16 Field Columbian Museum — Anthropology, Vol. II. 



Muscular Impressions. — Well marked throughout, especially in 

 the occipital region where the curved lines and protuberances are 

 extremely rough. The insertions for both the masseter and internal 

 pterygoid muscles are strongly indicated. 



Mandible. — Strongly developed; height of symphysis, 31 mm.; 

 mandibular angle, 120 . Very slight mental protuberances and no 

 indication of mental tuberosities. 



NO. 40,620. — Skull of an adult male of unusual size and weight. 

 Cranial capacity, 1,560 cc. The lachrymals and interior nares are 

 destroyed. The following teeth are in situ: upper canines and right 

 premolars and left second premolar; lower second and third right 

 molars and first and second left molars. These teeth are sound and 

 very slightly worn. The upper third molars have never erupted. The 

 alveoli of the other teeth are all sound, with but one exception. The 

 exception is in the case of the lower right first molar and second pre- 

 molar. There is a deep circular excavation here and the jaw has 

 been fractured between these two teeth. The line of the fracture can 

 still be plainly seen both on the labial and buccal side of the jaw, 

 which has in its outer aspect a globular appearance. 



Norma Frontalis. — The face is broader and much fuller in the 

 frontal region than usual. This is due both to the comparatively full 

 development of the frontal tubera and to the absolute width of the 

 frontal bone, the minimum diameter of which is 103 mm. The glabella 

 is not prominent, yielding as a median depression between the sharp 

 supraorbital crests. The orbits are long and narrow, with axes 

 inclined to a considerable degree. The nasal bones are well formed, 

 with prominent, acute bridge. The openings are round, with diminu- 

 tive nasal spine. Canine fossae somewhat depressed; long alveolar 

 process, but not highly prognathic. 



Norma Verticalis. — While the length is about normal for these 

 skulls, 187 mm., the maximum breadth is much above the average, 

 being 140 mm. The parietal eminences are well indicated but not 

 sharply rounded. The bizygostephanic index is 82 — the highest of 

 the series. 



Norma Posterior. — The pentagonal form almost disappears in the 

 very open angle of the vertex, the cranium being broader than it is 

 high, and the maximum diameter exceeding that of the asterionic by 

 only 34 mm. 



Norma Lateralis.- — The frontal development is very striking and 

 ends anteriorly to bregma. From that point to half the distance of 

 the sagittal suture the curve disappears entirely. The posterior two- 



