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ANTHROPOLOGICAL PUBLICATIONS UNIVERSITY MUSEUM VOL. VI. 



All the above groups belong to megadont races, the high- 

 est index being reached by the Tasmanians; and in each 

 series, as might have been inferred, the average dental index 

 of the female crania is higher than that of the males. A like 

 relation of the dental index in the two sexes holds true among 

 anthropoids also, as pointed out by Sir William Flower. 



The Spina mentalis is either wanting or barely visible. 

 The angle of symphysis is large, being equal to or exceeding 

 a right angle in 47 per cent of the lower jaws. The average 

 for the males is 85.3 degrees and for the females, 89.6. A com- 

 parison of these figures with results for other series including 

 Quaternary man places the series from Gazelle Peninsula very 

 near to the latter: 



Summary. The skulls are small and all dolichocephalic. 

 The minimum and maximum frontal diameters average respec- 

 tively 20.3 mm. and 25.7 mm. less than for English crania. 

 The height averages greater than the greatest breadth, a char- 

 acter called hypsistenocephaly. The crania are prognathous, 

 platyrhine, platyopic, phaenozygous, and megadont. Glabella 

 and superciliary arches, prominent. Apertura pyriformis, 

 simian in character. Fossae caninae, pronounced. The teeth 

 are well preserved and not crowded. The wisdom teeth are 

 lacking in none. There is a tendency toward a division of 



