------------------------+--------------+--------------
| 7 males | 12 females
+-----+--------+-----+--------
|Cases|Per cent|Cases|Per cent
------------------------+-----+--------+-----+--------
Medium (about as average| | | |
in whites) | 2 | 29 | — | —
Submedium | 3 | 43 | 7 | 58
None or almost none | 2 | 29 | 5 | 42
------------------------+-----+--------+-----+--------
_Pterygo-basal foramina. Posterior condylic foramina._—Interesting
features of the base of the skull, to which Gruber and (in this
country) Harrison Allen have called attention, are the foramina found
occasionally at the base (or proximal part) of the external pterygoid
plates. These foramina are seldom complete. They may be single, double,
or even triple. They are formed by a process or by processes of bone
which proceed upward and backward, and in some cases more or less
outward, from the border of the external pterygoid plate. According
to the insertion of these processes, the foramina to which they
give rise can be divided into two classes, namely, the more frequent
pterygo-spinous and the rarer pterygo-sphenoidal.
Their significance is not yet so clearly understood as is desirable.
They are of some anthropological interest and occur quite frequently
among Indians, especially in certain localities. Among the Munsee they
were rather scarce, particularly in the females.
XXXVII. MUNSEE CRANIA: PTERYGO-BASAL FORAMINA;
POSTERIOR CONDYLIC FORAMINA
------------------------+----------+----------
| 7 males |12 females
+-----+----+-----+----
|Cases|Per |Cases|Per
| |cent| |cent
------------------------+-----+----+-----+----
None or only a trace | 3 | 43 | 11 | 92
Pterygo-spinous complete| | | |
on left, four-fifths | | | |
on right | 1 | 14 | — | —
Pterygo-spinous | | | |
incomplete, both sides | 1 | 14 | 1 | 8
Incomplete | | | |
pterygo-sphenoidal, | | | |
left side | 1 | 14 | — | —
Complete | | | |
pterygo-sphenoidal on | | | |
left (absent on right) | 1 | 14 | — | —
------------------------+----------+----------
| 5 males |12 females
+-----+----+-----+----
|Cases|Per |Cases|Per
| |cent| |cent
------------------------+-----+----+-----+----
Two, normal | 3 | 60 | 12 | 100
Left absent | 1 | 20 | — | —
| | | |
Right, | | | |
diminutive | 1 | 20 | — | —
+-----------------------+-----+----+-----+----
_Posterior condylic foramina._—These are canals which transmit the
posterior condylic vein and are of interest only because of their more
or less frequent absence from one or both sides in different racial
groups. In the Munsee they are exceptionally normal, as will be seen
from the preceding figures.