1899.] 



rHOM THE LOXDON CLAY OF SHEPPBX. 



777 



and on the exposed (right) side the postorbital and zygomatic 

 processes, together with the outer half of the quadrate, are much 

 abraded. 



rig. 1. 



p. o.p. 





H 



ch.p. 



Skull of Prophaetkon shrubsolei, from above. Natural size. 



ch.p., cerebellar prominence; j., jugal; l.s., surface for articulation with 

 lachrymal; »., external nares ; n.g., narial groove; r.h., rostral binge; 

 sq., squamosal ; t.f., temporal fossa ; p.o.p., postorbital process. 



The occipital surface (Plate LI. fig. 2) of the skull is wider 

 than it is high. The sessile occipital coudyle {oc.c.) is nearly 



