THE HIND FOOT OR PES. 



[chap. 



which all five digits are developed ; but when the hallux is 

 wanting, the internal cuneiform may be rudimentary or 



altogether absent. 



Fio. 114 —Bones of a right human foot, showing the epiphyses, ^. T tarsus; M 

 metatarsus ; Ph phalanges ; c calcaneum ; a astragalus ; rb cuboid ; n navicular ; 

 6"' internal cuneiform ; c' middle cuneiform ; c3 external cuneiform ; the digits are 

 indicated by Roman numerals, counting from the tibial to the fibular side. 



The three cuneiform bones support the first, second, and 

 third metatarsals respectively, the cuboid supports the fourth 

 and fifth ; they thus exactly correspond with the four bones 

 of the distal row of the carpus. 



In addition to these constant tarsal bones, there may 

 be supplemental or sesamoid bones ; one situated near the 

 middle of the tibial side of the tarsus, largely developed in 

 many Carnivora and Rodents ; another, less frequent, on the 

 fibular side ; and a third often developed in the tendons 



