576 



Mr, D. M. S. Watson on some 



distinct sutures in several specimens, and apparently just 

 entering the symphysis. 



Fig. 2. 





A. Left ramus of lower jaw of Dj«/wo<?om, inner aspect. B. Right ramus 

 ol tbe same jaw, outer aspect. C. Left articular region viewed from 

 above and behind. X 2. 



For kev to reference-letters see tig. L 



The .suvangular is a thin plate of bone whose upper edge is 

 tljickened so as to form a ridge en the outer surface, nearly 



