68 



ON THE EXTINCT MAMMALIA OF 



Thickness of crown of lower canine, 



"Width of space occupied by upper incisors, 



Width of space occupied by lower " 



Length of lower jaw, partially estimated, 



Depth of lower jaw at condyle, partially estimated, 



" " at coronoid process, 



" " below third premolar, 



" " at side of chin, 



" " at symphysis. 



Breadth of chin, . 





. 



Length of coronoid process above condyle, 



Breadth of 



crown of 



upper first premolar, 



Length 





a 



u u 



Breadth 





a 



second " 



Length 





a 



a a 



Breadth 





a 



sectorial molar. 



Length 





a 



a « 



Breadth 





a 



tubercular " 



Length 





a 



u u 



Width, fore and aft. 



a 



(C ii 



Breadth of 



crown of lower first premolar, . 



Length 



a 



a 



ii 



Breadth 



a 



a 



second " 



Length 



a 



u 



" " 



Breadth 



a 



a 



third " 



Length 



li 



a 



ii a 



Breadth 



a 



a 



sectorial molar, 



Length of fore cusp 



u 



ii ii 



Length of back cusp 



u 



ii a 



Breadth of crown of lower tubercular molar. 

 Length " " " " 



Lines. 



Lines. 



3 





Hi 



Hi 



U 



8 



58 





10 





25 





n 



11 



14 



17 



11 



15 



11 



11 



15 



13 



2J 





Ii 





6i 



6i 



31 



4 



9 



10 



5 



7i 



61 



6i 



2 



2i 



2i 



2i 



2i 



21 



Ii 



Ii 



5i 



5i 



3i 



4 



6i 



6i 



4i 



4i 



8i 



9 



4i 



41 



51 



5i 



Ii 



Ii 



1 



1 



^LUEODON. 



jElurodon ferox. 



A single superior sectorial molar tooth of a large carnivorous animal, distinguished 

 by the above name, apparently indicates an extinct genus and species, dijfferent from 

 any previously characterized. The specimen was discovered by Dr. Hayden in the 



