CHAPTER XIX. 



THE HIND FOOT OR PES. 



The terminal segment of the hind limb is the foot ox pes. 

 Its skeleton presents in many particulars a close resemblance 

 to that of the manus, being divisible into three parts : — r(i) a 

 group of short, more or less rounded or square-shaped 

 bones, constituting the tarsus ; (2) a series of long bones 

 placed side by side, forming the metatarsus ; and (3) the 

 phalanges of the digits or toes (see Fig. 114, p. 310). 



The metatarsal bones never exceed five in number, and 

 the phalanges follow the same numerical rule as in the 

 manus, never exceeding three in each digit. Moreover, the 

 first digit (counting from the tibial side), or hallux^ resem- 

 bles the pollex of the hand in ahvays having one segment 

 less than the other digits. 



The bones of the tarsus in rriany of the lower Vertebrata 

 closely resemble both in number and arrangement those of 

 the carpus, as shown in Fig. 85, p. 255. They have been 

 described in their most generalized condition by Gegenbaur 

 under the names expressed in the first column of the 

 following table.^ The names in the second column are 

 those by which they are most generally known in this 



^ " Untersuchungen zur Vergleichenden Anatomic." Carpus und 

 Tarsus. 1 864. 



