206 REVISTA CHILENA DE HISTORIA NATURAL 
AAA NA eee 
PARTICULAR DESCRIPTION OF THE SKELETONS. | 
Skull A. | | 
This skull is of medium capacity, (mesocephalic) 1450 e. e. It _ 
is also mesozygus, mesognathous and mesaticephalic. Compar- 
ed with the others of the series it Would seem to denote a cross 
with a race having different characteristics. 
_ The sutures are open and simple; there is a small wormian 
bone in the lambdoidal suture near the right asterion. 
The frontal is well developed though the forehead is narrow 
in the superorbital region. The glabella and the superciliary 
ridges are not notiable, forming one smooth contour, but the 
frontal eminences are prominent, giving a high appearance to 
the forehead. The general aspect of the face is one of featness, 
and presents characteristics that have not before come under my 
notice. The nasal notch is completely wanting, a fact which 
probably accounts for the high naso-malac index. Fhe nasal 
bones continue in a line with the forehead, while the bidaerye 
breadth is only 18 mm; the dacryons being only slightly behind 
the external surface of the by-nasal suture. This makes the 
outer edges of the orbits appear to recede,and this gives an internal 
bi-orbital are of 98 mm while the chord is only 88 mm; infusing 
a prosopic element (111.3) to what is essentially a platyopic face. 
The orbits themselves are rectangular and mesoseme; the 
supra-orbital notches pronouced; as is the case with all the fora- 
mina. 
The maxillaries are short, broad, and remarkable for the very 
slight concavities below the malars. This helps to give the face 
its appearance of flatness. The apertura pyriformis is extremely 
narrow and the nose highly leptorhine (89.2)!! The distance 
from the nasal spine to the alveolar process is very short, the 
palate is parabolic, whith a staphylinic index of 95.8. This 
again is a point which has not before come under my notice es- 
pecially in Chilian skulls, whether Indian or otherwise. The 
internal palatine breadth; 46 mm; is much above the average 
while the internal length 48 mm is less than customary. 
The teeth, which are all present, are worn down in a remark- 
able way; far more so than thave I have ever seen before, even 
among the lowest savages (Fuegians and Ocas). In this skull 
in especial, they barely protrude—incisors, canines, and molars 
alike—four milimeters (plur) from the alveolar processes, and are 
quite separate ¿nter se; the spaces between the molars being about 
1mm, and between the incisors about 2 mm. The superior 
molars (plur) especially are worn to asharp exterior edge, being 
for the most part in a healthy condition, but in a few intances 
carious. : aie 
