PLATE XLIII. 
1. Mastodon (Tetealophodon) perimensis (?) Falc. and Cant. Symphysis of man- 
dible. 
2. Mastodon (Tetralophodon) perimensis, Falc. and Caut. Symphysis of man- 
dible broken anteriorly, and showing in cross section two small tusks. 
Both specimens were obtained from the Punjab, and are represented of half the 
natural size. ' < 
