NEW PERMIAN VERTEBRATES. 243 



lated ; both the feet, unfortunately, are lying in part upon their 

 fibular side, concealing some of the bones ; the tenth to the 

 thirteenth caudal vertebrae are disarranged and partly missing, 

 probably due to the fact that they lie partly over the right foot ; 

 the small terminal vertebrae of the tail are also missing, where 



FIG. 2. Pariotichus Liticeps, skull from above and from the side ; natural size. 



they protruded from the margin of the slightly eroded nodule. 

 On the whole, the only doubtful details of the skeleton are the 

 number and arrangement of the tarsal bones, and the extreme 

 tip of the tail. The extreme terminal phalanges of the first three 

 fingers, because of their minute size, may have been destroyed in 

 the preparation of the block, or slightly dislodged. 



Skull (Figs, i, 2). The skull is in a marvellously perfect 

 condition, the only injury it has suffered being a very slight 

 erosion of the extreme tip of the muzzle where it protruded from 

 the edge of the nodule. It is remarkable among reptiles for its 



