228 



HISTORY OF THE HUMAN BODY 



muscle, the pub o-ischio-femor alls 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-caudahs; cpit, caudali- 

 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-nbularis, 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 



