MUE^NOSAUEUS. 



85 



specimen there are traces of union with the upper end of the columella. For about 

 2 centimetres in front of the surface for union with the supraoccipital the cranial 

 surface is concave in all directions ; anteriorly it passes into the broad funnel-shaped 

 inner opening of the pineal foramen, the sides of which are formed by strong ridges 

 which are continued forwards on to the ventral face of the frontals (PI. III. fig. 2). 



Text-iig. 46. 





B. 



/^^/ n 



ar. 



nan 



Semi-diagrammatic restoration of the skull and mandible of M 



iirasnosawiis : 



A, from above ; 13, from left side. (About ^ nat. size.) 



awj., angular; art., articular; hoc, basioccipital ; cor., coronoid process of splenial ; dent., deutarj- ; 

 /., frontals ; j'., jugal ; m^., maxilla ; nar., external nares ; ori., orbit: par., parietals ; j;./., pineal 

 foramen; pmx., premaxillEe ; po.f., postfrontal ; p.orh., postorbital ; pr.f., prefrontal; q., quadrate; 

 sq., squamosal. 



