BY C. W. DE VIS. 165 



Posterior upper incisors near midline of 

 jaw ; cusp of premolar with a deep 



lateral cleft Diprotodon. 



Upper premolars oval, tuberculated ; cranial 

 habit very massive, with short expanded 



muzzle Zygomaturus. 



Incisors \ — 



Crowns of first incisors above and below 

 widely diverging, with a similar strong 

 double curvature ; Euoivenia. 



Supplementary Note : In a collection of fossils received since 

 the foregoing remarks were remitted, a second example of E. 

 robusta very opportunely occurs. It exemplifies the state of the 

 teeth and jaw at an early stage of adult life. At this period the 

 following unessential differences are noticeable : — The corrugations 

 of the ectocrotaphyte fossa are much less pronounced, the curva- 

 ture, descending from the edge of the diastema, commences 

 further forward, and the surface of wear on the incisor is not so 

 extensive. In all other respects it is identical with the type. In 

 the same collection is an isolated incisor and a fragment of jaw 

 containing a premolar and first true molar, much worn. 



