286 



DAVIDSON BLACK 



Sin., say. S. }at 



JR.drs. 



S.SS 



S. cor. 



^:}^^' Sin. Say. 



"^■lect. ^Strj. ■«• la+.\For. ov. \M.a.i. \for.con, 



12 



Figs. 11, 12, 13 and 14 Camera lucida drawings of natural endocranial cast of 

 Oreodon, Specimen III, right lateral, left lateral, ventral and dorsal views 

 respectively. For photographs see figures 37 to 40. Abbreviations: A.m.m., 

 ridges corresponding to branches of the middle meningeal artery; Fos.peL, 

 eminence corresponding to subarcuate fossa of the petrous bone. Other abbre- 

 viations as before. 



