1872.] 



THE BROAD-HEADED WOMBAT. 



501 



side is very distinct. This bone is perfectly separate from the supra- 

 occipital; but in Dr. Murie's specimen, if I may judge from the 

 plate (I. c. p. 844, fig. 1), it was ossified to the occipital. The tem- 

 poral crests are uot so much raised posteriorly as represented in Dr. 

 Murie's plate); and the sagittal suture is neither so deeply uor so 

 regularly toothed. Two exceedingly curious Wormian intercalary 



Fig. 2. 



Skull of Broad-headed Wombat, back surface. 



bones occupy the anterior seven lines of the suture, the entire length 

 of which measures 1 inch 4 lines. The large holes in the scpiamosal 

 are very like those in Dr. Murie's woodcut; they are more nume- 

 rous (eight) on the right side, and only six on the left. The occi- 

 pital crest is more distinctly curved in my specimen than in his. 

 The frontal bones are rounded at their coronal ends, the line of the 

 suture being distinctly convex backwards. The anterior sagittal 

 "Wormian bone projects forwards into this suture, and articulates with 

 another of these remarkable sutural bones, which exists in the frontal 

 suture at its posterior border, extending for 5 lines between the 

 frontal bones. In front of this the suture stretches for 5 lines, 

 when it is again interrupted by another Wormian bone, a long thin 

 slip, 1-| line broad and 8| lines long. This bone, however, is on the 

 surface of the suture merely, and does not penetrate into the entire 

 depth of the interspace between the frontals ; in front of it the 

 frontal suture extends for 7 lines. The supraorbital portions of the 

 frontal bones are very much raised and rough ; and the alispheno- 

 frontal suture extends to the postorbital process on the left side, but 

 is nearly obliterated on the right. A spur of the frontals is conti- 

 nued forwards in the middle line between the nasals : this is longer 

 (4 lines) and sharper on the left, smaller (2 lines) on the right. 

 There is no appearance of this "snibb" in any of the other crania; 

 and it is interesting to find such a process springing from two ossific 



