730 PRINCIPAL SIR WILLIAM TUENER ON 



platyrhine, the mean of the series was mesorhine. The complete facial index could 

 not be taken; in the Kwi the maxillo-facial index, 51*2, was leptoprosopic, long- or 

 narrow-faced. The gnathic index, computed by Flower's method, was found in the 

 same skull to be 93 "4, orthognathous. The canine fossae were well marked. The nasio- 

 malar index ranged from 105"2 to 107'5, the mean was 106*1, practically platyopic or 

 Hat-faced. The fronto-malar border of the orbit was not thickened. Except in one 

 skull the infraorbital suture was obliterated. The intraorbital width ranged from 20 

 to 23 mm. The orbital index ranged from 87 '5 to 897, and the mean was 89, three 

 skulls were each megaseme. The hard palate was moderately arched. In one the 

 torus palatinus medius was present, the maxillo-premaxillary suture was distinct, and 

 the ovoid anterior palatine fossa was well marked, the palato-maxillary index, 132'j, 

 was hyperbrachyuranic. 



The cranial sutures were obliterated in the Tai Loi and the dental alveoli were 

 nearly all absorbed ; in the others the sutures were mostly denticulated, but in Mu Hso 

 they were simple ; in the Tame Wa those of the vault were partially fused, and the 

 alveoli were partially absorbed. In Mu Hso small Wormian bones were situated at the 

 junction of the lambda with the sagittal suture. The ali-sphenoido-parietal suture 

 was usually broad, and Kwi had a small right epipteric. No third condyl was present in 

 any specimen, and no paracondylar process, though in two the jugals were tuberculated, 

 no pterygo-spinous process or foramen was seen ; the occipital condyls were convex 

 and were not partially divided by a groove on the surface. The dental alveoli were 

 completely absorbed. 



The glabello-occipital diameter ranged from 158 mm. in a female to 181 in the 

 adult male, the mean in the four females was 168 mm. The greatest breadth ranged 

 from 133 to 145 mm., the mean of the series was 137 "8 mm. The cephalic index in 

 the adults ranged from 77 "3 to 82'4, and the mean was 8 I '2, brachycephalic. The basi- 

 bregmatic height in four skulls ranged from 124 to 136 mm., and the mean was 1307 

 mm. ; in each skull the height was definitely less than the breadth ; the vertical index 

 ranged from 71*3 to 77'9, and the mean was 757, i.e. in the lower range of the 

 hypsicephalic group. The breadth-height index ranged from 92*1 to 97'8, and the 

 mean was 94*2 ; in each case the index was distinctly below 100, so that they may be 

 designated platychamsecephalic, wide low skulls."* The cranio-facial index in four 

 skulls ranged from 70"3 to 747, and the mean was 72*9 ; in each the interzygomatic 

 breadth was less than the parieto-squamous, and the cranio-facial index was there- 

 fore less than the cephalic. In three crania regarded as females the capacity 

 ranged from 1120 to 1350 and the mean was 1296 c.c. ; the male had a capacity 

 1400 c.c. 



Of these skulls the male had the lowest cephalic index, 77"3, about the middle of 

 the mesaticephalic group ; the females, on the other hand, were definitely brachy- 

 cephalic in proportion and characters. The height was less than the breadth, a feature 



* See my memoir, "Craniology of People of Scotlaml," Trans. Roy. Soc. Edin., vol. xl., jjart iii., 1903. 



