112 Anatomy of the Rabbit. 



(c) The five digits, designated from the medial side as: first 

 (d. primus), or pollex, second (d. secundus), or index, third or 

 middle (d. tertius s. medius), fourth (d. quartus), and fifth 

 (d. quintus s. minimus). 



5. In the posterior limb : 



(a) The division into three segments, the -thigh (femur), leg 

 (crus), and foot (pes). 



(b) The knee (genu), and the popliteal fossa of its posterior 

 surface, the latter not well defined. The projection of the 

 heel (calx), and the angle formed by the foot with the leg. 



(c) The four digits (dd. secundus-quintus) . The vestigial first 

 digit, or hallux, does not appear above the integument. 



