55 



mm. 



Parietal arch ; 349 



Occipital arch 195 



Lonpfitiidinal arch 341 



Circumference 357 



Len<i;th of frontal 115 



Len jjth of parietal 126 



Leiiffth of occipi tal 153 



Zyjjomatic diameter 100 



Skull No. 1179 rather delicate ; is deformed in a more regular manner 

 than either of the others above mentioned, and might very well betaken 

 for that of an ancient Peruvian. The frontal does not recede as much 

 as it usually does in Peruvian skulls, owing to their mode of deforma- 

 tion, but in this instance the lower anterior portion of the frontal as- 

 cends very straight, almost perpendicular, and more so than in any of 

 the other skulls. 



Viewed from above, it is broadly heart-shaped, having its greatest 

 breadth about one centimeter above the insertion of the retrahens au- 

 rem in a plane projected perpendicular through the posterior portions 

 of the zygomatic processes. The nasal bones and the alveolar processes 

 of the upper jaw protrude to a considerable extent beyond the general 

 outline of the cranium, while the malars and zygomatic processes stand 

 out but slightly, the former, however, more than the latter. In profile 

 the occipital portion of the skull appears perpendicular within a few 

 degrees; only the left portion of the occipital bone protrudes a little 

 near the superior curved line, which on this side is more developed thau 

 on tlie other. Left zygomatic process slender; the right one defective, 

 partly broken. Nasal bones very projecting, indicating a Eoman nose. 



Facial portion comparatively small ; forehead narrow ; frontal tubers 

 well developed; superciliary ridges but slightly indicated. Malars 

 slender; anterior nasal spine prominent; maxillse very nearly orthog- 

 nathic. Teeth very irregular; left incisors of upper jaw missing ; the 

 first right one very large, while the second is unnaturally small. Ca- 

 nines standing very oblique, their crowns inclined to a considerable 

 extent toward the symphysis. Second right bicuspid temporary ; per- 

 manent one in the act of erui)tion, last molars not yet cut, their position 

 somewhat abnormal. The teeth of the lower jaw are more regular. 

 Both false molars of the left side and second on the right missing, last 

 molar not yet erupted. Mental i)rocess well developed ; exterior oblique 

 line slightly indicated; sigmoid notch flat; ridges for the insertion of 

 the masseter slight ; anterior border of ramus almost straight. 



The base of the skull is nearly triangular, and only slightly asym- 

 metrical. Posterior outline of occipital almost straight, and approach- 

 ing within half a centimeter toward the posterior margin of the fora- 

 men magnum. Muscular insertions highly developed; occipital protu- 

 berance very much elongated. Condyles long and narrow ; their sur- 

 faces quite uneven. Only the right posterior condyloid foramen devel- 

 oped and very wmall ; fossa on this side shallow; the one opposite deep. 



Measurements. 



c. cm. 



Capacity 1380 



mm. 



Length 153 



Breadth 156 



Breadth of frontal 128 



Height 142 



Frontal arch 316 



Parietal arch 370 



Occipital arch 240 



