Jules Verreaux and his brother Edward were 19th-century naturalists, and as it turns out, also quite worldly taxidermists. They traveled the world (spending a lot of time in South Africa) looking for specimens to provide to private collectors as well as museums. During those travels, the Verreaux brothers stuffed and sold animals (as well as a controversial and unfortunate human specimen, a man from Botswana), but they also played a role in introducing new species to those back home in France, from a whale shark off the coast of the Cape of Good Hope to lemurs in Madagascar.
The Verreaux's sifaka is one of those species. The sifaka are lemurs (primates) that look like small monkeys. They live in the treetops on the island of Madagascar (and when they're not in the treetops they hop on their hind legs, using their forearms to keep themselves balanced). Because of deforestation and related issues, the sifaka today are currently endangered.