Machiganga Indians of the San Miguel Valley 71 



Leg Circu-mference. 



The maximum circumference of the left leg in the male is 

 323.5, with extremes of 365 and 289. and a range variation of 76. 

 In the female the average is 309, with extremes of 340 and 267, 

 and a range variation of 73. This measurement is absolutely 

 larger in the male but the variation range is similar in the two 

 sexes. Hrdlicka found the average in American negroes to be 

 369, in American Indians 340, and in white men 360. In the 

 Quichua male this measurement averages 341 and in the female 



331- 



The stature-leg circumference index averages in the male 20.7, 



with extremes of 23.4 and 18.4, and a range variation of 5.0. In 

 the female the average is 21.55, the extremes are 26.97 and 18.01, 

 and the variation range 5.52. This shows that while the max- 

 imum calf circumference in the female is absolutely smaller than 

 in the male it is relatively to the stature greater. It is less in 

 both sexes than for the Quichua. 



Face Measurements and Indices. 



The average face height (menton-nasion) in the male is 125, 

 the extremes are 133 and 166, and the variation range is 17. In 

 the female the average is 116, the extremes are 124 and 109, and 

 the variation range 15. It is probable that the nasion has been 

 placed too high here in making the measurements, as seemed to 

 be true also in the case of the Quichua. The morphologic face 

 height is believed to increase to a slight extent with age, but of 

 course decreases with marked wearing of the teeth and the 

 edentulous condition. These dental factors were not operative 

 in any of the Machigangas measured. 



The face breadth (bizygomatic) averages in the male 14.1, the 

 extremes are 150 and 135, and the variation range 15. In the 

 female the average diameter is 133.5, ^he extremes 141 and 126, 

 and the variation range 15. The Quichua and Machiganga are 

 quite similar in this measurement, which is large in comparison 

 with that of other races. 



The menton-crinion measurement gives the physiognomic face 

 height. In the male this averages 178, with extremes of 192 and 

 167, and a variation range of 25. In the female the average is 



