Any arboreal ape of the genus Hylobates
, of which many species and varieties inhabit the East Indies and Southern Asia. They are tailless and without cheek pouches, and have very long arms, adapted for climbing.
" The white-handed gibbon (Hylobates lar), the crowned (H. pilatus), the wou-wou or singing gibbon (H. agilis), the siamang, and the hoolock. are the most common species."