1869.] HULKE STENEOSATJRUS KOSTEO -MINOR. 391 



the inner surface is less convex transversely than the outer, and 

 bears a deep longitudinal groove. The buccal surface is longitu- 

 dinally flat, and it rises gently towards its inner border, which 

 makes it slightly hollow transversely. The outer surface of both 

 fragments is smooth ; it has a close grain, and a fine longitudinal 

 striation. 



Dimensions of the Anterior Extremity of the Upper Maxilla. 



inches. 



Antero-posterior diameter of symphysis 1*8 



Maximum vertical depth of symphysis 2*3 



Length of fragment of intermaxilla 4 



Diameter of first and second alveoli in right intermaxilla. . 1*1 

 Width of nostril at level of its floor at posterior surface of 



fragment 1-8 



Width of nostril at angle where the inner and upper sur- 

 faces of intermaxilla meet 1*5 



Maximum width of nostril at angle where upper and outer 



surfaces meet 3-1 



Vertical depth of intermaxilla at posterior surface of frag- 

 ment 1-9 



Transverse diameter of intermaxilla at junction of upper 



and inner surfaces 1*3 



Do. do. at floor of nostril 1-65 



Max. vert, depth of nostril from its floor to meeting of 



upper and outer surfaces of intermaxilla 0*95 



Breadth of snout just behind symphysis 3 



Lower Jaw. — In the British Museum there is now, stripped of its 

 matrix, in continuous fragments, which have been cleverly joined 

 by Mr. Davies, a nearly complete right ramus, including the entire 

 non- tooth-bearing part, measuring 30 inches from its posterior ex- 

 tremity to the hindermost visible tooth *, with 4 inches of the tooth- 

 bearing part. Viewed from above, the dentary part, with 4 inches 

 of the ramus behind it, appears to be nearly straight, and from this 

 point the ramus curves outwards nearly to its posterior extremity, 

 where it becomes slightly inflected. When the straight, toothed part 

 is placed horizontally, the ramus behind it is observed to have a 

 large upward curve. The upper border of the jaw, traced from 

 behind forwards, exhibits first a gently inclined, slightly longitudi- 

 nally hoUowed and transversely flat postarticular surface, 2*7 inches 

 long, separated by a transverse ridge from a longitudinally concave 

 articular surface of nearly equal length, which looks forwards and 

 upwards. From this the border declines gently for about 5 inches, 



* The upper surface has been more recently cleared of the matrix behind the 

 tooth, exposing four more alveoli, which, with two, for which there is ample 

 space in an intermediate fragment on which the distal end of the femur lies, 

 make six, or perhaps seven, teeth behind the point where the symphysis pro- 

 bably begins, and lessens the length of the non-tooth-bearing ramus to between 

 22 and 23 inches. 



