REPORT ON THE BONES OF THE HUMAN SKELETON. 
17 
pelvic cavity had a mean depth of 79 mm., in the male it was also 79 mm. The mean 
pubo-innominate index of the adult females was 45"5, that of the male was 45. The 
maximum length of the ilium in the adult females was 105 mm., the minimum 93, 
the mean was 100 mm.; in the male the length was 99 mm. The maximum length of 
the ischium in the adult females was 71 mm., the minimum 68, the mean was 70 mm. 
In the adult females the ischium ranged from about two-thirds to three-fourths the length 
of the ilium ; in the male the ischium was nearly two-thirds the length of the ilium. 
The mean ischio-innominate index in the adult females was 43, and this index was also 43 
in the single adult male. In each adult pelvis the breadth of the sacrum exceeded the 
length; the mean sacral index in the adult females was 111, and the same index in the 
adult male was 114. In the young female the index was only 96*5. 
Table IV. — Andaman Islanders. 
Collection, .... 
E.U.A.M 
E.U.A.M. 
E.U.A.M. 
R.C.S. 
Ed. 
E.U.A.M. 
E.U.A.M. 
Sex, ..... 
M. 
F. 
F. 
F. 
y. M. 
Y. F. 
r 1 
L. 
Breadtli of pelvis, 
111 
Zoo 
1 y 0 
IV-i 
2. 
Height of pelvis, 
159 
166 
164 
157 
152 
o 
3. 
Breadth-Hcigltt ImJex, . 
75 
79 
70 
80 
78 
'S3 
4. 
Between ant. sup. iliac spines, . 
189 
218 
180 
176 
o 
_s 
5. 
Between post. sup. iliac spines. 
G8 
76 
81 
67 
70 
59 
6. 
Between ischial tubera. 
113 
129 
139 
135 
120 
117 
7. 
Between ischial spines. 
66 
94 
69 
75 
a 
o 
8. 
Greatest diameter of cotyloid, . 
42i; 
46;; 
47i; 
45« 
44y 
X 
9. 
Vertical diameter of obturator foramen, 
43 
37 
42 
46 
40 
42 
10. 
Transverse diameter of obturator foramen, 
30 
29 
30 
31 
26 
25 
<i 
11. 
Ohturator Index, 
70 
78 
71 
67 
■• -65 
59-5 
12. 
Subpubic angle. 
Transverse diameter of brim, 
68° 
84° 
88° 
81° 
78° 
81° 
to 
" 13. 
102 
106 
117 
109 
90 
94 
'"o 
U. 
Conjugate diameter of brim, 
99 
99 
100 
92 
92 
92 
CO "3 
15. 
Pelvic or Brim Index, . 
97 
93 
85 
84 
102 
98 
.2 o 
t< J 
16. 
Oblique diameter of brim | ^glJ^*^' 
108 
108 
109 
111 
114 
120 
111 
111 
95 
93 
97 
97 
17. 
Inferior sagittal diameter, 
90 
103 
111 
112 
84 
82 
19. 
Intertuberal diameter, . 
77 
104 
105 
104 
85 
89 
22 > 
20. 
Depth of pubic symphysis. 
35 
27 
39 
34 
33 
31 
o 
21. 
Depth of pelvic cavity. 
79 
76 
79 
82 
74 
75 
^22. 
Height-length of ilium. 
99 
101 
105 
93 
90 
23. 
Breadth of ilium, 
124 
123 
130 
125 
113 
24. 
Hiac Index, .... 
125 
122 
124 
134 
125 
O M 
2 PI 
25. 
Breadth of innominate bone, 
143 
147 
154 
134 
s ° 
2G. 
Length of os pubis, 
64 
70 
67 
62 
59 
58 
9 <^ < 
27. 
P'aho-innominate Index, 
45 
48 
43 
U 
a -2 
'^'■^ 
28. 
Length of ischium, 
69 
71 
68 
71 
68 
66 
29. 
Innominate Index, 
90 
89 
93 
88 
30. 
Ischio-innominate Index, 
43 
43 
41 
45 
45 
31. 
Length of sacrum. 
84 
87 
102 
87 
87 
87 
32. 
Breadth of sacrum. 
96 
100 
114 
93 
92 
84 
33. 
Sacral Index, .... 
lU 
115 
112 
107 
106 
90-5 
(ZOOL. CHALL. EXP. — PART XLVII. — 1886.) 
Aaa 3 
