FOOTMARKS IN THE SANDSTONES OF CUMMINGSTONE 105 
so aberrant from that of the other Teleosaurians, and it seems to me 
that, in leaving an interspace between the dorsal and ventral shields, 
nature has provided for the wants of the economy in a far more 
efficient manner than that here imagined. 
Ventral Scutes—The characters of the ventral armour of the 
Teleosauria are beautifully displayed in the two specimens from the 
Tesson Collection, of Zeleosaurus temporal?s and of 7. Cadomensts, to 
which I have referred. The ventral shield is, in the latter case, 
incomplete ; but the scutes are imbedded undisturbed in the rock. 
In the Zeleosaurus temporalis, on the other hand, the shield is nearly 
complete, but all the parts have been artificially fitted together upon 
a plaster-slab; by whose hand I know not. The comparison of the 
two specimens, however, leads me to believe that the operation has 
been very carefully and conscientiously effected. 
In Teleosaurus temporalis the scutes are so arranged that the 
middle line is occupied by the suture between the two innermost 
rows, and that there are three longitudinal rows on each side. 
Anteriorly, the innermost scutes are nearly square, while posteriorly 
they become pentagonal, or even hexagonal. The scutes of the two 
‘outer rows on each side are also nearly square anteriorly, but more 
or less completely hexagonal in the posterior part of the shield; and, 
from the manner in which the scutes are fitted together, the result is, 
that, while the anterior transverse rows are nearly or quite straight, 
the posterior ones form an angle, open forwards on each side of the 
middle line, so that each of the hinder rows assumes somewhat the 
form of a W. 
There are altogether twenty transverse rows of scutes. Those of 
the last row do not exist in the specimen, but, from the outlines on 
the plaster, were evidently thought by its restorer to be smaller 
than those which preceded them, and to be so arranged as to give a 
rounded posterior margin to the ventral shield. Anteriorly, also, the 
scutes are partially wanting; but the transverse rows appear at first 
to have had not more than half their greatest width, and the anterior 
five rows seem to have contained only two scutes on each side of 
the median line. The shield does not attain its full width before the 
tenth series. 
The lateral edges of the scutes are united by serrated sutural 
edges. The anterior edge of each exhibits a bevelled articular facet, 
occupying nearly a third of the whole external surface, and over- 
lapped by a corresponding extent of the posterior margin of the 
preceding scute. Both surfaces of these scutes are smooth and flat, 
and the pitted sculpture radiates from a point which nearly cor- 
