232 THE MYOLOGY OF THE RAVEN. 



these teiiclons in place, over the trochlea, to the middle 

 of the shaft of the second phalanx of the second toe. 

 Here it makes fast to the sides of this l3one as well as 

 forming a tul)nlar sheath for the passage of the deep 

 flexor. 



When this mnscle alone contracts, hy r)nllLno' on the 

 second phalanx of the second toe it tends to flex it ; 

 when all the flexors of the limb act, it no doul)t is an 

 eflicient auxiliary to the same end. 



117. The jiexor longus hallucis^ is a strong muscle 

 at the back of the leg, overlain l)y two other flexors of 

 the toes, presently to be described, which take origin 

 from its side. It arises l)y two very distinct tendinous 

 heads : the one, a median one from the posterior aspect 

 of the femur, immediately between the two condyles : 

 the other from the outer aspect of the external condyle 

 of the femur, just below the origin of the preceding 

 muscle. The deep flexor passes up between these two 

 heads, or rather passes down from its origin. 



The Jiexo)' longus hallucis now forms a large fusiform 

 muscle at the back of the tibia overlying the deep flexor. 

 At the lower third of the leg it comes to a gradual point, 

 to terminate in a strong tendon, that passing beneath 

 the more superficial flexors, in a special canal on the 

 outer side of the tibial cartilage, goes through the 

 outer and large canal of the hypotarsus, next to the 

 shaft and directly down to the apex of the accessory 



^ "53i. M, FLEXOR HALLUCIS LONGUS. 



Flexor hallucis longus. Gurlt, p. 31. 



De Man, p. 133, No. 22. 

 Garrod, F.Z.S., 1872, p. 363. 

 Flexor digitorum communis profundris (pt.). Quennerstedt, p. 45. 

 Le flcchisseur profond du pouce. Alix, p. 459. 



Flexor perforans digitorum (pt.). Watson, p. 124." (Gadow, loc. 

 cit., p. 197.) 



