Anthropoid Apes. 

a) Chimpanzee. 
Troglodytes niger. 
: ae d) Siamang. 
b) Orang-utan, c) White-handed Gibbon. Hylobates syndactylus 
d : vlobates ndactylus 
Simia Satyrus Hylobates Lar. 2 da - 
