THE VARIETIES OF THE HUMAN SPECIES. 



41- 



The forms which follow are determined especially by the norma 

 lateralis; first of all is the 



nth. Trapezoid (trapezoides). 



The two parallel sides of the trapezium here correspond to the 



Fig. 25.— Trapezoides Sardiniensis. 



arch and the base of the cranium (Fig. 25), the two sides not 

 parallel are the sloping of the forehead, and the occiput more or 



Fig. 26.— Trapezoides Africus. 



less oblique. The type which I show is the trapezoides sardinien- 

 sis, a small microcephalous cranium. One important variation 

 of the trapezoid is that which I have called African (africus), 



