MCGEE) THE SERI SKULL 143* 



Suiiraorbital ridges almost absent; glabella convex. Nasion depression naediuni. 

 Orbits obliiiuely (inadrilateral ; their axes (internal inferior corner — internal superior 

 corner) meet at ophryon. Splieno-maxillary fissure, lachrymal canal, and nerve 

 foramina all above average in size. Nasal bones well bridged, very slightly concave; 

 nasal aperture regular; no "goutticrcs"; turbinated bones well formed; septum 

 wanting; spine 0.C.5 long, bifid at the end. Zygoma of medium size and strength. 

 Suj^erior maxilla of medium size, well formed. Dent.al arches regular; no progna- 

 thism. Bone of lower jaw moderately strong; does not protrude anteriorly; con- 

 formation normal. 



Norma hasalis — Contour almost round. Whole base symmetrical, except as noted 

 below; the middle structures appear shortened autcro-posteriorly, slightlj'more on 

 the left than on the right; basilo-vomeric angle rather acute (lOO*^) ; foramina of the 

 base all spacious; the pctrobasilar suture is large (average diameter, 5 mm.) and is 

 throughout pervious. Superior dental arch regular and of medium thickness. Den- 

 tition incomplete — right upper wisdom tooth not fully erupted; left lower wisdom 

 tooth wanting entirely. Ilenture fine and regular; no teeth decayed. Both upper 

 first incisor.s absent.' Teeth set regularly in socket and of medium size. Palatine 

 arch symmetrical. Shape of palate normal. Posterior nasal foramina oblong. 

 Styloids small, shell-like, flattened. 



A'orma occipitalis — The posterior jiart of the skull is somewhat flattened. The 

 sides of the surface present a pentagonal outline with rounded corners, the apes 

 corresponding to the sagittal suture, or obelion. There is a slight a.symmetry, the 

 right side being somewhat flattened. Exterior occipital protuberance not well 

 marked. 



Xorma reiiicalis — Outline an irregular ovoid, wider posteriorly and more promi- 

 nent on the left and posteriorly. Slight symmetrical depression of the parietals, 

 beginning about 1 cm. and ending .5 or G cm. behind the coronal sutnre and exf ending 

 laterally from the sagittal suture to the upper temporal ridge. 



Xoniia lulcralis — Outline ovoid, larger posteriorly. I'terions en H, of medium 

 breadth. Temporal ridges not very distinct. Parietal bosses prominent. 



cc. 



Skull capacity, Broca's method 1, 545 



Skull capacity. Flower's method 1, 490 



Anteroposterior diameter, maximum 16. 3 



Lateral diameter, maximum 14. 4 



Cephalic index, 88. 3^Brachycephalic.= 



Chin-bregma 21.2 



Chin-ophryon 13. 2 



Alveolar iioint-opbryon 8. 6 



Bizygomatic breadth, maximum 13. 



Facial index 98. 5 



Superior fiicial index (I'roca's), 66.1 = Jlcsoseme. 



Height of nose aperture 5. 4 



Breadth of nose aperture 2. 65 



Nasal index, 49.0=Mesorhine. 



Mean height of orbits 3.80 



Mean breadth of orbits 3. 95 



• Both these incisors were apparently lost at the same time, not from general lesion, and some years 

 previous to the death of the individual, as the sockets appear exactly alike, bear no signs of violence, 

 and are almost tilled li]) with cancellous tissue (some religious or social rite ?). 



2If allowance is made for the etJ'ects of datteuing of the occipital ou tho long diameter, and hence 

 on the indes, of a skull, it becomes apjiarent that the true index of this skull is probably of a low 

 brachycephalic. or, at most, of mesocephalic order. It is very doubtful if the deformity is intentional; 

 its moderate extent and the total hack of signs of counter-compression would indicate with more jtrob- 

 ability tliat the deformity might liave been i>ro(iuce<l by tho individual Ijing, when an infant, by 

 coiupulaiou or habit, ou something hard, probably a board. 



