Kathleen V. Ryley and Julia Bell 
in the Gibbons, Hylobates and Symphalangus. 
445 
Simotic 
Index 
16-4 
7-0 
12-1 
37 
-1-7 
1-9 
4-7 
1-8 
4-0 
13 3 
9-6 
15-3 
106 
Locus 
Natural History Museum 
Royal College of Surgeons 
Natural History Museum 
Remarks 
Hylobates syndactylies. From Pahang. Sutures obliterated 
From Sumatra. Very young 
Symphalangus. From Sumatra. Young adult 
Symphalangus. From Sumatra. Asymmetric lacrymal bones 
Symphalangus syndactylus. From Sumatra. Old. Sutures 
vague 
Symphalangus syndactylus. Sutures vague. Nasals absent 
at the bridge 
Symphalangus syndactylus. From Pahang. Very old. Sutures 
quite obliterated 
Old. Sutures obliterated 
Old. Sutures rather vague 
Symphalangus. 
Symphalangus. 
Hylobates sp. 
Hylobates sp. 
Hylobates lar. 
Hylobates sp. 
Hylobates sp. 
Hylobates sp. 
Young 
Adult 
Old. Sutures vague, nasal sutures obliterated 
Young 
Very young [rated 
Hylobates leuciscus from Malacca. Very old. Sutures oblite- 
Hylobates hainauus from Hainan. Young. Peculiar lacry- 
mal bones [rated 
Sutures quite oblite- 
i\ sutures vague 
Hylobates gabriella from Annam. Old 
Hylobates mulleri from N. Borneo. Ni 
Hylobates agilis 
Hylobates agilis from Sumatra. Sutures obliterated 
Hylobates leuciscus from Java. Sutures obliterated 
Hylobates hoolock. Young. Apparently no nasals, but pro- 
cess of frontal 
Hylobates lar. From Malay Peninsula. Sutures obliterated 
Hylobates lar. From Malay Peninsula. Sutures obliterated 
Hylobates leuciscus from Borneo 
Hylobates lar. From Malay Peninsula 
Hylobates lar. From Malacca. Sutures obliterated 
Hylobates sp. Ridge on maxilla. Nasal sutures obliterated 
Hylobates lar. 
Hylobates lar. 
Hylobates lar. 
Hylobates lar. 
Hylobates sp. 
From Malacca. 
From Malacca. 
Young- 
Sutures obliterated 
Very young 
Sutures obliterated 
Nasals broken 
bisected skull 
Biometrika is 
57 
