THE MUSCLES OF THE LOWER EXTREMITY. 243 



the last-described muscle close up to its head. It is 

 considerably smaller in size, and its outer fascia sooner 

 terminates in its flattened tendon. This takes its course, 

 as I have already described, closely applied to the 

 jiexoT 'perforatus annularis primus pedis, through 

 the tibial cartilage and hypotarsus of the tarso-meta- 

 tarsus. Arriving at the palmar aspect of the basal 

 joint of the third toe, it sends down a slip to either 

 side of its shaft, which thus forms a guide for the 

 passage of the two deeper flexors which glide between 

 them. 



The carneous portions of the three last-described 

 muscles are quite intimately bound together by a 

 close-fitting and firm fascia. So that there is con- 

 siderable unison in their action, but, as we have seen, 

 the course of their tendons is more or less independent. 

 If it were possible to keep the distribution and in- 

 sertion of these tendons in our mind, it would not be 

 far out of place to speak of their common muscular 

 portion as the jlexor 2^e7]fo7^atus pnnnius jyedis. 



120. The Jlexor j^e^Joratus medius secundis ^9ec?{.v ^ 



Flexor communis quattuor digitorum s. suhlimis (pt.). d' Alton, p. 37. 



Flexor digiti secundi et tertii brevior (pt.). Gurlt, p. 31. 



Flexor perforatus s. longus digit07-um i^t.). Owen, 



Flexor perforatus digitorum (innerer Kopf). De Man, p. 131, No. 



20. 

 Flechisseur perfore, couche p/rofonde (pt.). Gei"vais et Alix, p. 36. 

 Flechisseur de la deuxieme p)halange du doigt interne (Struthio) ; du 



doigt troisieme (Ardea). Alix, pp. 457 et 460. 

 Flexor digitorum suhlimis (pt.). Quennerstedt, p. 42 ; Neander 



p. 25. 

 Flexor perforatus digiti III. Gadow, No. 37." 



^ The synonymy of Gadow is thus recorded {loc. cif., p. 192): — 



** 526. M. FLEXOR PERFORANS ET PERFORATUS DIGITI III. 



M. sextus circa tibiam et fibulam. Steno. 



Flechisseur perforant et p)erfore (pt.). Yicq d'Azyr, 284, No. 4. 



R 2 



