ELEPHAS PRIMIGENIUS.-MANDIBLE. 143 



Fig. 42. Fig. 43. Fig. 44. 



H. primiffenius, lUord. (British E. primigenius,\\iovA. (British ^. an^uMS, British, (Collection of 

 Museum Collection, No. ^.) Museum Collection, No. ^y.) Geological Society of London.) 



Fig. 45. Fig. 46. 



E. Asiaticns. (Collection of Royal College of 

 Surgeons, No. 2664.) 



E. Asiaticus. (Collection of Royal College of 

 Surgeons, No. 2674.) 



constantly varies, as will at once be very apparent from the woodcuts from p. 135 to p. 140 ; 

 indeed, as a means of diagnosis the numbers and positions of the mental foramina are not 

 reliable in any one species, recent or extinct. 



The following table gives the measurements of mandibles of the three extinct British 

 species and the jaw of the Asiatic Elephant, with the view of showing the comparisons of 

 the more important parts in individuals of about the same relative ages. 



