198 COMPARATIVE DENTAL ANATOMY 



ject forward (Fig. 80). The molars are large 

 (macrodont) ; the roots of the third molar are 

 distinct, and the molars are of the same size, or 

 increase from front to back. The second molar 

 below usually has the fifth cusp. The third mo- 

 lars are usually of good size, as large or larger 

 than the other molars, and fourth molars are not 

 uncommon in the black races. The canines are 

 large and conical, the teeth are well set and reg- 



FlG. 80. — Skull of Fan Tribe, West Africa. 



ular, and the anterior teeth stand apart. The 

 arch is parallelogram in form, with square cor- 

 ners, and the prognathism is well marked. The 

 facial bones partake of the general dolichocephaly 

 of the cranium (Figs. 81 and 82). The prom- 

 inence and massiveness of the mandible is such 

 that the wear of the lower incisors is ofttimes to- 

 ward the inside, and of the upper incisors toward 

 the labial surface. The alveolar process is thick- 



