2 STiniKS IN TASMANIAN MAMMALS. MVIM; ANI« KXTINCT. 



As far as it is possible to compare actual bones with a 

 cast, these data agree very well with the skull case in ques- 

 tion. In the item of total platform width, they agree exactly, 

 since both give 160 mm. as a result. 



Again, the general all-round reduction in size agrees 

 with what might be expected from a female animal's skull, 

 when studied in terms of a male animal of the same species. 

 The surface of the bone of this nasal platform is so well 

 preserved that it is easy to note even minute, superficial 

 markings, and we accordingly supplied a sketch illustrating 

 the contours, and grouping of vascular scars, etc., the dia- 

 gram, we opine, being self-explanatory. Upon the assumption 

 that the female animals carried a less massive nasal horn 

 than the males, it naturally follows that the cervical verte- 

 bra would share in a dimensional reduction, and this is 

 exactly what we find to obtain. 



COMPARATIVE CERVICAL VERTEBRA. 



Assumed female. 



Height of atlas 



Anterior height of neural canal 

 Anterior width of neural canal 

 Across atlantean cups 



Diameter of anterior centrum 

 Anterior width of neural canal 



Diameter of anterior centrum 

 Anterior height and width of neural 

 canal 



TUSK. 



The single tusk belongs to the right upper side of the 

 mouth, and what was said (1920, p. 107) needs little, if any, 

 emendation, namely, "Female tusks flatter in outline, less 

 "divergent, and less powerful in outline." As nothing re- 

 mains to us antcror of the premolar, except the said tusk, 

 and perhaps a mandibular tusk — to be noted later on — any 

 remarks supplied respecting the amount of divergence would 

 be largely speculative, deduced from a comparison with other 

 King Island and Mowbray Swamp specimens, and if this is 

 done the best conclusion we can arrive at is that, for the 

 present at any rate, the descriptive terms "less divergent" 



