TJie Indians of Cuzco 15 



and 1. 5 7c suprainedium. In one male the forehead is recorded 

 as very sloping and in one as vertical. The vast niajoritv in 

 both sexes, however, have foreheads with medium slope, and 

 on the average the forehead of the female seems to be lower than 

 that of the male. 



Supraorbital Ridges. 

 The supraorbital ridges were recorded as imperceptible, small, 

 medium, supramedium. and pronounced. In the males 50.6% 

 show medium developed ridges. 12.9^^ submedium. and 36.5% 

 supramedium. In the females the results were 63. 3"^/^ medium. 

 17.67^ submedium. and 19.17 supramedium. The less developed 

 supraorbital ridges in the Ouichua female harmonizes with the 

 sex difference observed in other races. 



Mouth. 



The mouth is measured in a straight line from one angle to the 

 other. In the male the average width is 5.4 cm., the extremes 

 6.9 cm. and 4.5 cm., and the variation range 2.4 cm. In the 

 female the average is 5.1 cm., and the extremes 6.2 cm. and 

 4.3 cm., with a variation range of 1.9 cm. The mouth of the 

 female in general is smaller and shows a less range of variation 

 than that of the male. 



Racially the mouth width in the male varies from 46.9 mm. to 

 59. mm., and in the female from 47.2 mm. to 53.5 mm. The 

 Quichua therefore occupy an intermediate position in respect to 

 the size of the mouth. 



The following table shows that a wide mouth in both male and 

 female Quichua is generally associated with large features, as 

 a broad and high face, broad nose, and also with increased age. 



Stature. 



Of the 79 male Quichua measured, the maximum height was 

 (No. 132) 1825 mm., the minimum (No. 113) 1250 mm., with a 

 range of variation of 575 mm. and an average of 1584 mm. 

 While the maximum as here given exceeds that found by the 

 Expedition of 191 2 for the pure Quichua male (171 3 mm.). 

 and the minimum is less (1426 mm.), the average is practically 

 the same (1583 mm.). 



