THE BRITISH MAMMALS PAST AND PRESENT. 99 



STYLODONTID&. 



Stylodon pusillus (Middle Purbeck). 

 Stylodon robustus (Middle Purbeck). 

 Leptocladus dubius (Middle Purbeck). 



SPA LA COTHER1IDM. 



Spalacotherium tricuspidens (Middle Purbeck). 

 Spalacotherium minus (Middle Purbeck). 

 Peralestes longirostris (Middle Purbeck). 



STEREOGNA THID1E. 



Stereognathus ooliticus (Stonesfield Slate). 



