The De Loys is named after a Swiss geologist named Francois de Loys after he and a handful of fellow travellers sighted and shot one along the River Tarra, naer the Venezuelan/Colombian border. Loys and his fellow travellers saw two tall monkeys walking upright and in their direction. The two monkeys shouted at the travellers and tore off branches from the bushed and waved them in the air. Loys and his men aimed their rifles at the male, being the most threatening, but the female stepped forward and was killed instead. The male immediately fled into the brush, leaving its dead companion. Loys and his crew sat the creature up on a petrol crate and proped its head up with a stick to photograph their trophy. Loys kept its skull, but it was turned into a salt-box by the expedition's cook and t