BY H. II. 8C0TT AND n.lVK i;. LORD. 103 



FEMORA OF MEGACERATHINE NOTOTBERIA, 

 AND THOSE OF Till: LEPTOCERATHINE GROUP. 



(Xo. 1 = X. in i 

 No. 1. 



Total length 



Across condyles ... 



Girth below head 



Diami ter of h a I 



Girth above con- 

 dyles 



Girth, including 

 'Mini vies 



Width betv 



two vertical walls 



HUME] 



The left humerus i ■ ton 



of .V. mitchell to fall into Liu • with that of the 



monograph of .V. t<i.<m<. 



COMPARATIVE HUMERI. 



1 = X. mitchelU. No. _ X. tasmanicum.) 



A curious relationship between the width of the di 

 end of the humerus, and the length of the mandibular 

 tooth line, has been noted by De Vis in the case of Wom- 

 bats, and suspected by him to extend to the Nototlieria. 



If the; mandibular tooth line of X. mitchelU is measured 

 it, will be found to be 171 mm., while the distal end of 

 the humerus is 175 mm., as noted supra. 



