THE MUSCLES OF THE LOWER EXTREMITY. 



239 



" The fibres of this vinculum come off from the tendon 

 of the flexor longus hallucis, and pass downwards to 

 soon merge with the fibres of the tendon of the flexor 

 perforans digitorum profundus at the crossing. 



Fig. 65 ter. 



11L 



Fig. 65 quat. 



Fig. 6^ quin. 



FIG. 65 ter. Right foot of Mcgalwmi asiatica, showing an arrangement of tlie 



plantar tendons. 

 FIG. 65 quat. Left foot of Gnllus bankiva. Vn, vinculum running downwards 



from the outer hallucial tendon to the inner digital common tendon. 

 FIG. 65 quin. Right foot of Aptc.ryx mantclli. (All three figures copied by the 



author from Garrod. ) 



" The strength and size of the vinculum is different 

 in nearly ever} 7 group of birds where it is present. In 

 Fig. 65 bis, at a, I have shown the position and size of 



