306 Journal ok Comi^akative NEUuonxiY. 



N. POST-TIBIALIS. 



The cntal division of the popliteal nerve is muscular in 

 distribution. Ten mm. peripherad of its origin a large ramus 

 innerves the M. popliteus (Fig. Pop.), which lies just entad. 

 The trunk crosses the ectal surface of the post-tibial artery, 

 and 10 mm. peripherad it innerves the M. flexor longus digi- 

 torum (M. fl. long, dig.) by several pinniform ramuli. As 

 the nerve penetrates the flexor muscle a ramus is given to 

 the M. tibialis posticus, and still peripherad three or four 

 filaments are given to the M. flexor longus pollicis? — a 

 muscle whose tendon unites in the plantar surface with 

 the broad tendon of the long flexors (pollex is wanting in 

 the cat). 



The ectal division lies apposed to the post-tibial artery 

 and gives no rami centrad of the groove of the long flexor 

 muscle, in which groove are the tendon, the nerve and the 

 post-tibial artery. Peripherad of the groove the nerve bifur- 

 cates and lies upon the ental surface of the M. flexor brevis 

 digitorum. The cephalic ramus, 



N. INTER-PLANTARIS, 



innerves the short flexor muscles, lies along its cephalic 

 border, and terminates in cutaneous ramuli to the pads of 

 the second and third toes; a few filaments are directed 

 entad to the underlying muscle, the M. flexor accessorius 

 (fl. ac). 



N. PLANTARIS, 



The caudal ramus of the ectal division, lies upon the broad 

 tendon of the long flexor muscle and the second layer of 

 muscles. A slender ramus is given caudad to a small muscle 

 upon the distal end of the calcaneum — the fibres of this 

 muscle run transverse and the aponeurosis joins the broad 

 tendon of the long flexor. Near the proximal end of the 

 meta tarsalia a branch is given entad. 



