App. I. AGED FEMALE OF THE FAN TRIBE. 449 



become bevelled off to an edge, after tlie fasliion of 

 the scalpriform incisors of Rodents. 



The cranium, though smaller, resembles in general 

 form and proportions that of the male Fan. The 

 usual sutures, however, remain. 



The lambdoid is narrow, and the crenation hardly 

 grows to crenulation toward the lower and outer 

 end of the suture, where a small " wormian " is 

 wedged between the mastoid and super-occipital on 

 the left side. The occipital condyles are less convex, 

 more worn down, than in the male skulls, as if from 

 the practice of carrying weight on the head. The 

 lower curved ridge of the occiput is well defined, and 

 the surface between it and the foramen magnum 

 shows the usual characters of muscular attachment, 

 but there is neither an upper curved ridge nor occi- 

 pital spine, and the surface above the lower ridge is 

 convex, and smooth like the rest of the outer part of 

 the super-occipital. The mastoid processes are small; 

 the supra-mastoid ridges low and smooth ; the super- 

 auditory ridges very short. The parietal protuber- 

 ances are as little defined as in No. 24. The sagittal 

 suture is " crenate ; " the coronal suture is linear at 

 both ends, crenulate but narrow at the mid-part. 

 The apex of each alisphenoid joins the parietal; 

 the extent of the spheno-parietal suture not exceed- 

 ing three lines, that of the spheno-frontal suture is 

 ten lines. The malars are not protuberant ; on the 

 contrary, the outer surface of each is concave — a rare 

 variety.* 



The deficiency of masticating machinery has pre- 



• This character is less truly shown in fig. 7 than in fig. 8. 



