180 THE MYOLOGY OF THE RAVEN. 



length of something over two centimetres, with a corre- 



o o 



spending width of about one centimetre, while in thickness 

 it does not exceed twenty-five millimetres. The raphe 

 is continued on, as a slender tendon, to the inner side of 

 the shaft of the tibia, where it becomes inserted. 



10i2. Tlie semimembranosus l (Figs. 24 and 50) also 

 contributes to the contour of the posterior line of the 

 fleshy part of the thigh in the Eaven. It is a long, 

 narrow, somewhat ribbon-like muscle, that arises from the 

 outer surface of the ischium of the pelvis, from the lower 

 margin of its notch on the posterior pelvic border and 

 extending on a curved line on the surface beyond, 



1 As is well known, this is another muscle that Garrod describes 

 in his chapter on the value of muscles in classification, although this 

 one was but little used owing to the fact that it is quite constant 

 in the class. 



Gadow, who well describes it, gives us the following synonymy 

 (foe. cit., p. 1G6) : 



"38. M. ISCHIO-FLEXORIUS. 



M. se^timus tibiam movens. Aldrovandi. 

 M. quatuordecimus femoris. Steno. 

 Demi-nerveux (?). Vicq d'Azyr, p. 277, No. 3 (pt.). 

 Biceps (pt.). Vicq d'Azyr, 1774, p. 507, No. 3. 

 Kleiner Lendenmuskel (?). Merrem, p. 158, No. 4. 

 Flexor cruris tertius. Wiedemann, p. 97. 

 flexor cruris quartus. Tieclemann, 302. 

 M. demi-membraneux. Cuvier, p. 523. 



Ohne Namen. Meckel, System, p. 364, No. 4 ; Archiv, p. 270, No. 9. 

 Flexor cruris tibialis. d'Alton, p. 34. 

 Semimembranosus. Gurlt, p. 29 ; Selenka, p. 144. 



Quennerstedt, p. 27. 

 Neander, p. 17. 

 De Man, p. 127, No. 14; Garrod; Watson, 



p. 113. 

 Le droit interne. Gervais et Alix, p. 32. 



,, ., Alix, p. 442. 



M. ischio-Jlexorius. Gadow, No. 26." 



