92 STUDIES IN TASMANIAN MAMMALS, LIVING AND EXTINCT, 



B. That the astragalus of N. victorice (as obtained 

 from King Island) presents enough variation 

 from that of N. mitchelli to found a genus upon, 

 and would, if treated as an isolated fragment, be 

 certainly so classified by most palaeontologists 

 (vide Page 44 of Monograph of Nototherium teta- 

 nia rt train). 



Again. It will have to be shown that Nototherium 

 tasmanicum, an animal as powerfully tusked as N. 

 mitchelli, was a female, in the face of the fact that the 

 original Zygomaturus skull presents all the characters 

 that usually determine sex. That this latter is not to be 

 confounded with N. tasmanicum is provided for in the 

 circumstances^ of — 



A. A parietal crest as against a sagittal platform. 



B. A small forehead, as against a large flat one. 



C. A leptorhine, as against a platyrhine cranial habit. 



D. Untwisted coronoid processes, as against twisted 



ones. 



E. A tall, slender atlantcan spine, as against a wide, 



heavy, and more or less dwarfed one. 



F. It will also have to be explained why the very 



characters that led us — although quite unbiased 

 as to results — to found Megacerathine and Lepto- 

 cerathine groups, are (with the exceptions of 

 those directly relating to the nasal horn) exactly 

 those that segregate the hairy-nosed Wombats 

 from the mainland and Tasmanian forms. 



G. That a number of Nototheria wore the anterior 



teeth to the exclusion of the jjosterior ones is 

 an observed fact — and always appears in the 

 very creatures that apparently fought by grip- 

 ping with their tusks and lateral incisors, and 

 were by cranial morphology unstated for the 

 possession of large nasal horns. That these ani- 

 mals were not females, is suggested by their 

 large size and powerful tusks, and by the fact 

 that the type of animal called victorice had the 

 very kind of tusks one would naturally associate 

 with their mates, and which are not without 

 parallel in the larger animal, we believe to be 

 the female of Nototherium mitchelli, thus sug- 

 gesting, again, their sex determining value. 



