OF THE BEAVER AND OF SOME SQUIRRELS. 



1197 



The feet of the Xerine Squirrels above described differ as 

 follows : — * 



a. Feet thinner ; inner lobe of plantar pad of hind foot large, the 



metatarsal pads retained but poorly defined Atlantoxems. 



a'. Feet stouter ; inner lobe of plantar pad of hind foot very 

 small, metatarsal pads absent. 

 h. Plantar pads smaller, pollex a relatively small subcylindrical 



excrescence TSuxeriis. 



h'. Plantar pads larger, pollex a conspicuous subcircular ex- 

 crescence Geosciurus. 



The feet of Xerus, typified by riotilus, fall under heading a of 

 this table. 



Text-figure 53. 



A. Right fore foot of JEuxerus erythropus. X k- 



B. „ hind „ „ 



C. ,, fore ,, ,. Geosciurus capensis. 



D. „ hind „ ,,, 



