Bibliography, etc.—The type specimen of Turbo lævigatus, Phil., has not been seen by me; but since there are some grounds for regarding the fossil, usually so described, as a Neritopsis, the identification becomes important. We must therefore fall back upon Phillips's figure, and upon such collateral evidence as, in the absence of description, may be available. Phillips in the early editions of the G.Y. considered Bean's specimen from the Dogger as identical with Nerita lævigata, Sow. (M. C. t. 217, fig. 1), which he regarded as a Turbo rather than a Nerita. This identification of Phillips has not been endorsed by subsequent writers. D'Orbigny believed that he recognized in Turbo lævigatus, Phil., Delphinula gibbosa, Thorent (Mém. S. G. Fr. 3, p. 260, pl. 22, fig. 10). D'Orbigny's figure, making due allowance for enlargement, is very similar to the one by Phillips.

I Should be much obliged if you would allow me to make a few remarks on the subject of Geological Nomenclature. Certain points connected with nomenclature are forced on the attention of a geologist living at the antipodes of Europe which are not likely to attract the notice of one who is working in, or near, the region from which the standard table of rock-systems has been drawn up; and this must be my excuse for coming forward in a matter which has already been so much and so well discussed.

IN his memoir on the Vertebrates of the Quercy Phosphorites, Dr. Filhol has described two species which he refers to the genus Cœnotherium, viz. C. commune and C. elongatum. Of the former only one ramus of the mandible is figured, and it is referred to a varietal form under the name of procommune: the latter, which is a small form, is known by the cranium and mandible. Both species have no diastema in the dental series. In addition to these, two small species are referred to the genus Plesiomeryx, under the names of P. cadurcensis and P. quinquedentatus, the latter being known only by the mandible; these forms are distinguished from the true Cænotherium by the presence of a diastema between the earlier premolars.

Budle Bay, on the coast of Northumberland, between Holy Island and Bamburgh, is the estuary of the little river Waren. The rocks of the country belong to the Bernician Series or, in other words, to the alternating grits, limestones, shales, and coals which in northernmost England represent the Carboniferous Limestone Series. The northern shore of the Bay is a broad expanse of sand stretching as far as Fenham Flats and Holy Island, but the southern is rocky though not lofty. The Great Whin Sill (the well-known intrusive sheet of Basalt) is present here, and the late Mr. G. Tate of Alnwick has more than once described it as it occurs here, associated with the beds which form the subject of this note. In 1872 he wrote: “At Budle the basalt is nearly connected with an indurated, jointed, red shale (containing Posidonomya Becheri, etc.), which overlies a limestone; for the basalt is in the hill a little above the schist, and on the sea-shore to the east; so that the jointed and indurated condition of the schist is probably due to the action of the Basalt.”

This interesting series of ancient volcanic rocks is described by the late Mr. Clifton Ward in a paper on the Microscopic Structure of Ancient and Modern Volcanic Rocks, read before the Geological Society, in a Memoir of the Geological Survey on the Lake District, and, in greater detail, in a communication to the Royal Microscopical Society. All these are illustrated by figures (in no case very good) and some chemical analyses are given in the last-named paper. I went to the hill in the autumn of 1874 and collected a few specimens, but my visit was cut short by heavy rain. A few weeks since Mr. J. Postlethwaite of Keswick, to whose kindness I have been more than once indebted for additions to my collection, forwarded to me three specimens from Eycott Hill, thinking that I might not have any rocks therefrom, and called my attention to the peculiar reddish tint of the felspar in one of them, which, as he remarked, “resembled the colour of a garnet.” These were varieties of the well-known porphyritic lava of Eycott Hill, which is described by Mr. Ward as the second lava bed in ascending order, and as being above 100 feet thick. This specimen was obtained from a boulder on the hill. On examining it and comparing it with my own (at which I had not looked for some years), I was struck with the appearance of the ground-mass, which seemed to me unusually compact and more like that of an augite-andesite, than of a dolerite or diabase, as the rock is named by Mr. Ward. I had a slide prepared by Mr. Cuttell from Mr. Postlethwaite's specimen, in which I first discovered the mineral which is described in this note, and have since had some more cut from my own specimens from Eycott and others subsequently sent by him, and (for comparison) from the lavas of Falcon Crag near Derwentwater.