228 



HISTORY OF THE HUMAN BODY 



muscle, the pubo-ischio-femoralis internus, the fibers of which 

 part to accommodate the ilium, but reunite again upon the 

 outer side of this obstacle. This also inserts into the femur. 

 Aside from these, a narrow band, the pubo-tibialis, arises from 

 the lateral edge of the pubo-ischiadic plate, and inserts in the 

 tibia. From the ilium arise an ilio-extensorius, which inserts 

 into the femur, an ilio-femoralis, also to the femur, and 



FIG. 61. Ventral view of the pelvic muscles of Necturus. 



pife, pubo-ischio-femoralis externus; pifi, pubo-ischio-femoralis internus; pit, pubo- 

 ischio-tibialis; pt, pubo-tibialis; isf, ischio-femoralis; isc, ischio-caudalis; cpit, cauclali- 

 pubo-ischio-tibialis; cf, caudali-fermoralis; ra, rectus abdominus. Other designations: 

 gl, cl., cloacal gland; Pub., pubic portion of pubo-ischiadic plate; isch., ischiadic 

 portion of the same. 



an ilio-fibularis, a narrow band, which inserts into the proximal 

 end of the fibula. A femoro-fibularis, also band-like, arises 

 from the flexor side of the femur, and inserts into the fibula, 

 near the last. The only extrinsic muscles are found in a set 

 of three caudal muscles, which arise along the sides of the tail 

 not far below the pelvis, and run in a sheath anteriorly to the 



