58 AMPHITHERIID^E. 



INSECTIVORA. AMPHITHERIIDM. 



Fig. 19. 



AMPHITHERIUM BRODERIPII. 



Ampliitherium Broderipii. OWEN. 



ThylacotJterium Geol. Trans. 2nd Series, vol. vi. pi. 6. fig. 1. 



THE fossil figured above, of the natural size in outline, 

 and magnified in the finished cut, was discovered, like the 

 preceding jaws, in the Oolitic slate of Stonesfield, and was 

 presented by the Rev. H. Sykes to the Philosophical 

 Institution at York, in whose Museum it is now preserved. 



In this, as in the first two specimens of the Thylacothe- 

 rium Prevostii, the left ramus of the lower jaw offers its 

 inner surface to the observer: it presents at its anterior , 

 part the sockets of three incisors and one canine, of small 

 and nearly equal size, each having a simple fang ; then fol- 

 low the empty sockets of three small premolars, each with 

 two fangs ; to these succeed the three larger premolars, in 

 place, each having two fangs protruded to a certain extent 

 from their sockets, and fixed by the adherent matrix in that 

 position, which proves that they were not anchylosed to 

 the osseous substance : for these teeth, no doubt, became 



