22 Field Columbian Museum — Anthropology, Vol. II. 



narrow, in outline U-shaped. The digastric and occipital grooves are 

 in common; the mastoid foramina are absent. 



Sutures. — The coronal suture is exceedingly simple except just 

 above stephanion for a short distance, where it is slightly denticu- 

 lated. The sagittal and lambdoidal sutures are moderately complex. 

 There are two small wormian bones in the lower right lambdoidal, 

 one in the right masto-occipital just below asterion, and one in the 

 temporo-parietal just above asterion, and one in the left masto-occip- 

 ital just below asterion. 



Processes. — Mastoids are small nipple-like projections; styloids 

 small. The sphenoidal spines are long; one on the left side extends 

 back over the petrous bone, on the right it forms a crest for some 

 length and projects inwards over the foramen spinosum. The inter- 

 nal pterygoid plates are short and small, the external pterygoids 

 approach to within 5 mm. of the internal ramus of the lower jaw. 



Muscular Impressions. — The surface of the skull is generally 

 smooth. The temporal lines, however, can be made out in their 

 entire course. The inner and outer surfaces of the mandibular angle 

 are rough. 



Mandible. — Strong, compact, but small. There is practically no 

 mental protuberance nor any indication of mental tuberosities. The 

 mental foramina have their opening directed backwards. Internal 

 oblique line prominent. The angles of the mandible converge in a 

 remarkable manner and are only 61 mm. apart, as compared with a 

 distance of 70 mm. from the inner surface of one condyle to the other. 

 Height of ramus, 57 mm.; height of symphysis, 27 mm.; mandibular 

 angle, 128 . 



NO. 40,6 1 2.— Skull of adult female. Both zygoma have been 

 broken, and the lachrymals, ethmoids, turbinals and vomer were 

 destroyed in the bandaging of the jaws. The cranium is rather heavy 

 and has a capacity of 1,345 cc. The teeth are all in situ, in perfect 

 condition and slightly worn; except the upper and lower right inner 

 incisors, the alveoli of which contain plugs of wood. 



Norma Frontalis. — (See PI. VII, Fig. 1.) The frontal tubera are 

 well developed, very slight glabella and but little indication of super- 

 ciliary ridges. The orbits are circular and very slightly higher than 

 wide, index 102. Deep canine fossae. Face long and narrow. 



Norma Verticalis. — Oval, the parietal as well as the frontal tubera 

 being strongly marked. 



Norma Posterior. — The pentagon is not as well marked as usual, 

 for the superior angle is extremely open and the base is not depressed 



