340 Records of the S.A. Museum 



SPECIMEN 7. 



Plate xlii. 

 Skull. Adult aet. c. 40-50. 

 Brachycephalic. 

 Capacity : 1290 cc. 

 Chinook: North America. Reg. A. 11431. 



This skull is introduced only for the sake of comparison. In norma 

 fcrticalis the specimen is a broad oval in shape, the long axis being transverse. 

 In niiniia lateralis one sees, not the long horizontally drawn out cranium, but a 

 wedge-shaped outline. The steeply ascending frontal contrasts sharply with 

 the long low slope of the previous specimens, and is succeeded by an almost 

 equally abrupt downward curve. The anteroposterior diameter is thus consid- 

 erably shortened, while the transverse is lengthened. The parietal eminences 

 are greatly exaggerated. 



The skull shows only slight muscular ridges; the glaliella and superciliary 

 margins are faintly marked. 



Tlie sutures are almost entirely ossified, and present along their course the 

 remains of numerous Wormian bones. In the coronal suture there are two 

 small epipteric bones at the right pterion, and some possible evidences (fused) 

 at the left. The lambdoid suture shows traces of what may have been an 

 "Os Incae bipartitum." 



In norma frontalis one notes especially the broad flat frontal surface 

 reaching a maximum breadth and height at the jiarietal eminences. On either 

 side is a supraorbital notch, and also a supraorbital foramen laterally placerl. 

 The orbits are large and quadrangular ; the malar bones are included in the 

 inferior orbital fissure, which is unusually wide. 



The nasal bones are long and prominent: the left has been brok-en and 

 repaired during life. The infraorl)ital foramina are exceedingly large, and on 

 the right side duplicated. 



The lower border of the nasal aperture is sharp-edged and single : the 

 subnasal spine prominent. 



In norma hasilaris there are few points ni importance: the foramen magnum 

 is a rounded oval. The teeth are small and peg-like, with evidences of medium 

 attrition. The palatine suture is irregularly cruciform ; the vomer is bifid at 

 its point of articulation with the sphenoid. There is a marked |)haryngeal spine, 

 and post-condyloid canals are present on either side. 



