146 



THE OSTEOLOGY OF THE REPTILES 



the symphysial ends of the pubis and ischium became connected in 

 many by Hgaments, or cartilage (Fig. 120), and later in some by 



Fig. 120. Pelvis and sacrum. A, Iguana (Lacertilia), pelvis from below; B, sacrum from 

 below. About natural size. C, Dicynodon (Anomodontia), pelvis, from above and from the 

 side. After Broili. Nearly one half natural size. 



bone, producing a false obturator or thyroid vacuity on each side. A 

 foramen or vacuity homologous with that in mammals, the so-called 



