Manchester Mevioirs, Vol. liii. (1909), No. %% 3 



the following characters : The prints are oval in form, 

 with the digits directed forwards, increasing in length 

 from I. to IV., III. and IV. being nearly equal, and V. 

 much shorter. There is a broad "sole," rounded behind, 

 and the sand is pressed out in a mound behind the 

 impressions. In the track, the impressions of the right 

 and left sides are widely separated. 



These impressions are shown in Plate /., Figs. \p (pes), 

 nil (manus) and \b (portion of the track). The first digit is 

 not shown in the manus, but was probably present. The 

 toes were almost certainly webbed, and it is therefore 

 difficult to determine their true outline. These and all 

 other figures in Plates /., //. and ///., (except those of 

 tracks) are exactly half natural size. 



I propose to refer to these impressions as CI. 7. They 

 are represented by a small slab in the Manchester 

 Museum, Owens College (L 6334) and a large slab, from 

 a portion of which the track, Fig. \b is drawn, at the 

 Nottingham Museum. 



There are numerous other chelichnoid forms to be 

 found in the Mansfield quarries, mostly of smaller 

 dimensions, but I have not found examples sufficiently 

 good to figure. 



Unclassified forms. — The remaining Mansfield types 

 do not belong to groups which I feel justified in naming. 

 It would seem convenient to indicate all unclassified 

 prints by the letter x. 



Fig. 2, Plate /., shows a large print which needs no 

 further description. It was a very light impression. I 

 was not able to collect the slab, and drew the print on the 

 spot. It appears to be identical with a form from Dumfries 

 {Plate I 11.^ Fig. 16). It may be referred to as a-4. 



Fig. 3, Plate /., is a small print showing four digits 

 (I. to IV.,) with a doubtful indication of V. It was an 



