142 Reports and Proceedings— 
Ornithopsis ; and it was shown that teeth from the Portlandian of 
Boulogne, which had been described as Neosodon and Caulodon, and 
regarded as Iguanodont, were likewise of the same general type. 
Jt was also shown that Cardiodon, Owen, from the Forest Marble, 
belonged to the same group. 
3. “On the Dentition of Lepidotus maximus, Wagn., as indicated 
by specimens from the Kimeridge Clay of Shotover Hill, Oxford.” 
By R. Etheridge, Esq., F.R.S., and H. Willett, Esq., F.G.S. 
The paper commenced with a list of fourteen species of Lepidotus 
known in England, from beds between the Lias and Upper Chalk 
inclusive, and an account of the range of the Lepidosteoid fishes 
from Permian times to the present day followed. The occurrence 
of separate teeth of Lepidotus maximus, Wagn. (= Spherodus gigas, 
Ag.), in the Exogyra-virgula zone of Shotover and Kimeridge, has 
been previously recorded; but in the present communication four 
specimens of jaws containing teeth were noticed. 
I. Comprises the upper dentition; it belongs to the same species 
and, possibly, to the same individual as No. 1V. Highteen teeth 
occur in its two fragments. 
II. Contains two teeth, an upper and a lower, belonging to the 
same species as No. IV. 
III. Probably the right dentary bone appears to belong to a dis- 
tinct species. It is very perfect, and exhibits sixteen teeth, of which 
the successors of six are exposed on the underside. The marginal 
series comprises the seven smallest teeth, those placed most in- 
wardly being the largest. Compared with the dentary bone of those 
species of which that element is already known, the fossil approaches 
most closely to Lepidotus maximus, Wagn., but the bone is broader 
in proportion to its length, and the teeth are more numerous. 
IV. Corresponds undoubtedly to Lepidotus maximus, Wagn. The 
dentition of this specimen does not, however, appear to belong to 
the left upper jaw, but to the dentary bone. Its upper surface 
contains seventeen teeth, and the lower, or successional, series con- 
sists of fifteen = 82 in position. 
IJ.—February 6, 1889. —W. T. Blanford, LL.D., F.R.S., President, 
in the Chair.—The following communications were read :— 
1. “On the Occurrence of Paleolithic Flint Implements in the 
neighbourhood of Ightham, Kent, their Distribution and probable 
Age.” By Joseph Prestwich, D.C.L., F.R.S., F.G.S. 
The author stated that Mr. Harrison of Ightham has discovered 
over 400 paleolithic implements lying on the surface at various 
heights and over a wide area around Ightham. A description of 
the physiography of the district and the distribution of the various 
gravels and drifts was given, and in the absence of fossils, attention 
was called to the different levels at which the deposits occurred, and 
to their physical features and characters. Besides the river-gravels, 
two groups of unclassed gravels were described, one occupying a 
low level, and the other levels higher than that to which the river- 
drifts reach ; the latter is of varied composition. 
