538 Mr. Owen on species of 



characters in the casts, that those sections will confirm my deductions by present- 

 ing the peculiar labyrinthine structure. Between the Labyrinihodon Jageri and the 

 foot-prints of Cheirotherium Hercules, Egerton, the same correspondence of size 

 exists as between Lab. pachygnathus and Cheirotherium Kaupii. 



Labyrinthodon (Anisopus) scutulatus. 



But though the evidence of more than one species of a distinct and peculiar 

 genus of large Batrachians in the sandstones yielding the impressions of the Chei- 

 rotherium and other Reptilian footsteps be admitted to be valid, and the fossil re- 

 mains be allowed to correspond in size with the animals which have left those 

 footsteps, yet the opinion which I have formed from a comparison of the texture 

 and markings of the bones, that the fragment of humerus and femur, and the iliac 

 bone before described, belong to the same species, may not be received with the 

 same implicitness ; since they were not discovered in such juxtaposition as would 

 indicate them to have formed part of the same skeleton. Other evidence may 

 therefore be demanded in proof of the proposition that the Labyrinthodont Batra- 

 chians likewise corresponded with the Cheirotherian footsteps in the small size of 

 the anterior as compared with the posterior extremities. 



A valuable contribution towards the required demonstration is afforded by the 

 specimen, with the description of which the present paper terminates : this speci- 

 men (PI. XLVI. fig. 1.) consists of a closely and irregularly aggregated group of 

 bones, manifestly belonging to the same skeleton, and including four vertebrae 

 more or less complete, portions of ribs, four long bones of the extremities, one end 

 of a large flat bone, and several small dermal osseous scuta, all cemented together 

 by a mass of soft sandstone. This highly valuable and unique fossil was discovered 

 in the new red sandstone at Leamington, and was transmitted to me for examina- 

 tion in the course of last summer by Dr. Lloyd. Being at that time unacquainted 

 with any othe • than the dental characters of the Labyrinthodon, I had no evidence 

 of the relationship between that genus and the present fossil, for this presented 

 no trace of teeth. I shall first give the notes which I originally took of this 

 fossil, and afterwards enter upon the comparisons which prove it to belong to the 

 same famih^ if not to the same genus, as the Warwickshire Batrachians. 



The group of bones from the new red sandstone at Leamington belong to a small 

 reptile with the biconcave system of vertebrae, but which, from the length, struc- 

 ture, and form of the long bones of the extremities, must have been of terrestrial 

 rather than marine habits, and which had the skin defended by numerous 

 small rhomboidal bony scutes, with a smooth central surface, and with the outer 

 surface sculptured by three or four longitudinal ridges (fig. 5.). This reptile 

 has had four legs, and the hind-legs have been at least twice as long and as 



