378 Reports and Proceedin gs— 
In this paper a very fine skull of Jchthyosaurus was described in 
detail. From the broad triangular form of the skull and the great 
distance between the orbits, the author is led to regard it as belonging 
to a species distinct from any that have hitherto been described. As 
it was presented to the Woodwardian Museum by the Earl of Zetland, 
he eraporee to name it Ichthyosaurus Zetlandicus. 
2. “Note on the Cranial Characters of a large Teleosaur from the 
Whitby Lias, preserved in the Woodwardian Museum of the University 
of Cambridge.” By Prot. H. G. Seeley, F.R.S., F.G.S. 
The author described a somewhat fragmentary cranium from the 
Whitby Lias, which has been sawn through along the median line 
so as to expose the brain-cavity. From the characters thus revealed 
he is led to infer that the resemblance of the Teleosaurs to the existing 
Crocodilia has been somewhat too strongly insisted upon. From the 
peculiarities of the prootic bone, of the tympanic region, and the 
general shape of the brain-case, the author is led to regard the 
fragment as indicating a new species, for which he proposes the name 
of Teleosaurus eucephalus. 
3. ‘On the Discovery of the Place where Paleolithic Implements 
were made at Crayford.” By F.C. J. Spurrell, Esq., F.G.S. 
The Brickearths of Crayford lie in a channel excavated from the 
Thanet Sand and subjacent Chalk. The flakes here described were 
found below the level of the top of the Chalk, on a sort of slope of 
sand. They form a layer, about 10 feet from N. to S., and 15 feet 
(perhaps more) from EK. to W., which is at one end 36 feet, at another 
about 42 feet, below the present surface. ‘The flakes lay touching 
each other, the larger sometimes being several inches thick; they are 
new and clean, though sometimes studded with calcareous concretions. 
Some were broken across, evidently before being covered. ‘The author 
had been enabled to piece many together, and show that the manu- 
facture of haches was the purpose for which they were fractured. 
Also he had found two pieces of a hache. Fragments of bone were 
found associated with the flints; among them was part of the lower 
jaw of Rhinoceros tichorhinus. The author regards these Brickearths 
as slightly newer than the Dartford gravel, which here caps the ‘Thanet 
oo and in which flint implements have also been found. 
4. “The Geology of Central Wales.” By Walter Keeping, Esq., 
M.A., F.G.S. With an Appendix by C. Lapworth, Esq., F. G. S., on 
a new species of Cladophora. 
The district described by the author is much contorted and dis- 
turbed, and offers great difficulties. The following classification of 
its deposits is proposed in descending order:—(3) The Plynlimmon 
Grits; (2) The Metalliferous Slates; (1) The Aberystwith Grits. 
(1) consists of dark grey grits and imperfectly cleaved slates ; they are 
not very fossiliferous, Graptolites being most abundant. (2) A more 
argillaceous series of pale blue and grey colour, much folded. This 
series, near the Devil’s Bridge, appears of extraordinary thickness ; 
but the author believes that this is due to a great inversion or, rather, 
to a series of inversion-folds. Above this is (3) the Plynlimmon group. 
he area occupied by, and general characteristics of these groups were 
described in detail. Fossil evidence enables the author to correlate 
a 
