FOOTMARKS IN THE SANDSTONES OF CUMMINGSTONE 97 
forward, and their left edges somewhat broken. The third row con- 
tains eight scutes. Each of these longitudinal rows extends to the 
same level anteriorly ; but the next, or fourth, series begins opposite 
the fifth scute of the third series, and but a very small portion of its 
first scute is visible. It contains six scutes, of which the hindermost 
are somewhat displaced and thrown forwards one upon the other. 
The fifth series contains only portions of five scutes, which are more 
or less displaced towards the right side.! 
<\n additional small fragment of a scute is visible in front of the 
first and third series. Each scute is on exactly the same level as its 
right-hand and left-hand neighbour, so that the structure of the whole 
fragment is extremely regular. 
About a fifth of the outer surface of each scute is covered by the 
posterior edge of its predecessor; and the fifth and sixth scutes of 
the fourth series are sufficiently displaced to show that the covered 
surface was smooth and bevelled off obliquely, so as to constitute a 
sort of articular facet, narrow and parallel-sided antero-posteriorly. 
but very wide transversely. 
The posterior edge of this facet is cut perpendicularly to the 
plane of the scute, from whose face it rises like a kind of parapet. 
The face of the scute is ornamented with a peculiar sculpture, con- 
sisting of distinct deep pits. The casts of these are of course elevated, 
and lie like drops upon the general surface of the impression—an 
appearance which doubtless suggested the name of the genus. Near 
the centre of the face of the scute the pits are nearly circular in 
outline, but towards the periphery they elongate in the direction of 
radii from a point rather nearer the anterior than the posterior edge 
of the whole scute, and assume a pyriform shape, the small end of 
each being directed inwards. The consequence of this arrangement 
is a very marked radiation of the ornamentation from a centre which 
lies about the junction of the anterior two-fifths with the posterior 
three-fifths of the whole ornamented surface. A small marginal 
space, laterally and posteriorly, is, as Professor Agassiz has observed, 
free from sculpture (fig. 1). 
An inch and a quarter transversely, by a little less antero- 
posteriorly, is a fair statement of the average dimensions of 
these flat scutes, of which I have only seen one or two detached 
impressions among the more recently discovered remains of 
Stagonolepis. 
1 [ have applied the terms right and left here, not to the true right and left series or 
scutes, but to those which appear to be right and left when the face of the fossil is turned 
towards the observer and its anterior end is forward. 
VOL. II H 
