Tertiary.] 



PALEONTOLOGY OF VICTORIA. 



[Mammalia. 



size and more triangular form of the expansion, 

 groove of the acetabulum is also narrower. 



The entering 



Profile outline of four anterior sacral vertebras of fossil Wombat, natural size, showing the disproportionate height 

 of the neural spine of the anterior vertebra. 



In all these characters the approach of the pelvis here figured 

 is most near to those of the P. platyrhinus ; but the anterior sacral 

 vertebra, in its long slender neural spine, agrees with those of the 

 lumbar region more closely than in any living skeleton I have seen. 

 And the second and third caudal vertebrae are more massive and 

 largely anchylosed. 



The specimen figured is from the clay of Bulleen Merri. 



EXPLANATION OF FIGURES. 



PLATE LXX. Sacrum and left os innominatum, viewed from within, natural size (reversed 

 in the lithographing). 



FREDERICK McCoy. 



By Authority : JOHN FERRES, Government Printer, Melbourne. 

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