The Seri Indians. (1898 N 17 / 1895-1896 (pages 1-344*))McGee, W J
History
The Seri Indians. (1898 N 17 / 1895-1896 (pages 1-344*))
McGee, W J
Seri Indians; Seri language; Yuman languages
The occipital region, as a whole, does not protrude much, as in true
dolichocephals, but it shows a prominent broad crest, formed by the two
superior semicircular lines and the region between them. The extreme
occipital protuberance is pronounced and shows signs of strong muscular
attachments. A small distance above the foramen magnum, on each side
of the median line, is a very marked depression, surmounted by a dull
ridge.
Of the mastoids, the right has been broken off and the left is damaged,
but they do not seem to have been of extraordinary size.
The base of the skull is fairly well preserved and shows the following
characters: The basilar process and the petrous portions of the
temporal bones are more massive than usual. The glenoid fossæ are broad
and of fair depth. The styloids are quite diminutive (right 0.7, left
0.5 cm. long). The foramen magnum is hexagonal in outline; it is 4.4
cm. long, 3.4 cm. wide; its plane is inclined backwards in such a way
that its antero-posterior diameter prolonged would touch about the
lower borders of the nasal aperture.
The cranial cavity can be well inspected through the opening caused
by injury. The internal surface of the frontal bone shows but very
few traces of brain impressions. There are several large impressions
on each parietal bone, and deep, though rather small, fossæ for the
extremities of the occipital lobes on the occipital bone. The superior
border of the dorsum sellæ shows in the middle a rounded notch about 3
mm. deep.
The serration of the sutures is throughout very simple.
_Measures_—The glabello-occipital length and maximum width of the
skull can not be accurately determined on account of injuries to
the bones. They amount, respectively, to about 18.8 and 14 cm.,
giving the cephalic index of about 74.4 (moderate dolichocephaly).
The basion-bregma height is 14.1 cm.; basion-vertex, 14.8 cm.;
basion-obelion, 13.0 cm.; basion-lambda, 12.2 cm. The two more anterior
of these measures characterize the skull as a rather high one. The two
more posterior measures show the rapid downward slope of the posterior
half of the sagittal region. The maximum circumference of the skull
(above the ridges) is 52 cm.
The bregma-lambda arc measures 13.3, the lambda-opisthion arc 12.2 cm.
Diameter between the asterions=10.7 cm.
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