HRDLICKA] PHYSICAL ANTHROPOLOGY OF THE LENAPE 87 
southern Utah cliff-dwellers it is higher in the males; in the other 
Indians and in the whites it is higher in the females; and the range 
of its groupal as well as individual variation is considerable. As all 
the specimens were measured by the author with the same instru- 
ments, by the same method, and with equal care, the differences can 
not be attributed to error, hence the only reasonable conclusion is 
that even under normal conditions (for these series contain no 
deformed or pathological pelves) the absolute as well as the relative 
dimensions of the superior strait are capable of not a little fluctua- 
tion, attributable, it seems, in some measure at least, to an early 
unequal development of the soft parts both within and without the 
pelvic cavity. 
In order to satisfy himself further on this point, the writer extracted 
a number of the larger series of pelvic measurements from Emmons’s 
data, and from the next table it will be seen that, although they 
relate to females only, the groupal variation is also marked. Yet 
these differences among the Indians rarely if ever fall below what 
may be considered normal limits, or such a limit as would in the 
female still permit of safe childbirth under other normal conditions. 
They are therefore what may be called infunctional or transfynctional 
fluctuations. 
LXXI. FEMALE INDIAN PELVIS: SUPERIOR STRAIT* 
iroup Specimens ate Dismoter Index 
posterior : 
| | 
| cm. cm. 
INontinwesticaastim: Syne) fier) Pe Pe aod) ia) (31) 12. 99 10.7 82.39 
(COMO Se ba Zaahe see ASE SOE a eee seat SES Bee (16) 13. 2 10. 56 80 
STOUR e ee eee ae Oe occ ed ps ene SA es Ss hoe Srcias. (12) 13. 03 10. 98 84. 26 
EROTAME SSC See Seen ice Sere ace oe ee eee (6) 13. 32 10. 93 82.01 
Kentucky..........-. ee ere, Shae Des Hee an) (8) 13.09 10. 66 81. 42 
ING Wee xl COM SEE ek eer ee rt ck So eh (10) 13. 26 10. 43 78. 65 
PATIZONA tase eet ae ame eee Se Sate eee (57) 12. 87 9. 52 74. 01 
IMGxIGOsa ase ene ee a i tras Gent el eter ate es Siren Si (15) 12.7 10. 93 85. 55 
JEDI A Sess Bae es Ae ee De Sas eRe or eee ane a ee (13) 12. 71 10. 12 79. 58 
* EH mmons’s series. 
SHORT AND OTHER BONES 
PATELLA 
The patella, the largest of the sesamoid bones, offers three dimensions 
formeasurements, namely, the maximum height, the maximum breadth, 
and the maximum thickness; and the mean of these diameters, the 
patellar module, is a convenient unit for comparing the size of the bone. 
The 30 patella present in the Munsee collection give proportions 
which are tabulated below. The male bone is perceptibly larger in 
all dimensions than the female. There are but small differences as 
