96 STUDIES IN TASMANIAN MAMMALS, LIVING AND EXTINCT. 



EXPLANATION OF PLATES XIII.-XXI. 



Nototherium mitchelli. 



Plate XIII. 



The side aspect of the skull giving structural details 

 of the ear, zygomatic arch, tusks, and nasal septum. 



Plate XIV. 



Showing the face, toothline, nasal studs, pre-alveolar 

 extension of the tusks and the asymmetrical processes. 



Plate XV. 



Skull resting upon tusks, and pre-massiter processes. 

 Showing nasal platform, nasal studs in situ, also concave 

 frontal platform, upon which a second small horn may 

 have rested. 



Plate XVI. 



Skull, showing the toothline, palate, and basic view 

 generally. 



Plate XVII. 



Showing nutrient foramina coming up to nasal plat- 

 form, parietal platform and occiput, also convex contour 

 of the parietals as they contribute walls to the temporal 

 fossae. 



Plate XVIII. 



Mandible orientated to show toothline and mutilation 

 to tusk due to an accident in life. 



Plate XIX. 



Mandible in side view, showing cingula, of teeth, 

 dental foramen, etc. 



Plate XX. 



Mandible arranged to show both condyles, coronoids 

 mutilated (post mortem). Contour of condyle similar to 

 that of the platyrhine wombat. 



Plate XXI. 



Contour lines of the nasal platforms of Nototherium 

 mitchelli male and female. 



No. 1. Male. — Vertical axis = 110 mm; transverse 

 axis = 108 mm. 



No. 2. Female. — Vertical axis = 115 mm; transverse 

 axis = 80 mm. 



A & B indicate nutrient foramina in anterior regions. 

 C is a third foramen for nourishing the base of the horn. 



