14 Field Columbian Museum — Anthropology, Vol. II. 



edly prominent occipital tubercle. At inion the curve changes rap- 

 idly in a forward direction, flattened somewhat over vertex. Zygo- 

 matic arches slender and delicate. Pronounced alveolar prog- 

 nathism. 



Norma Inferior. — Foramen magnum elliptical, measures 34 x 28 

 mm. The posterior borders of the condyles are much depressed — 

 platybasic deformity. On the right side the foramen spinosum opens 

 into a backward slit-like prolongation of the foramen lacerum. The 

 apex of the left petrosal bone is defective and does not cover, except 

 by a bony spiculum, any portion of the carotid canal. The glenoid 

 fossa is deep and slightly circular, and on the left side the condyle is 

 almost at right angles to the glasserian fissure. On both sides there- 

 is a well-defined postglenoid process. The hard palate is hyper- 

 bolic in form, almost U-shaped, and is but 14 mm. in its deepest 

 part, and slopes gradually to the incisor alveoli. 



Sutures. — The coronal is exceedingly simple, the sagittal is some- 

 what complex and the lambdoidal for the greater part is from 10 to 20 

 mm. in breadth and is extremely complicated throughout its length by 

 wormian bones. These begin at lambda as large simple bones, but 

 toward asterion on both sides they become long and narrow, or 

 replaced by numerous ossicles. At left asterion there are two large 

 and two small individual wormian bones. Synostosis has begun in all 

 the sutures in the region of pterion. 



Processes.— The mastoids are moderately sized. The left is rather 

 more rounded than the right, which is slightly compressed from side 

 to side. The digastric and occipital grooves are very shallow. The 

 external pterygoid plate is much below the average in size, while the 

 internal plate is reduced to a mere crest-like spinous process. The 

 suture of the internal pterygoid is still open on its anterior and pos- 

 terior aspects. 



Muscular Impressions. — As a rule faint, inion is simply a rough- 

 ened portion of the occipital protuberance. The occipital lines are 

 not ridges in any sense of the term, but rather swellings. The tem- 

 poral lines can be distinguished throughout their length but are not 

 at all prominent. 



Mandible. — Small and weakly formed. The condyles are short 

 and broad to correspond to the form of the glenoid fossse. There is 

 a slight mental protuberance and but little trace of the tubercles. 

 The sigmoid notch is broad and but slightly concave. The coronoid 

 process is almost pyramidal in shape owing to its thickness. The 

 mental foramina are immediately beneath the second premolars. 



