360 PEOFESSOE OWEN ON THE SPECIES OF PHASCOLO^ITS. 



PLATE LV. 



Fig. 1. Inside view of mandibular ramus, Fliascolomys vomlatus. 



Fig. 2. Ditto ditto, Phascohmijs platyrhinus. 



Fig. 3. Ditto ditto, Fliascolomys latifrons. 



Fig. 4. Outside view of ascending branch of ditto, var. of Phascolomys latifrons. 



Fig. 5. Hind view of ascending branch of ditto, Phascolomys vomhatus. 



PLATE LVI. 

 Fig. 1. Under view of mandible, Phascolomys platyrhinus. 

 Fig. 2. Ditto ditto, Phascolomys vomhatus. 



Fig. 3. Ditto ditto, Phascolomys latifrons. 



Fig. 4. Eight maxillary with front pier of zygoma, Phascolomys platyrhinus. 

 Fig. 5. Ditto ditto, Phascolomys latifrons. 



PLATE LVII. 



Fig. 1. Upper view of mandible and mandibular dentition, Phascolomys platyrhinus. 



Fig. 2. Ditto ditto, Phascolomys vomhatus. 



Fig. 3. Ditto ditto, Phascolomys latifrons. 



Fig. 4. Section of lower incisor, Phascolomys platyrhinus. 



Fig. 5. Ditto ditto, Phascolomys latifrons. 



Fig. 6. First and second lower molars, right side, magn., Phascolomys platyrhinus, 



showing the partial coat of enamel (the outer lobes of d 4 ought to be more 



angular). 

 Fig. 7. Fii-st and second lower molars, ib., magn., Phascolomys latifrons. 



All the figures are of the natural size where not otherwise expressed. 



