FOOTMARKS IN THE SANDSTONES OF CUMMINGSTONE I15 
I will not take upon myself to decide. A concave surface, rising 
anteriorly, connects the impression of the proximal moiety of the 
first digit with that of the proximal phalanges of the second digit. 
This impression, which is about an inch long, is very deep, especially 
at its posterior end, and consists of two divisions, joining at an angle, 
which is open outwards. The posterior division is shorter and 
broader than the anterior, and the two would answer very well to 
two phalanges; the anterior division is succeeded by a third elon- 
gated and much fainter impression, about 1} inch long, broad and 
tolerably deep at the base, but gradually tapering and fading away 
anteriorly. This appears to be the impression of the ungual phalanx 
of the digit ; so that it would appear that there were three phalanges 
in this digit, that the direction of the proximal one is straight for- 
wards, that of the middle phalanx forwards and outwards, and that 
of the distal or ungual phalanx still more outwards ; so that the three 
describe a kind of curve, convex inwards. 
The impression of the third digit is like that of the second, except 
that the distance between what appears to be the end of the proximal 
phalanx and the base of the ungual phalanx (corresponding with the 
‘anterior division, spoken of above) amounts to fully ? inch, while in 
the second toe it is not more than 4 inch. Perhaps there were two 
phalanges here. The impression of the ungual phalanx is, as was 
stated above, 1+ inch long. 
The impression of the fourth toe is shorter than that of the third ; 
but, as the ungual phalanx is of nearly the same length as in the 
third, the shortening would appear to be due either to the shortening, 
or to the smaller number, of the proximal phalanges. 
The impression of the fifth digit does not quite reach to the base 
of the ungual phalanx of the fourth. The impression of the terminal 
phalanx is less distinct, and, like the fourth, the stirring up of the 
sand has rendered it indistinct at its proximal end. 
The surfaces of the interspaces between the digits are so peculiarly 
rounded that there can be little doubt they were moulded by a con- 
necting membrane or web, though the precise boundaries of this 
interdigital membrane are not traceable. 
(Hind Foot.)\—The ends of the toes of the posterior impression 
of the pair to which that just described belongs infringe upon the 
posterior and outer part of the plantar margin of the anterior im- 
pression. It is but a confused mark, however, and the true characters 
of the imprint left by the hind foot are much better shown in the 
pair behind these, where the sand was evidently firmer when the 
animal walked over the surface. 
L 2 
