54 



THE VARIETIES OF THE HUMAN SPECIES. 



which has the appearance of a tetragon, whence its name. The 

 cranium is high, the forehead as a rule erect, the occiput perpen- 

 dicular and very convex and depressed at the sides. It may be 

 confused with the cuboid when seen only from the norma later- 

 alis. But I must now omit a series of subgroups and limit myself 

 to the principal forms. 



II. Pentagonoides. — With regard to varieties, I have distin- 

 guished various pentagonoids, acutus, obtiisiis, oblongus, brachy- 

 pentagonoides ; and there may be stcgoids, cristati, etc. 



III. Rhomboides, — The rhomboids are also short, brachy- 

 rhomboides, or elongated in the anterior part, oblongus. 



IV. Ovoides. — Subvarieties of ovoids are found with wedge- 

 like occiput, ameattis, scalenus, stegoides, dcpressus. 



Fig. 47.— Sphen. Tetragonus. 



V. Sphenoides. — By the norma verticalis I have distinguished 

 sphenoides, stenometopus, sph. rotundus, spelatus, sph. niegas, sph. 

 oblongus ; an important subvariety is found in tetragonus (Fig. 47), 

 which is not only sphenoidal in the vertical, but also in the lateral, 

 and has prominent corners, rendering the vertex and sides plane. 



There is likewise a sphenoid, cyrtocephalus, which has a 

 convexity extending from the frontal and parietals to the vertex, 



