THE ABORIGINES OF TASMANIA. 



415 



Norma facialis. — The floor of the nose was not separated from the incisive region 

 by a sharp ridge, but was continuous with it by a smooth area ; the maxillo-nasal spine 

 was feeble, the anterior nares were wide, and the nasal index 60"9 was strongly 

 platyrhine. The complete facial index was 81 '8, the maxillo-facial index was 47'2 ; the 

 index of both the complete face with the lower jaw, and of the upper face without it, 

 was mesoprosopic, i.e. the face was moderately high in relation to the interzygomatic 

 breadth. The gnathic index, computed by Flower's method, was 104 "2 ; the incisive 

 fossae were shallow, and the eye recognised the prognathic character of the upper jaw. 

 The canine fossae were moderately deep. The nasio-malar index 109*4 expressed the 

 mesopic or moderate nasal profile. The fronto-malar border of the orbit was thickened, 

 the infraorbital suture was obliterated; the intraorbital width was 24 mm., the 

 vertical diameter of the os planum was 12 mm. ; the orbital index 86'1 was mesoseme, 

 i.e. an orbit in which the width moderately exceeded the height. The hard palate 

 was elongated, index 106 '9, dolichuranic, moderately deep. The torus palatinus 

 medius was a narrow mesial ridge on the horizontal plates of the palate bones, which 

 expanded on the superior maxillae into a broad elevated surface, which was separated 

 from the alveolar border by a groove-like depression. The maxillo-premaxillary suture 

 was either obliterated or showed a mere trace. The anterior palatine fossa, moderate 

 in size, was triangular in shape, and the premaxillary part of the hard palate was short. 

 The crista palatina transversa was not marked, but in Nos. 4, 5, 7 in Part I. it was 

 strong. In the mandible the chin was feeble and only slightly projected in front of 

 the alveolar border, the angle was incurved and somewhat obtuse, the ascending ramus 

 and the marks for the masticatory muscles were moderate. The mental foramen was 

 below the second praemolar tooth, and 24 mm. behind the symphysis. The inner 

 surface of the bone at the symphysis had a genial prominence. 



Teeth. — The teeth were all in place except the upper left middle incisor and 

 wisdom, the sockets of which were empty, and the 1st lower right premolar, the 

 socket of which was absorbed. They were regular in arrangement, and the crowns 

 were flattened from use. The lower wisdoms had two buccal and two lingual cusps ; 

 the upper wisdoms had two buccal cusps, but the lingual were fused into a single large 

 cusp. The sockets for the upper wisdoms were at the end of the maxillary tuberosity, 

 in close relation to the pyramidal process of the palate bone. The diameters of the 

 crowns of the premolars and molars were as follows : — 





Upper. 



Lower. 



Ant. Post. 



8 mm. 



8 „ 

 11 >, 

 11 „ 



8 „ 



Trans. 



Ant. Post. 



Trans. 



1st premolar, .... 

 2nd „ .... 

 1st molar, .... 

 2nd „ .... 

 3rd „ .... 



10 mm. 



11 „ 



12 „ 

 12 „ 

 11 „ 



8 mm. 

 7 „ 



11 „ 



12 „ 

 10 „ 



9 mm. 



9 „ 

 11 „ 

 11 „ 

 10 „ 



