252 Principal Dawson — On Sauropus unguifer. 



The hind foot, it will be observed, is considerably longer than the 

 fore foot, and has a sort of plantigrade appearance ; and there are 

 some indications which show that tb^ 

 legs must have been strong and thiol 



The hind foot shows four well 

 developed toes, the three outer strong€ 

 than the remaining one. There wg 

 also a fifth toe, which must have bee 

 placed at a higher level than the other! 

 on the outside of the foot. It bore 

 long claw, which was plunged into th 

 mud at each step, and when the foe 

 was raised made a curved trace on tb 

 surface. It probably corresponded t 

 the thumb-like fifth toe of the Labj; 

 rinthodont, and to the detached oute 

 toe of the foot-prints figured by Sir ( 

 Lyell. The fore foot is as broad as th 

 hind foot, but much shorter, and show 

 four strongly-marked toes, with moi 

 obscure impressions of a fifth. 



All the toes of both feet are broad i 

 front, and seem to have had claws, bi 1 

 not of great length, except in the cas 

 of the detached toe of the hind foot abo-v 

 referred to. There is no indication of 

 membrane connecting the toes. 



The prints of the hind and fore fe( t 

 of each side are in a line, and the dij 

 tance between the right and left line 

 say 5^ inches, indicates a broad body i 

 comparison with the length of the leg 



The impression of the hind foot : 

 either a little way behind that of tt 

 fore foot, or the impressions are eq-u 

 distant, indicatinga walking gait varyin 

 somewhat in the length of the stride. 



There are no indications of a tail 

 and in general the body was carrie I ' 

 clear of the ground ; but in one pla( 

 it has been dragged along the surfac 

 leaving longitudinal furrows, probabl 

 indicating that the abdomen was clothe 

 with bony scales, as was generally tl 

 case in the labyrinthodonts of the Ca: 

 boniferous. On another slab there seems gauropus unguifer, Ti'^ZZTc^n- 



tO have been a soft place where the legs iferous sandstone. Nova Scotia. 



of the animal have sunk deeply into the mud, and it would appear 

 to have been mired, extricating itself with some difficulty, and 

 leaving deep marks of the body and legs. 



