PROCEEDINGS OF GEOLOGICAL SOCIETIES. 
427 
when first raised are very compact, but after beinor exposed to the action of 
frost split readily aloni^ the planes of bedding. The organic remains are 
numerous and varied, including several orders of plants. The plants are 
for the most part terrestrial, and include such forms as Pterophyllum, Zamia, 
and Sphenopteris. The small extreme branches of coniferous shrubs allied 
to the cypress and yew, which have received the name of Thuytes, occur 
also. Several genera of insects are among the rarer fossils. The Mollusca 
are but limited in species. The fishes of Stonesfield belong entirely to the 
Placoid and Ganoid orders. The remains of this kind are palatal teeth of 
the genera Strophodus and Pycnodus, teeth of Hybodontidse and Sauroidei. 
The most famous of the Stonesfield reptiles is the Megalosaiirus BucJc- 
landi. There is also one species of Teleosaurus, and one of Pterodactyle, 
and one small species of Chelonia. The remarkable catalogue of associated 
life exhibited by this formation is rendered still more complete by three 
genera of small Mammalia. The Northamptonshire equivalent of this bed 
is a deposit of ferruginous sand and ironstone, termed iS'orthanii)ton sand. 
It is worked as an iron-ore near Blisworth. Its fossils arc very scarce, and 
for the most part fragmentary ; those from the Duston pits being the only 
ones that are sufficiently well preserved for identification. From the 
fact of this Northampton sand resting on the Upper Lias without any 
intervening beds, some geologists have been disposed to regard it as the 
equivalent of the Upper Lias sand of Gloucestershire, but the author con- 
siders the evidence not to be in favour of this opinion, as all the species 
hitherto collected arc identical wi];h those of the Stonesfield Slate. 
" On a Fossil Ely trum from the Stonesfield Slate." By Mr. C. S. Gregson. 
The author stated that this wing-cover could not be referred to Bupres- 
tida>, but is undoubtedly a Longicorne, and nearly allied to, though not 
identical with, Prionus coriarius of the present day, which has the elytra 
roughly punctured and three obscure raised lines, whilst the specimen 
under consideration has the whole surface divided equidistantly with more 
deeply sunk lines, and one well-defined mark on the side, carried down to 
the end of the wing-case. Specimens from South America so nearly ap- 
proach the fossil in form that the author thought it advisable to give it the 
provisional name of Prionaroides Ilortord. 
" On the Surface Markings near Liverpool, supposed to have been caused 
by Ice." By G. H. Morton, F.G.S. Towards the end of 1859 the 
author gave an account, to the Literary and Philosophical Society of 
Liverpool, of certain indications of ice passing over and grooving the rocks 
in Toxteth Park. Since that time he has found the same appearances in 
two other places. The following are the three localities : — In a field be- 
tween Park Hill lload and the Dingle ; in the brickfields, about 50 yards 
north of Boundary Street and 150 yards west of Gore Street, where about 
10 yards of striated surface have been exposed for some years. The Sand- 
stone belongs to the base of the " Keuper " formation. The surface in- 
clines about 5° in the same direction as the grooves and furrows, N. 15° W. 
The elevation above the sea is about 80 feet. The other locality is also in 
the brickfields, about 600 yards S.W. of Kirkdale Gaol, and about the same 
distance from that last referred to, with which it may possibly communi- 
cate. The Sandstone belongs to the base of the " Keuper," and the striated 
surface exposed is fully 500 square yards, inclining throughout at an angle 
of 7|° in the direction of the striae, which is the same as in the contiguous 
example, N. 15° W. The elevation above the sea is 80 feet, or perhaps a 
little less. 
Since this communication was read, the author has found very distinct ice- 
grooves at Oxton, Cheshire, half a mile S.E. from the telegraph on Bidston 
