hrdliCka] skeletal REMAINS OF EARLY MAN 267 



It is brownish and yellowish in color, but has been treated with 

 a preservative. It does not seem to be devoid of animal matter 

 to a great extent, though it may be somewhat mineraliiied. Mor- 

 phologically, beyond the effects of the deformation and the lack of 

 development due to youth, the specimen presents no pecuUar fea- 

 tures. This statement applies equally to every other part of the 

 skeleton. 



The thickness of the bones of the vault is medium, or slightly 

 above, for a child. The sutures show only slight serration and all 

 are patent. There are six unimportant small to medium-sized 

 Wormian bones. The pterions are both of the H variety and of 

 moderate width. 



The mastoids (right) are fairly well developed for a young subject 

 and of ordinary form. The floor of the auditory meatus presents on 

 the left a large, on the right a small, dehiscence; these defects, 

 rather common in all Indians, are of great frequency in those of Bolivia 

 and Peru. 



The frontal process and the upper parts of the orbits show childlike 

 characteristics, otherwise no unusual features. The former is still 

 divided inferiorly for some distance by a remnant of the metopic 

 suture. 



Owing to the deformation of the vault, the foramen magnum 

 appears as if situated farther backward than usual; but this feature 

 is commonly observed in skulls with Aymara deformation. 



Principal measurements of the Siasgo cranium: 



cm. 



Diameter anterior-posterior maximum 16. 9 



Diameter lateral maximum 11.5 



(but was larger; is diminished somewhat by both artificial and posthumous 

 deformation.) 



Height, auditory canals line to bregma, approximately 11. 7. 



Circumierence (above supraorbital ridges) 46. 1 



Nasion-opisthion arc 35. 4 



Nasion-bregma 11. 9 



Bregma-lambda 11. 8 



Lambda-opisthion 11. 7 



Transverse arc 27.1 



Diameter frontal minimum 9. 2 



The remaining parts of the skeleton have been treated for the most 

 part, as has the skull, with a solution of some preservative. Those 

 treated thus are brownish-yellow; those not treated, light-gray. 



Pelvis. — The three constituents of the ossa innominata are as yet 

 entirely separate, and as the rami of the ischium and the pubis com- 

 monly unite about the tenth year, the youth of the subject is evident. 

 The pubic, crest, ischial, and sacral articulation epiphyses are wanting 

 as well as those of the acetabulum and of the border in front and 

 above it. The bones are of fair strength and usual form. 



