20 RECORUS OF THE AUSTRALIAN MUSEUM. 



on the parietals between the parietal eminences and the 

 vertical mesial ridge is well marked on both sides, and it 

 extends to the posterior limit of the eminences. The frontal 

 eminences are fairly well marked, and are situated between 

 the flattened boundaries of the triangular area and the 

 temporal curved lines. These lines run across the most 

 prominent parts of the parietal eminences. Both the superior 

 and inferior limbs are represented, and the division takes 

 place far forward on the frontal bone. The sagittal suture 

 runs in a shallow groove, narrow in front, but growing 

 gradually wider towards the lambdoid suture by reason of the 

 separation of the low ridges which mark its lateral boundaries. 

 Apart from this shallow grooving, the region of the obelion is 

 uniformly rounded. The whole of the posterior parietal and 

 asterionic regions is also rounded. The maximum transverse 

 diameter, 136 mm., is between the parietal eminences and the 

 parieto-squamous suture. At the eminences it is 136 mm., and 

 at the parieto-squamous suture it is 135 mm. There is no 

 distinct ridge at the lower angle of the parietal, such as exists 

 in the skull marked B. 3'i96. The zygomatic arches stand 

 out prominently when the vertex of the skull is viewed at a 

 distance of a metre from the eye. There is only one parietal 

 foramen. It is on the right side, and it is small in size. Apart 

 from a slight bulging of the supra-inial portion immediately 

 behind the lambdoid suture, the whole of the occipital bone 

 is fairly uniformly rounded. 



Norma lateralis. — (PI. x., fig. 1.) The forehead is flattened 

 above the glabella. The glabella and superciliary ridges are 

 confluent, and are marked off from the supra-orbital border 

 by a wide, shallow groove. The trigonum on each side is 

 distinct, and the external orbital processes are thick. The 

 supra-orbital depressions are shallow. The nasion is deeply 

 and acutely depressed. The internasal suture, measured in a 

 straight line, is 12 mm. long. The left nasal bone is 6 mm. 

 wide at its inferior margin ; the right, which is imperfect, had 

 been 9 mm. wide. The profile outline of the nose in concave. 

 The bones do not form a ridge at their sutural junction. The 

 frontal longitudinal arc of the skull is the longest, and the 

 parietal is next to it, the occipital being much the shortest. 

 The mastoids are not well developed. The skull rests on the 

 teeth and the occipital condyles. On the left side there is a 



