310 



ON THE EXTINCT MAMMALIA OF 



Height of do. at back of last molar, 

 Height of do. at first small premolar, 

 Breadth of alveolar portion of sjanphysis, 

 Breadth of symphysis where narrowest, 

 Length of symphysis, 

 Length of sei'ies of seven upper molars. 

 Hiatus between do. and the canine, 

 Length of series of seven lower molars. 

 Hiatus between do. and the canine. 



Measurements of molar teeth derived from 

 series are as follow : 





Lines. 



Lines. 



Lines 







14 J 





8 



7i 



8 





7 



7 







4 



4i 







12 



12 







34 i 





34 





. 8 









34J 





34 





. 10 







several of the more perfectly preserved 

 Adult. Adult. Aged. Milk. Milk. Adult. 



Length of upper series of seven molars, . 

 Length of upper series of six large molars. 

 Length of upper series of three back molars. 

 Length of lower series of seven molars, 

 Length of lower series of six large molars, 

 Length of lower series of three back molars, 

 Ant.-post. diameter upper small premolar, 

 Transverse " " " 



Ant.-post. diameter lower small premolar, 

 Ant.-post. diameter upper first large molar. 

 Transverse " " " 



Ant.-post. diameter upper second large molar, 

 Transverse " " " 



Ant.-post. diameter upper third large molar, 

 Transverse " " " 



Ant.-post. diameter upper last molar. 

 Transverse " " " 



Ant.-post. diameter lower first large molar. 

 Transverse " " " 



Ant.-post. diameter lower third large molar. 

 Transverse " " " 



Ant.-post. diameter lower last large molar. 

 Transverse " " " 







o 







Large in 

 dividual 



Lin. 



Lin. 



Lin. 



Lin. 



Lin 



Lin. 



. 34J 





33J 









. 31J 



311 



m 









. 16 



16 



16i 









. 35 













. 33 



33 











. 17J 



17i 



161 









. 3i 





2i 









. 11 













. 6 



6 



6 



6i 



61 



61 





6 



6i 



51 



5 



7 



. 6 



51 



51 



6i 



6 



7 





6i 



6^ 



64 



5i 



7i 



. 6 



51 



51 



6i 



6 



7 





&i 



7 



6i 



6 



8 



. 5i 



5i 

 6^ 



51 

 U 









. 6i 



5i 

 3i 











. 6 



5J 

 4J 



5 

 4J 









. 6i 



7i 

 3J 



7 

 3i 









