Tertian/.'] 



PALAEONTOLOGY OF VICTORIA. 



[Mammalia. 



from the teetli behind, from which it is thus separated, instead of 

 as formerly supposed inclining from the second tooth {i. 2) and 

 having its angle representing an obtuse point of a canine. In his 

 earlier Memoirs Professor Owen, I think correctly, called this tooth 

 the third incisor, and called the next small conical tooth on its 

 inner posterior margin the canine, while in his above quoted third 

 Memoir he states that he considers the third tooth from the front 

 to be the canine., chiefly because he says the socket is traversed 

 by the premaxillo-maxillary suture, while the tooth next behind he 

 classes as first premolar, because of its being implanted " in the 

 maxillary at some distance from the suture with the premaxillary " 

 and its internal position. Now seeing in our specimens that the 

 position of the third tooth being really the reverse of its supposed 

 inclination, and that it thus combined more in action and appear- 

 ance with the second incisor, and sloped away from the conical 

 pointed tooth behind, its general aspect was so much that of a third 

 incisor that after our plate was lithographed, I attempted success- 

 fully to expose the surface of the bone with acid, so as to show 

 clearly the course of the premaxLllo-maxillary suture. The appear- 

 ance of the specimen after the removal of the obscuring matrix 

 is represented on a reduced scale in the accompanying woodcut ; 



Kednced view of palate, showing tbe bone cleared of 

 matrix by afid, exposing the premaxillo-maxillary 

 suture bisecting the base ol the canines and incisive 

 foramina, and showing space on ri^ht hand side be- 

 tween third incisor and premolar also crossed by it. 



Kednced side view, showing directinn and character of 

 the premaxillo-niaxillary suture dividing the socket 

 of the canine. 



[ 10 ] 



