp. 387–95, PI. XV, Figs. 2 and 3), under the specific name of B. B. grandævus. Fig. 2 was collected from the sixth cutting east of Riversdale Station and Fig. 3 from the third cutting east of Colnary River.

Erratum.—In Mr. F. W. Harmer's article in the September dumber, “Stratigraphical Position of the Coralline Crag,” p. 410, for Walton horizon read Oakley horizon = Poederlien, and for Oakley horizon read Walton horizon = Scaldisien—the names Walton and Oakley having been reversed.