89 



its front part evenly and gradually descending towards the glenoid level without 

 marked transverse convexity. In pearsoni the bullae are most like those of 

 hacketti, although perhaps a little more swollen. In making this comparison 

 six skulls of hacketti and ten of lateralis have been available, so that the difference 

 is evidently fairly constant. 



;sooo-'- Fig. 7. 



Petrogale pearsoni. 

 Left manus and pes. Natural 



"Incisors a little larger than in lateralis, the whole row 10 mni. in length, 

 about as in hacketti, as compared with about 9 mm. in lateralis. Secator also 

 slightly larger than in lateralis, much smaller than in hacketti. 



