THE ABORIGINES OF TASMANIA. 



413 



groove widened as it passed backwards to the lambda. The vault sloped downwards 

 from the lateral ridge to the parietal eminence, and had a roof-shaped form (fig. 1). 



The side walls of the cranium below the parietal eminences did not bulge outwards, 

 and the greatest transverse diameter, 131 mm., was in relation to them. The width 

 diminished materially behind the eminences, and the asterionic diameter was 103 mm. 

 The Stephanie diameter was only 100 mm., and the zygomatic arches were clearly seen 

 when looked at from the vertex, so that the skull was phsenozygous. The parietal 

 foramina were almost obliterated ; the vault sloped gently downwards to the occipital 

 squama in the post-parietal region, which was flattened from side to side, but had not 



Fig. 1. — Vertical transverse arcs of skull in Brussels Museum, reduced a little, ap. immediately behind bregma : 



mp. in mid-parietal region. 



been artificially produced. The supra-inial occipital squama bulged somewhat, the 

 lambdo-inial curve was 60 mm. in vertical diameter, the inter-asterionic transverse 

 curve was 140 mm. The inion was distinct : the linea nucha superior (torus occi- 

 pitalis transversus) was strong for 25 mm. from the inion, and then became so feeble 

 that the processus retromastoideus * was only faintly indicated. The linea nuchas 

 suprema was not a continuous line, but consisted of small nodules. The crista 

 occipitalis and linea nuchse inferior were distinct. The surfaces of attachment for the 

 semispinalis capitis, rectus minor, rectus major, and obliquus superior were clearly 

 marked. As the lines and other marks on the occipital bone were much more distinct 

 in No. 7 (Part I.) than in the Brussels specimen, I have reproduced a drawing of it 



* I may refer to Professor Waldeyer's recent memoir, Der processus retromastoideus, etc., Berlin, 1909, for a most 

 careful description and delineation of the nuchal and supra-mastoid regions, hased on the study of the skulls of 

 Papuans. I have in the text adopted his nomenclature. 



