36 
THE VOYAGE OF H.M.S. CHALLENGER. 
articulated with each other, and the orbital plates of the frontal and superior maxilla 
were almost in contact. The occurrence of this arrangement in the Roebuck Bay skull 
added another to the ape-like characters of this cranium referred to on p. 32. In the 
Perth skull the orbital surfaces of the two lachrymals were remarkably small, the 
maximum length being 11 mm. and the breadth 6 mm. In three males and one female 
the anterior palatine foramen was unusually large, reaching 5 mm. in its transverse 
Table VI. — Australian — Young Skulls. 
Collection, . 
i 
1 
Murray, 
N. S. W. 
N. S. W. 
No. 2. 
N. S. W. 
Lower 
Murray, 
N. S. W. 
Age, .... 
Aet. 16. 
Aet. 16. 
Aet. 18. 
Aet. 18. 
Sex, .... 
M. 
M. 
F. 
F. (?) 
Cubic capacity, 
1295 
1252 
1066 
1265 
Glabello-occipital length, 
188 
183 
182 
182 
Ophryo-occipital „ 
187 
181 
180 
182 
Basi-bregmatic height, 
128 
129 
133 
131 
Vertical Index, 
68 
70-5 
73 
72 
Minimum frontal diameter, 
98 
90 
98 
91 
Stephanie ,, 
109 
108 
112 
108 
Asterionic ,, 
108 
104 
100 
103 
Greatest breadth, 
129s 
127p 
127p 
131 
Cephalic Index, 
69 
69 
70 
72 
Horizontal circumference, 
520 
504 
502 
501 
Frontal longitudinal arc, 
134 
129 
135 
127 
Parietal „ „ 
133 
120 
141 
130 
Occipital „ „ 
121 
112 
104 
116 
Total . 
388 
361 
380 
373 
Vertical transverse arc, 
281 
283 
289 
283 
Length of foramen magnum, . 
31 
31 
32 
29 
Basi-nasal length, 
95 
102 
95 
100 
Basi-alveolar length, . 
95 
106 
98 
100 
Gnathic Index, 
Interzygomatic breadth, 
100 
104 
103 
100 
120 
118 
117 
Intermalar „ 
108 
106 
109 
104 
Ophryo-alveolar length, . 
72 
80 
77 
78 
Naso-alveolar ,, 
52 
61 
70 
63 
Facial Index, 
60 
68 
67 
Nasal height, 
40 
45 
49 
46 
Nasal width, 
21 
21 
24 
29 
Nasal Index, 
52-5 
47 
49 
63 
Orbital width, 
38 
37 
38 
37 
Orbital height, . ( 
30 
32 
31 
32 
Orbital Index, 
Palato-maxillary length, 
79 
86-5 
82 
86-5 
53 
58 
60 
55 
Palato-maxillary breadth, 
65 
62 
65 
64 
Palato-maxillary Index, 
123 
107 
108 
116 
> 
Symphysial height, . 
28 
28 
28 
Coronoid „ 
53 
53 
52 
Condyloid „ 
46 
51 
45 
u - 
<1> 
£ 
o 
Gonio-symphysial length, 
86 
80 
83 
Intergonial width, 
84 
85 
-3 
Breadth of ascending ramus, . 
• 
38 
34 
29 
