Transactions. — Zoology. 



Not only does the table show that the index of each 

 vertebra is higher in the Maori, but also that, while in the 

 European only one vertebra — the first — has the posterior sur- 

 face of its body distinctly deeper than the anterior, in the 

 Maori, on the contrary, there are three — the first, the second, 

 and the third — deeper posteriorly than anteriorly. 



In Sir William Turner's Maori the first and second vertebrae 

 are also deeper behind than in front, the third and fourth are 

 of equal depth on both surfaces, and the fifth is deeper in 

 front than behind. 



The following table shows to what extent the individual 

 vertebrae agree with the average. 



First lumbar vertebra 



Second „ 



Third 



Fourth 



Fifth 



Anterior Depth 



of Body greater 



than Posterior 



Depth. 





 

 



5 (41-7%) 

 12 (100%) 



Anterior Depth 



of Body equal 



to Posterior 



Depth. 





 



3 (25%) 

 5 (41-7%) 

 



Anterior Depth 



of Body less 



than Posterior 



Depth. 



12 (100%) 

 12 (100%^ 

 9 (75%) 

 2 (16-7%) 

 



Looking now to the sexual differences as shown by the 

 measurements, we find the average general index of the seven 

 males to be 106-2, while that of the five females is 104-4. The 

 relatively greater posterior depth is therefore shown by the 

 lumbar vertebral bodies in both sexes, but the females have it 

 in a less decided degree than the males, though, as before 

 noted, the lowest index in the whole series belongs to a male 

 column. 



The table below gives the average indices of the individual 

 vertebrae grouped according to sex, and shows that though both 

 sexes clearly have their lumbar vertebrae built on the savage 

 type, yet that those of the Maori woman, like her European 

 sister's, are shaped in a manner more favourable to the 

 lumbar curve than those of the male. 



