ii6 THE SALAMANDER 



rotate the leg so as to turn the pre-axial side of the limb inwards and 



caudalwards. 



M. flexor accessorius lateralis (m.f.a.l.). Ribbing (1909). 

 This forms a small sheet of muscle arising mainly from the lateral 

 edge of thtfibulare^ while a few fibres take their origin from the fifth 

 basale and from the distal end of the fibula. The fibres pass obliquely 

 tibialwards to about the middle of the tarsus where the muscle is in- 

 serted on the/«ia<^/>/<^///^m of the M. flexor prim. comm. Indeed most 

 authors regard it as forming a part of the latter muscle, but, as Ribbing 

 correctly points out, they are clearly separated by the fibular nerve. 



Innervation : By the terminal twigs of R. medianus, N. fibularis. 



Function: It is accessory to the M. flex. prim, comm., with a dis- 

 tinct pronating action. 



M. flexor accessorius medialis (m.f.a.m.). Ribbing (i 909). 



Flechisseur interne des doigts ..... Perrin (1892). 



Plantaris profundus I, II, et III .... Eisler (1895). 



Plantaris profundus II McMurrich (1904). 



Together with M. pronator profundus = 



Pronator pedis ...... Humphry (1872). 



Together with M. flexor primordialis communis and M. pronator pro- 

 fundus = 



Flexor digitorum sublimis ..... Osawa (1902). 

 Together with M. pronator profundus and MM. flexores breves superficiales 

 may = 



Femoro-fibulae metatarsi I, II, III . . . Hoffmann (1873-8). 



This is a larger and more powerful muscle than the former whose 

 fibres run parallel with it and are separated from it by the M. caput 

 longum musculorum contrahentium. It arises from the distal two- 

 thirds oit\i& fibula on the ventro-mesial aspect of this bone, from the 

 fihulare^ intermedium^ and from the basalia III—V inclusive. It is 

 inserted over the dorsal surface of th.Q fascia plantaris on the tibial side 

 of the M. flex. ace. lat., while its insertion also extends rather more 

 proximally than this muscle. 



Innervation : By terminal twigs from R. medianus, N. fibularis. 



Function: Like the former muscle it is accessory to the M. flex, 

 prim. comm. with a distinct pronating action. 



MM. flexores breves superficiales (m.f.b.s.). Eisler (1895); McMur- 

 rich (1904); Ribbing (1909). 



Flechisseur de la I, II, III, IV, V phalange; Flechisseur du I, II, III, 



