PHASCOLOM VIDE 145 
wall formed by a descending process of the squamosal, instead of the 
Fic, 44.—Chwropus castunotis, From Gould. 
alisphenoid. Masseteric fossa of mandible with a perforation and 
a deep pit. 
Fic. 45.—Common Wombat (Phascolomys ursinus). 
PhascolomysA—The existing Wombats (Fig. 45) comprise three 
1Geoffroy, dan. du Muséum, vol. ii. p. 365 (1803). 
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