In making his examination, Dr Hrdlička compared the unquestionably
authentic cranium of the entire skeleton with two skulls preserved in
the American Museum of Natural History, viz., No. 99/84, designated as
a skull of a Tiburon mound-builder, and No. 99/85, labeled as having
been found in a shell mound at Tiburon, California; but, in view of the
possible error in identification in these cases, the comparisons are
omitted. Otherwise, Dr Hrdlička’s determinations are as recorded in the
following report (and his drawings of the anterior and left lateral
aspects of the cranium are reproduced in figure 6):
[Illustration: FIG. 6—Anterior and left lateral aspects of Seri
cranium.]