Scott. — Osteology of the Maori and Moriori. 31 



Nasal Index. 



The group of male skulls is leptorhine, as also is the 

 general average. The female skulls and the skulls of doubt- 

 ful sex are low down in the mesorhine group. 



The range of variation is 13-3. 



Twenty-seven skulls, or 64-3 per cent., are leptorhine ; 

 fifteen, or 35-7 per cent., are mesorhine; none are platy- 

 rhine. The anterior nasal opening is therefore narrower 

 in these Moriori skulls than in the Maoris that I have 

 examined. 



Professor Flower's eight skulls have an average index of 

 46-1 ; Professor Turner's eight give an average of 47"4 ; while 

 that of the five in the Paris Museum is 47'5. The average 

 when these four series are combined with mine — sixty-three 

 skulls — is 46-8, the same as that given by my collection alone. 



Gnathic Index. 



The above table of averages shows that all the divisions 

 are orthognathous, though close to the upper limit of the 

 group. 



The range of variation is 11. 



Nineteen skulls, or 46-3 per cent., are orthognathous. 

 Twenty-two, or 53-7 per cent., are mesognathous. Seven have 

 indices over 100, but none are actually in the prognathous 

 group. 



Seven of Sir William Flower's series allowed of the calcu- 

 lation of this index, and these yield an average of 99-2, some- 

 what higher than that of my set ; while Professor Turner's 

 have a mean index of 96, a trifle lower. The average of the 

 whole fifty-six skulls is 97-6. 



