92 Mr. R. Harkness on some new Footsteps in the 



at Locherbriggs, Craigs and Caerlaverock, and rarely exceeds the 

 dimensions before given, and to distinguish it may be called the 

 Chelichnus plancus from its broad hind-feet. 



Another form of impression which has been only very recently 

 obtained from the Green Mill quarry, Caerlaverock, is composed 

 of a series of steps, consisting of markings of thick, rounded, 

 blunt claws or toes. The steps, of which a slab in my possession 

 affords eleven on each side, differ on the one side from those on 

 the other. Those on the right side are formed of three indents, 

 arranged almost in a line, but having the centre one slightly in 

 advance of the other two. Behind the centre and the outer ones 

 another marking similar to those in front occurs, and about the 

 same distance from them as they are from each other. The dia- 

 meter of each of these circular markings is about ^ of an inch ; 

 and those on the left side differ from those on the right in 

 having the hinder indents behind the inner one instead of be- 

 tween the outer and centre ones. The indents in all the impres- 

 sions are marked in front by a slight elevation, which extends 

 for a distance equal to about their diameter before them ; and 

 which appears to have arisen from the portion of the foot which 

 caused the indents having been thrust obliquely forwards. The 

 difference in the position of the hinder indent has probably been 

 caused by one of the toes in each foot not having left its impress. 

 No other portion of the foot has caused any marking, each step 

 consisting solely of four claw-like impressions. The distance 

 which separates the steps on each side from each other is less 

 than the space occupied by the three front indents of each foot, 

 being under an inch ; and the interval between the prints on the 

 right and the left side is about 2 inches, exceeding the space oc- 

 curring between the steps on either side by more than double 

 the distance. 



From the impression as seen on the slab it would seem that 

 the hind and fore foot were similar not only in form but also in 

 size, both being large ; and the evidence which the impressions 

 afford is such as to show that the animal which formed them 

 was of much greater breadth than length. Altogether the cha- 

 racter of the footprint, and the great distance between the feet 

 on the right and those on the left side, show resemblance to a 

 Chelonian form ; but this form was widely different from the one 

 before alluded to, being apparently more nearly allied to Tes- 

 tudinata than the previous footsteps. 



From the tortoise-like form of this step I propose to call it 

 provisionally the Chelaspodos Jardini, the specific name being in 

 honour of Sir William Jardine, Bart. 



On a slab of sandstone from the same locality as the before- 

 described impression there are seen two distinct kinds of steps ; 



