On the anatomy of sub-nosed monkey. notes on the arterial arches in the hands of Rhinopithecus roxellanae, R.bieti and R.brellichi, supplement to comparative study with other primates.

The present paper is the first anatomical report about the arterial arches of hands of three different kinds of Snub-nosed monkeys. Altogether we have dissected ten hands. Six of the ten hands possess arcus volaris superficialis while the nest four without this arterial arches. In those without arcus volaris superficialis superficiallis, the radial artery branches oout to supply both sides of digit I,II,III,the radial side of digit IV, and the ulnar artery gives off the branches distributing both sides of digit V and ulnar side of digit IV. Arcus volaris profundus appear in all ten hands.