250 



MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



TABLE XXV. Length in millimetres of 28 pteria. Salado. 



TABLE XXVI. Ordination of 19 facial indices according to Virchon-. S&amp;lt;ildo. 



Variation, 28.40. Theoretical mean of variation, 117.05. Skull nearest to mean and median 

 of ordination, H. 41. Average, 117.64. 



TABLE XXVII. Seriation of 19 facial indices according to Virchotc. Salado. 



Maximum of frequency, 127. The seriation is so incoherent that the discussion of variation 

 as dependent on it has little significance. 



TABLE XX VIII. Ordination of 34 upper facial indices according to Virckow. Salado. 



Variation, 17.37. 

 Average, 69.82. 



Theoretical mean of variation, 70.90. Skull nearest to mean, H. 11. 



