CONDYLAHTHEA. 4'd7 



third of the superciliary border, and the anterior half of the roof of the 

 orbit. The anterior edge of each nasal bone is wide, and is notched. The 

 width continues posteriorly to above the antei'ior part of the orbit, where 

 it increases. Above the middle of the orbit the nasals begin to nan'ow, and 

 they terminate a little behind the line of the postorbital angles, with a twice 

 angular outline. - 



The incisive foramina are narrow and extend to the third incisor inclu- 

 sive; they are separated by a very narrow septum. The anterior infraor- 

 bital foramen is large, and issues above the middle of the first true molar. 

 The posterior part of the squamoso-parietal suture has a raised squamosal 

 border, and two or three postparietal foramina enter at this point. There 

 are two or three strong postsqiiamosal foramina, and a small supraglenoid, 

 much like that of the species of Andiitlierium. The foramen magnum is a 

 transverse oval. Its superior border is notched medially. The foramina 

 rotundum and ovale are not large and of subequal size. The former is 

 OTiXy a little nearer to the latter than it is to the carotid groove (or foramen). 

 The jugular foramen is smaller than either. The postglenoid foramen is 

 situated at the posterior side of the internal base of the postglenoid process. 

 It is about the size of the F. rotundum. The F. condyloicleimi enters the for- 

 amen magnum at the middle of its side, and is small, like the F. jugiUare. 



Mandihle. — The horizontal ramus is slender, and the inferior outline is 

 slightly convex below the true molars. It is slightly concave below the 

 front of the coronoid, but descends again to the full and rounded angle. 

 The outline is then not like that of Corypliodon. The symphysis has a very 

 gradual rise. The coronoid process is at its anterior base broadly truncate. 

 The flattening narrows as it ascends and becomes oblique at the summit, 

 presenting outwards. The anterior margin is here strongly curved, even 

 descending a little to the posterior apex. The third concave posterior bor- 

 der descends to very near the anterior border of the condyle. The internal 

 extremity of the condyle is more robust than the external, and overhangs 

 the flat internal face of the angle. The external extremity is the summit of 

 a short vertical ridge, which disappears below. The masseteric fossa is 

 only defined anteriorly, and there is no distinct internal pterygoid fossa. 

 The condyle is elevated as far above the tooth-line as it is below the apex 



