The green monkey (Chlorocebus sabaeus), also known as the sabaeus monkey or the callithrix monkey, is an Old World monkey with golden-green fur and pale hands and feet. The tip of the tail is golden yellow as are the backs of the thighs and cheek whiskers. It does not have a distinguishing band of fur on the brow, like other Chlorocebus species, and males have a pale blue scrotum. Some authorities consider this and all of the members of the genus Chlorocebus to be a single widespread species, Chlorocebus aethiops — confusingly, the name "green monkey" has also been used for this single species.