THE MALAYS, THE NATIVES OF FORMOSA, AND THE TIBETANS. 801 



they occupied in the region midway between the coast and the highlands of the interior. 

 They are said to have low brachycephalic heads, but no crania of these tribes have come 

 under my observation. 



The coast line of Borneo is peopled by Sea Dyaks, Bajaus or Sea Gypsies, and 

 Malays. To all appearance the coast tribes had settled at a period subsequent to the 

 immigration of the Kalamantans, Kenyahs and Kayans. Unfortunately the number 

 of specimens of the people of the coast under examination was too small to enable me 

 to formulate a wide generalisation. Mr Haddon states that the Sea Dyaks have broad 

 heads, with a mean cephalic index 83. The index of my only specimen of the skull 

 was 78*5, approaching the brachycephalic in its proportions, and thereby distinguished 

 from the dolichocephalic Kalamantans, in which group the Land Dyaks have been 

 included. 



The two skulls of the Bajaus at once strike the observer as distinct in type from 

 the Kalamantan Muruts and Dusuns. They were on a smaller scale, especially in 

 length, the parietooccipital slope was so steep as to be almost vertical, and the flattened 

 form of the occiput was obviously in part at least due to pressure applied during 

 infancy. Both skulls were brachycephalic, one indeed was hyperbrachycephalic, the 

 artificial flattening having doubtless contributed in part to the production of an antero- 

 posterior shortening of the cranium. 



If the Sea Dyak and the two Bajau skulls be classed as a group, the mean cephalic 

 index was 83*4, brachycephalic, and the mean vertical index was 81 "8. The nasal 

 index ranged from 48 to 54*2, and the mean, 51, was mesorhine ; the interzygomatic 

 breadth ranged from 123 to 139 mm., and the mean was 130*3 mm. ; the nasio-alveolar 

 length ranged from 64 mm. to 72, the mean was 68 mm. ; the mean maxillo-facial 

 index, 52'3, was leptoprosopic : the nasio-malar index ranged from 103 to 108*9, and 

 the mean was 106*4, mesopic : the gnathic index ranged from 96*9 to 102*2, and the 

 mean was 99, mesognathous : the orbital index ranged from 86 "8 to 100, and the mean 

 was 93*9, megaseme : the palato-maxillary index ranged from 116*3 to 125*9, and the 

 mean was 121*2, hyperbrachyuranic. The coast tribes therefore may be said to be short- 

 or round-headed ; the nose moderately wide at the anterior nares and not projecting 

 at the bridge ; the face long in relation to the breadth ; the upper jaw moderately 

 projecting ; the orbits rounded, the palate shallow and with a wide arch. 



The two Malay skulls described in this memoir were brachycephalic, with a mean 

 cephalic index 86*7, and with a mean vertical index 85*2 ; the mean nasal index, 46*1, 

 was leptorhine ; the mean interzygomatic breadth was 140*5, the mean nasio-alveolar 

 length was 71, and the maxillo-facial index, 50*5, was leptoprosopic ; the mean nasio- 

 malar index, 107*4, was mesopic; the mean gnathic index, 96*9, orthognathous ; the 

 mean orbital index, 92, megaseme ; the mean palato-maxillary, 123*7, hyperbrachyuranic. 

 In most of these indices the Malays corresponded with the Sea Dyaks and Bajaus. 



The cranio-facial index was computed in these brachycephalic skulls. In the Bajau 

 M, marked Tali, it was only 75. In N it was 83*8 and in the Sea Dyak 80*8, materially 



