576 DESCRIPTION OF FIGURES OF SKULLS. 



humerus, which however has its olecranic fossa perforated, and with 

 the distal epiphysis of the radius. The sacrum is not complete, nor 

 the os innominatum, nor the clavicle, but the basi-sphenoid suture 

 is perfectly closed, though the wisdom teeth are not yet quite come 

 into actual use. 



This skull contrasts with the first-described in points charac- 

 teristic of sex, as also in its state of more perfect preservation, in 

 which point indeed it differs from most other skulls in this series, as 

 it does also in its alveolar prognathism. The supraciliary ridges 

 are smaller, the frontal and the parieto-occipital regions more 

 vertical, the height, though considerable, less, and the lower jaw 

 less powerful than is the case in the male skull of the same age. 

 In the norma verticalis the left half of the skull is seen to be, as is 

 not uncommonly the case, a little fuller and longer than the right ; 

 the parietal tubera are placed far back and prominent, but they do 

 not constitute the broadest part of the skull, which, as is usual 

 in well-filled brachy-cephalic skulls, lies on a level with the upper 

 and posterior angle of the squamous part of the temporal bone and 

 in a plane considerably anterior to that occupied by the parietal 

 tubera. The sides of the occipital pentagon converge somewhat 

 rapidly, a sexual characteristic, from this level of maximum breadth. 

 The slope, on the other hand, from the mesial sagittal line to the 

 parietal tubera on either side is a little more pronounced than is 

 usual in female skulls. The mesial sagittal line maintains its 

 elevation up to the coronal suture, and some little way forward on 

 to the frontal bone. A broad undulation may be observed on either 

 side in the vertical aspect of the skull between the parietal tubera 

 and the coronal suture ; it appears however to be due rather to the 

 prominence of the parietal tubera than to any depression such as is 

 often observable in this part of the parietal. Owing to the non- 

 development of an occipital tuberosity, there is a' difference of ^ 

 of an inch between the extreme and the fronto-inial lengths, a 

 point often observable in young brachy-cephalic skulls, but of no 

 real importance as compared with such points as the vertical 

 direction and flatness of the superior occipital squama, the back- 

 ward position of the parietal tubera, and the abrupt dip downward 

 of the parieto-occipital region immediately posterior to the level of 

 these tubera, and the very considerable relative height, all 

 characteristic of the brachy-cephalic type, and all recognisable 

 in this skull. 



The skull Weaverthorpe (Smith, xlvi) has not admitted of having 



