PHASCOLOMYS. 239 



broad and deep channel situated on the convex side, 

 and a very shallow channel on the concave side ; the 

 crown presents nearly the figure of two triangles 

 joined together, hut with the angles somewhat 

 rounded. The foremost of the molars, which from 

 analogy we presume is a false molar, represents one- 

 half of one of the true molars. The skull is very mas- 

 sive and heavy, and its structure throughout evinces 

 enormous power in the masticatory muscles it pre- 

 sents all the essential characters observable in the 

 crania of the Marsupial animals, and is totally unlike 

 the skull of any of the Rodentia, though the Wom- 

 bat has been classed by some authors with that 

 group. 



SIDE VIEW OF THE TEETH OF THE 



The fore-feet have five toes provided with strong 

 nails or claws fitted for burrowing, and the hind-feet 

 have also five toes, but the inner one is nailless, and, 

 though very short, projects nearly at right angles from 

 the foot, as in other Marsupials in which this toe exists. 



