4 IIlCKLING, British Pcriiiian Footprints. 



isolated print on a large slab, and was drawn in the quarry. 

 There is little to separate it from impressions from Pen- 

 rith {Plate II., J^ig. 9) and Elgin {P/ate II., Figs. 7 and 8). 

 It may be termed xT). 



In /v>. 4 is represented a footprint from Mansfield 

 now in the Manchester Museum (L. 6894). Digits II., 

 III., IV., and V. are well shown. III. being the longest, 

 and a slight impression of I. indicating it as a much 

 shorter digit. This print appears to be identical with 

 those forming an unnamed track from Dumfries in the 

 Edinburgh Museum {Plate III, Fig. 19). In the Dumfries 

 prints digit V. is not shown. There may be a doubt as to 

 whether it really occurs in the Mansfield specimen, as it 

 is confused with another small print. I propose to call 

 this form x^. 



The last Mansfield print figured {Fig. 5) is quite unlike 

 any other I have seen. I was not able to collect it. 

 Being a strongly characterised form it will be useful for 

 comparison with future discoveries elsewhere. 



Penrith Footprints. 



These prints occur in the well-known Penrith Red 

 Sandstone. Further particulars of the occurrence will 

 be found in the original account by Mr. Varty Smith 

 (Smith, G. v., '84). Most of the individual prints are 

 imperfect, but good tracks are abundant in the quarries. 



Cheliclmoid forms. — Numerous small representatives 

 of this type occur. Plate II., Fig. 13, shows a typical 

 track, with the prints of the manus partly obliterated by 

 those of the pes, and the typical semilunar mound behind 

 the prints. Other tracks of this t}pe show a considerable 

 amount of variation in the relative [)osition of manus and 

 pes, in size, and in length of stride. These points taken 



