A Method of Craniometry for Mammals. 



45 



as the exigencies of the case would admit ; but, owing to 

 the marked morphological differences between the skull 

 of man and that of the average mammal, certain modifica- 

 tions have been deemed advisable. The scheme, as sketched 

 below, has been found to work very well as far as the skulls 

 to which it has been applied are concerned. Whether it 

 will need to be modified or expanded, only actual experience 

 can show. 



-■ -la'T^bda. 



Bi-egrr^a. 



Sre|obar)ior). 



T)a3ioo 



■^l\)color holl9^. 

 Fig. 2. 



Q.^ 



Method. 



Fig. 3. 



The points from which it is suggested that measurements 

 should be taken are as follows (Figs. 2, 3, and 4) : — 



Bregma = where the sagittal and coronal sutures meet. 



Stephanion = the point where the ridge, which marks the 

 upper limit of the temporal fossa, crosses the coronal suture. 



I^asion = the mid-point of the naso-frontal suture. 



Alveolar point = the point on the suture between the 

 premaxillary bones immediately above the incisor teeth. 



Lambda = the mid-point of the suture between the occipital 

 and parietal bones (or between the occipital and inter- 

 parietal bones, if the latter is present). It is necessary 

 to consider the lambda as being behind the interparietal 

 bone, because of the inconstant character of this element 



