The Ursine colobus (Colobus vellerosus), also known as the white-thighed colobus, Geoffroy's black-and-white colobus, white-thighed black-and-white colobus, is a species of black-and-white colobus in the Cercopithecidae family. It is found in Benin, Ivory Coast, Ghana, Nigeria, and Togo, as well as very southernmost Burkina Faso. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.